| LSIS CO., LTD. Patent applications |
| Patent application number | Title | Published |
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| 20160142007 | PHOTOVOLTAIC INVERTER - The present invention relates to a photovoltaic inverter capable of reducing a leakage current and a switching loss by changing a pulse width modulation (PWM) method and a configuration of an output filter. To this end, the photovoltaic inverter includes a direct-current (DC) link capacitor connected in parallel to a photovoltaic module, a switch unit including first to fourth switches and operating by a half unipolar switching method, and a reactor having one end connected to another end of the first switch and one end of the second switch, and another end connected to a grid, the reactor having a predetermined inductance. | 05-19-2016 |
| 20160141912 | SYSTEM FOR WATER SUPPLY USING SUNLIGHT - The claimed water supply system using sunlight has a technical effect of improving the energy efficiency by having a saving unit storing current that was generated by solar cells but was left over after running a motor so as to use the stored current later. | 05-19-2016 |
| 20160134219 | APPARATUS FOR CONTROLLING INVERTER - An inverter controller is provided. The controller according to an exemplary embodiment of the present disclosure generates a compensation voltage to compensate an inverter command voltage using motor torque current and motor information, and apply the compensation voltage to the command voltage. | 05-12-2016 |
| 20160126823 | MULTIPLE-TUNED FILTER DESIGN METHOD FOR HVDC SYSTEM - A method of designing a multiple-tuned filter (MTF) of a high voltage direct current (HVDC) system is provided. The method includes selecting an input parameter for the MTF, setting a resonance frequency of the MTF, calculating values of inductance (L) and capacitance (C) which are filter parameters of the MTF on the basis of the input parameter and the resonance frequency, combining a value of resistance (R) with the filter parameters and calculating a price according to the combination, and storing the combined values of R, L, and C when the calculated price falls within a predetermined price range. | 05-05-2016 |
| 20160126042 | CROSSBAR STRUCTURE OF ELECTROMAGNETIC CONTACTOR - Disclosed are a crossbar structure of an electromagnetic contactor, and more particularly, a crossbar structure of an electromagnetic contactor in which consistent performance is made by preventing a moving mount from being flipped. In the crossbar structure of the electromagnetic contactor, the electromagnetic contactor includes a crossbar configured to move up and down and a moving contact point disposed on an installation groove, which is formed on the crossbar in a vertical direction, and brought in contact with or separated from a fixed contact point. In this case, the installation groove includes an insertion part into which the moving contact point is inserted and assemblable and an operating part closely formed enough to prevent the moving contact point from being flipped when the moving contact point moves up and down. | 05-05-2016 |
| 20160126041 | TRIPPING DEVICE OF CIRCUIT BREAKER - A tripping device of a circuit breaker of the present disclosure may reinforce a magnetic force on a main magnetic flux path using a plurality of magnetic force reinforcing plates without using an additional plate yoke on an actuator provided in the circuit breaker to miniaturize the size of the actuator, thereby having an effect of allowing a control circuit unit provided at an outer portion of the circuit breaker to be installed at an inner portion of the circuit breaker to miniaturize the whole size of the circuit breaker. | 05-05-2016 |
| 20160126036 | INTERLOCK APPARATUS OF VACUUM CIRCUIT BREAKER - There is provided an interlock apparatus of a vacuum circuit breaker for adjusting withdrawal of a circuit breaker main body, which is installed in a truck and moves to a connected position in which the circuit breaker main body is connected to a cradle and moves to a disconnected position in which the circuit breaker main body is separated from the cradle within the cradle, to outside of the cradle, includes: a lift including a rotation adjusting plate provided on an upper portion thereof, and moving forwardly and backwardly such that the rotation adjusting plate is inserted into the interior of the cradle or separated from the cradle; and an interlock plate provided within the cradle and rotating according to movement of the rotation adjusting plate so as to be tightly attached to the truck or released from the tightly attached state to thereby adjust withdrawal of the circuit breaker main body to the outside of the cradle. | 05-05-2016 |
| 20160126028 | DOOR INTERLOCK DEVICE FOR VACUUM CIRCUIT BREAKER - The present invention relates to a door interlock device for a vacuum circuit breaker, and more particularly, a door interlock device for a vacuum circuit breaker, which is operable in cooperation with an operation of a cradle shutter. A door interlock device for a vacuum circuit breaker according to one embodiment disclosed herein includes a pressing unit that is provided on one end portion of a shutter lever driving a terminal shutter of a cradle, a driving force transfer unit that is rotatably or slidably installed on a cradle side frame, the driving force transfer unit performing a rotary motion or a sliding motion by a force applied from the pressing unit, and a sliding member that is configured to lock or unlock a door lock plate in response to a driving force transferred from the driving force transfer unit. | 05-05-2016 |
| 20160124414 | PLC SYSTEM - A programmable logic controller (PLC) system is provided. The programmable logic controller (PLC) system includes a storage unit storing a user program; a main control unit performing a scan operation based on the user program, measuring a scan time required for the scan time, and determining whether there is a need to process a web based service; and a web based service control unit processing the service data based on the scan time service request details, and service data that are transmitted from the main control unit, according to a result of the determination on whether there is a need to process the web based service. | 05-05-2016 |
| 20160124413 | PLC SYSTEM AND OPERATING METHOD THEREOF - A programmable logic controller (PLC) system is provided. The programmable logic controller (PLC) system divides a memory region into a plurality of regions according to a function, and reads or transmits data from or to the divided regions according to an operation mode to be performed, wherein the plurality of regions obtained through division includes: a first storage region storing log data on the PLC system; and a second storage region storing a hyper text markup language (HTML) file. | 05-05-2016 |
| 20160118208 | SUPPORTING STRUCTURE OF CLOSING RESISTOR FOR HIGH VOLTAGE CIRCUIT BREAKER - The present invention relates to a supporting structure of a closing resistor for a high voltage circuit breaker, capable of stably supporting the closing resistor not to be twisted even by an impact applied upon a closing operation. A supporting structure of a closing resistor for a high voltage circuit breaker according to one embodiment includes a fixed part main circuit conductor, a supporting conductor installed on an upper surface of the fixed part main circuit conductor, a connecting conductor connected to one end of the supporting conductor, a closing resistor unit coupled to one side of the fixed part main circuit conductor in a spaced manner, and a coupling conductor provided to couple the supporting conductor to the closing resistor unit. The supporting conductor and the connecting conductor are provided with a coupling rib and a coupling groove, respectively, to be coupled to each other in an inserting manner. | 04-28-2016 |
| 20160111974 | SINGLE-PHASE PHOTOVOLTAIC INVERTER - Disclosed are a single-phase photovoltaic inverter and a control method thereof in which a small insulated transformer and an ordinary current transformer are used to measure a leakage current instead of a high-priced current transformer that is only used to measure a leakage current. The single-phase photovoltaic inverter that converts DC electric power supplied from a single-phase photovoltaic module into AC electric power includes an input terminal including a first input terminal connecting to a positive polarity of the single-phase photovoltaic module and a second input terminal connecting to a negative polarity of the single-phase photovoltaic module, an inverter unit configured to convert DC electric power supplied through the input terminal into AC electric power and supply the converted AC electric power to a grid, and a leakage current measuring unit connected in parallel with the inverter unit and configured to measure a leakage current delivered through the input terminal. | 04-21-2016 |
| 20160111953 | APPARATUS AND METHOD FOR RESTARTING MEDIUM VOLTAGE INVERTER - An apparatus for restarting a medium voltage inverter is disclosed, wherein the medium voltage inverter can be restarted by estimating a rotor speed when an input power returns from an instantaneous defective state to a normal state, whereby a time to restart the medium voltage inverter can be reduced by a simple configuration to dispense with the need to wait until the rotor speed reaches zero speed. | 04-21-2016 |
| 20160111952 | METHOD OF CONTROLLING INVERTER - According to an embodiment, a method of controlling an inverter including a rectification unit rectifying inputted AC power to DC power, a smoothing unit smoothing the DC power, and a power conversion unit received the DC power from the smoothing unit to convert the received DC power into AC power having a predetermined size and frequency, the method includes receiving an abnormal signal of the inverter or an electric motor for driving the inverter, determining whether a DC terminal voltage of the smoothing unit is equal to or greater than a low voltage failure level when the abnormal signal is received, determining whether the power conversion unit is operating, and blocking current output of the power conversion unit when the DC terminal voltage is equal to or greater than the low voltage failure level and the power conversion unit is operating. | 04-21-2016 |
| 20160111882 | GRID-TIED PHOTOVOLTAIC POWER GENERATION SYSTEM - The present disclosure relates to a grid-tied photovoltaic power generation system, and particularly, to a grid-tied photovoltaic power generation system including a power maintaining unit configured to maintain power of a controller during an corresponding operation time of a photovoltaic system when power supply is stopped due to a fault generated in a grid, whereby power may be stably supplied to the controller and power of the controller may be maintained, designing of the photovoltaic system and setting of a connection to the grid may be simply and easily performed, a corresponding operation of the photovoltaic system may be controlled regarding the fault generated in the grid, and the fault generated in the grid may be accurately, appropriately, and effectively handled. | 04-21-2016 |
| 20160110245 | METHOD FOR SAVING FAULT WAVE DATA - There is provided a method for saving fault wave data, in which when a fault wave generated in a system is saved, a size of wave data is calculated, and the saving of the wave data is performed according to the size of the wave data, so that it is possible to implement the use of spaces of a buffer and a memory and the simultaneous saving of wave data simultaneously or subsequently generated. Accordingly, it is possible to minimize a delay in the saving of the wave data. Also, it is possible to record all accurate wave data even when consecutive faults occur. Also, it is possible to efficiently use the space of the memory. | 04-21-2016 |
| 20160103452 | SYSTEM AND METHOD FOR MANAGING WATER IN WATER PIPE NETWORK - A system for managing water in a water pipe network is disclosed. The system draws an optimal pump operation schedule and a result of hydraulic analysis, by performing an integrated simulation of hydraulic analysis and optimization based on the hydraulic analysis data for optimization calculation and demand amount data generated using an optimization setting parameter and history data. | 04-14-2016 |
| 20160103440 | METHOD FOR TRANSMITTING AND RECEIVING DATA BETWEEN MPU AND MEMORY IN PLC - A method for transmitting and receiving data between an MPU and a memory operating in mutually different operating voltages in PLC is proposed, the method including: outputting, by the MPU, a CS (Chip Select) signal and an address signal in order to read data by approaching to the memory; outputting, by an OR gate, an activation signal for activating a data input buffer by receiving the CS signal and the address signal; outputting, by an access signal output buffer, a memory access signal for operation of the memory by receiving the CS signal and the address signal; outputting, by the memory, data requested by the MPU to the data input buffer by responding to the memory access signal; and outputting, by the data input buffer, the received data to the MPU by receiving the data outputted by the memory. | 04-14-2016 |
| 20160100039 | PROTOCOL CONVERTER - The disclosure relates to a protocol converter that converts between a Modbus protocol and an ECHONET Lite protocol to enable communication between a device performing communication based on a Modbus protocol and a device performing communication based on an ECHONET Lite protocol. The protocol converter according to the disclosure comprises a first communicator connected to a first device that performs communication in a first protocol, a second communicator connected to a second device that performs communication in a second protocol, and a controller that converts the first protocol and the second protocol with each other to control communication between the first device and the second device. | 04-07-2016 |
| 20160099652 | HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM - A high voltage direct current (HVDC) transmission system is provided. The high voltage direct current (HVDC) transmission system includes: a first power transceiving part consuming power generated by a power generation part, storing the generated power, and outputting the generated power or stored power to a second power transceiving part; a second power transceiving part consuming power generated by a power generation part, storing the generated power and outputting the generated power or stored power to the first power transceiving part; and a control part controlling the power transmission and reception of the first power transceiving part and the second power transceiving part. | 04-07-2016 |
| 20160098218 | PLC DATA LOG MODULE WITH BACKUP FUNCTION - A PLC data log module with backup function is proposed, the module including an internal memory configured to store the log data and to transmit the stored log data to the external memory, a backup memory configured to back-up the log data transmitted from the internal memory to the external memory and to store the backup data, and a controller configured to transmit the backup data stored in the backup memory to the external memory by controlling the backup memory when the PLC is turned off or reset. | 04-07-2016 |
| 20160093459 | AUXILIARY CONTACT MECHANISM OF ELECTROMAGNETIC CONTACTOR - The present invention relates to an auxiliary contact mechanism of an electromagnetic contactor, and more particularly, to an auxiliary contact mechanism of an electromagnetic contactor capable of maximizing a time duration for which power is supplied to a magnetic coil for switching a main contact until the main contact is closed. The auxiliary contact mechanism of an electromagnetic contactor, includes: a case formed to have a box shape; an auxiliary sliding member installed above the case, and moving up and down by receiving a pressure from a main contact sliding member; an elastic member accommodated in an insertion groove formed in the auxiliary sliding member; a pressing member insertion-installed below the auxiliary sliding member, and moving up and down by an elastic force of the elastic member; and a micro switch turned on/off by the pressing member. | 03-31-2016 |
| 20160093458 | DIRECT CURRENT RELAY - The present invention relates to a direct current relay, and more particularly, to a direct current relay capable of reducing an electronic repulsive force generated between a fixed contact and a movable contact by a permanent magnet installed to extinguish an arc. The direct current relay includes: a frame; first and second fixed contacts spaced from each other with a predetermined distance there between; first and second magnetic substances formed to enclose a lower part of the first and second fixed contacts; a movable contact movable to contact or to be separated from the first and second fixed contacts, having a first movable contact contactable to the first fixed contact, and having a second movable contact contactable to the second fixed contact; and a pair of permanent magnets installed on long sides of the frame. | 03-31-2016 |
| 20160093457 | ACTUATOR FOR CIRCUIT BREAKER AND METHOD FOR MANUFACTURING THE SAME - The present disclosure may fix the second yoke without using an upper cover and a lower cover, thereby having an effect of simplifying the entire structure, and reducing the fabrication cost, and decreasing the fabrication time. | 03-31-2016 |
| 20160087475 | CONTROL DEVICE OF ENERGY STORAGE SYSTEM - A control device of an energy storage system is provided. The control device includes a voltage calculation unit calculating the difference between a reference voltage and a measured voltage; frequency calculation unit calculating the difference between a reference frequency and a measured frequency; a power reserve margin (PRM) calculating a ratio of reserve power to the maximum consumption of power; and a power calculation unit using, as input values, coefficients calculated at the voltage calculation unit, the frequency calculation unit and the PRM calculation unit, and calculating a switch control value of an energy storage system by further using a difference in reactive power and active power. | 03-24-2016 |
| 20160087371 | ELECTRIC CONNECTOR - Provided is an electric connector for connecting electric equipment to a power device. The electric connector includes a connector body defining an outer appearance thereof, a connection bar disposed on the connector body to electrically the connect electric equipment to the power device, an insertion part disposed on the connector body, the insertion part being inserted into the electric equipment, and a sealing disposed on a shaft of the insertion part in a circumferential direction. | 03-24-2016 |
| 20160082853 | CABLE INSTALLMENT TYPE CHARGING CONTROL DEVICE AND METHOD OF OPERATING THE SAME - Provided is a plug of a grid-side power cable assembly connected to a cable installment type charging control device for charging an electric vehicle (EV) by using power of a grid-side. An exclusive socket detecting part detects whether a socket connected to the plug is an exclusive socket for the plug. A normal operation signal generating part generates a signal notifying whether the exclusive socket is detected. A voltage dividing part outputs a voltage so that an output voltage in a case in which the grid-side assembly is short-circuited is different from that of the grid-side power cable assembly in a case in which the signal is generated. | 03-24-2016 |
| 20160082852 | CABLE INSTALLMENT TYPE CHARGING CONTROL DEVICE AND METHOD OF OPERATING THE SAME - Provided is a plug of a grid-side power cable assembly connected to a cable installment type charging control device for charging an electric vehicle (EV) by using power of a grid-side. An exclusive socket detecting part detects whether a socket connected to the plug is an exclusive socket for the plug. A normal operation signal generating part generates a signal notifying whether the exclusive socket is detected. A voltage dividing part outputs a voltage so that an output voltage in a case in which the grid-side assembly is short-circuited is different from that of the grid-side power cable assembly in a case in which the signal is generated. | 03-24-2016 |
| 20160079022 | ELECTRIC VEHICLE RELAY - An electric vehicle relay includes: a pair of fixed electrodes; a movable electrode movable to contact or to be separated from the fixed electrode; a driving shaft which performs a vertical motion as an upper end thereof is coupled to the movable electrode; a fixed core fitted into a central part of the driving shaft with a gap; a movable core coupled to a lower end of the driving shaft and sucked by a magnetic force of the fixed core; and a cylinder configured to insertion-support the fixed core and the movable core, wherein locking protrusions are formed on an outer circumferential surface of the movable core, wherein inclined grooves for inserting the locking protrusions are formed on an inner circumferential surface of the cylinder, and wherein the movable electrode is rotated as the locking protrusions are moved along the inclined grooves when the movable core performs an up-down motion. | 03-17-2016 |
| 20160077510 | SYSTEM FOR PREDICTING ABNORMALITY OCCURRENCE USING PLC LOG DATA - The present disclosure relates to a system for predicting abnormality occurrence using a PLC log data, the system including a controller configured to receive a data from a lower-level device connected to a PLC data log module and determine the data, and to store the data in an event storage when the data is a data related to abnormality occurrence, an analyzer configured to generate an abnormality analysis result by analyzing the data related to abnormality occurrence, and an analysis result storage configured to store the abnormality analysis result, wherein the controller compares the data transmitted from the lower-level device with the abnormality analysis result stored in the analysis result storage, and generates an abnormality occurrence prediction signal, when it is determined that the data transmitted from the lower-level device is similar to the abnormality analysis result. | 03-17-2016 |
| 20160075357 | AUTOMATIC TRAIN OPERATION SYSTEM IN RAILWAY VEHICLES - The present disclosure relates to an automatic train operation system in railway vehicles, the system including: a speed profile generation unit configured to generate speed profile information based on limited speed profile inputted from outside; a track database stored with track gradient information and track curvature information for each track segment; a train speed controller configured to control a speed of the train using a current position, a current speed and the speed profile information of the train inputted from outside; and a propulsion system fault diagnosis unit configured to diagnose a fault status of the propulsion system based on the current speed of the train, the track gradient information, the track curvature information and propulsion notch information inputted from the train speed controller, and to calculate a performance depreciation ratio when the propulsion system is faulted and to provide the performance depreciation ratio to the train speed controller. | 03-17-2016 |
| 20160075354 | APPARATUS FOR WARNING OF EXCEEDING SPEED LIMIT IN RAILWAY VEHICLES - The present disclosure relates to an apparatus for warning of exceeding speed limit in railway vehicles, wherein a train speed is estimated after a predetermined time, a remaining time is calculated until a train reaches a speed limit based on the estimated speed, and when the calculated time is smaller than a preset reference value, a warning signal is generated. Thus, an adequate warning can be given to cater to a train operation situation because a TTSLC indicator is used that notifies when an emergency braking will be activated by exceeding a set speed limit value after a certain time lapses, resultantly increasing the train operation frequency and the availability of trains. | 03-17-2016 |
| 20160075251 | ELECTRIC VEHICLE CHARGING APPARATUS - An charging device is provided. The charging device includes: a plurality of main relays forming a connection between an electric vehicle (EV)-side connector and an outlet-side connector; a relay welding sensing unit connected to the plurality of relays to sense the presence or absence of welding of the plurality of relays; a welding monitoring relay opening and closing between the relay welding sensing unit side node and a main relay side node; and a control unit controlling the open and close of the welding monitoring relay. | 03-17-2016 |
| 20160075244 | ELECTRIC VEHICLE CHARGING APPARATUS - A charging apparatus is provided. The charging apparatus includes a plug supplying electrical energy to an electric vehicle (EV) through a plurality of plug pins; a plurality of temperature sensors disposed in the plug and measuring the temperatures of the plurality of plug pins; and a control unit determining the presence or absence of the overheating of the plug based on the temperatures measured from the plurality of temperature sensors. | 03-17-2016 |
| 20160061897 | SYSTEM FOR ANALYSIS OF PARTIAL DISCHARGE DEFECTS OF GAS INSULATED SWITCHGEAR - The present invention relates to a system for analysis of partial discharge defects of a gas insulated switchgear capable of allowing a user to precisely analyze a defect of a gas insulated switchgear due to a partial discharge, by providing both partial discharge signal information on a partial discharge signal sensed by a detecting sensor, and detection signal information on a detection signal sensed by one or more neighboring sensors adjacent to the detecting sensor, to a monitor. | 03-03-2016 |
| 20160059731 | VEHICLE CHARGING DEVICE AND METHOD - A vehicle charging device includes a grid plug connected to an external power source for providing power for vehicle charging, a grid cable connected to the grid plug, a charging circuit interrupt device (CCID) detachably connected to the grid cable and including a relay circuit for a control of the vehicle charging, a coupler connected to the vehicle, a coupler cable connecting the coupler and the CCID, wherein the CCID determines a type of the grid cable from a connected pin when connected to the grid cable. | 03-03-2016 |
| 20160059724 | VEHICLE CHARGING DEVICE AND METHOD - A vehicle charging device is provided. The vehicle charging device includes a power input unit receiving power supplied from an external power supply source, a relay unit delivering the power received through the power input unit to a vehicle, a pilot circuit controlling an operation of the relay unit and generating a pilot signal for controlling vehicle charging, wherein the pilot circuit sequentially performs a first operation for leading a stop of the vehicle charging by changing a duty ratio of a pulse width modulation (PWM) signal corresponding to the pilot signal and a second operation for allowing the power not to be delivered to the vehicle by opening the relay unit when the stop of the vehicle charging is not performed by the first operation. | 03-03-2016 |
| 20160059719 | VEHICLE CHARGING DEVICE AND METHOD - A vehicle charging device is provided. The vehicle charging device includes a grid plug connected to an external power source for providing power for vehicle charging, a grid cable connected to the grid plug, a charging circuit interrupt device (CCID) connected to the grid cable and including a relay circuit for a vehicle charging control, a coupler connected to the vehicle and a coupler cable connecting the coupler and the CCID, wherein the grid plug includes first and second terminals electrically connected to the external power source and first and second temperature sensors disposed at positions separated by a predetermined distance from the first and second terminals, and the first and second temperature sensors are commonly connected to a ground line earthed. | 03-03-2016 |
| 20160059712 | BATTERY PACK AND HYBRID VEHICLE INCLUDING THE BATTERY PACK - A battery pack includes a main battery including a plurality of battery cells, a power conversion unit configured to change a level of a voltage output from the main battery, a main relay unit disposed between the main battery and the power conversion unit, the main relay unit switching a connection between the main battery and the power conversion unit, and a control unit configured to monitor a state of the main battery and control operation of the power conversion unit, wherein the control unit includes units for measuring voltage, current and temperature values of the main battery and a unit for outputting a gate signal for controlling the operation of the power conversion unit. | 03-03-2016 |
| 20160049273 | ELECTROMAGNETIC CONTACTOR - An electromagnetic contactor includes: a lower frame having an accommodation space therein; a bobbin having a fixed core, and accommodated in the lower frame; a movable core inserted into the bobbin so as to be moveable up and down; a spring installed between the bobbin and the movable core, and configured to provide an upward restoration force to the movable core; and a ‘b’ contact switch installed at one side of the bobbin, wherein a button for operating a switch lever of the ‘b’ contact switch is provided at a movable core plate positioned above the movable core. | 02-18-2016 |
| 20160042895 | SUPPORTING STRUCTURE OF CLOSING RESISTOR UNIT FOR CIRCUIT BREAKER - Disclosed is a supporting structure of a closing resistor unit for a circuit breaker which connects the closing resistor unit to the fixed portion through the first supporting plate and the second supporting plate to allow the closing resistor unit to move back and forth with respect to the fixed portion through the first supporting plate and to move up and down with respect to the fixed portion through the second supporting plate, whereby the closing resistor unit or its joints may be prevented from being damaged from impact. | 02-11-2016 |
| 20160041566 | APPARATUS AND METHOD FOR CONTROLLING TEMPERATURE - A temperature control apparatus is provided. The temperature control apparatus includes an analog to digital (AD) converter digital-converting a measurement value transmitted from a plurality of temperature sensors; a control means comparing the measurement value transmitted from the AD converter with a preset desired value to perform PID calculation; and an output unit transmitting, to outside, a pulse width modulation (PWM) control signal transmitted form the control means, wherein an input-side isolator for isolation for each temperature sensor is provided between the AD converter and the temperature sensor, the input-side isolator is connected to each of the temperature sensors, and the control means sequentially operates the input-side isolators. | 02-11-2016 |
| 20160041217 | ON-LINE STATUS DIAGNOSIS DEVICE AND ON-LINE STATUS DIAGNOSIS METHOD FOR ELECTRIC POWER UTILITIES - The present invention is to provide an on-line status diagnosis device for an electric power utilities, in which sampling and data transmission rates are differentiated according to a degree of risk of degradation status data. The on-line status diagnosis device includes a sensor for providing a degradation detection signal of the electric power utilities, a data acquisition unit (DAU) for acquiring and providing degradation detection data, and a communication unit for transmitting the degradation detection data to the outside. The DAU includes an analog-digital converter for acquiring degradation detection data as digital data by converting the degradation detection signal from the sensor into a digital signal, and a microcomputer for determining a degree of risk by comparing the degradation detection data with at least one predetermined risk determination reference value, and outputting a control signal to the analog-digital converter to change a sampling rate and a report rate. | 02-11-2016 |
| 20160028300 | INVERTER ASSEMBLY WITHOUT GALVANIC ISOLATION - Disclosed is an inverter assembly without galvanic isolation, the inverter assembly including a PCB mounted with a power supply circuit unit, an inverter unit, an analogue circuit unit and a controller, a first ground circuit pattern to supply a ground power to the power supply circuit unit and the inverter unit, a second ground circuit pattern to supply the ground power to the analogue circuit unit, a third ground circuit pattern to supply the ground power to the controller, a first bead between the first ground circuit pattern and the second ground circuit pattern to isolate an impedance between the first ground circuit pattern and the second ground circuit pattern, and a second bead between the second ground circuit pattern and the third ground circuit pattern to isolate an impedance between the second ground circuit pattern and the third ground circuit pattern. | 01-28-2016 |
| 20160018457 | FAULT CURRENT DETECTING CIRCUIT - A fault current detection circuit according to the invention comprises a primary current transformer that detects a current; a pair of secondary current transformers that convert a current detection signal into secondary conversion signals with a small current; a fault detection circuit section that determines whether or not a fault current occurs by comparing a current value according to a secondary conversion signal with a predetermined reference current value; a surge detection circuit section that determines whether or not a surge current occurs on the electric power circuit; and a trip determination unit that receives a fault detection signal and a surge detection signal, and generates a trip control signal when at least either one of the fault detection signal and the surge detection signal is received. | 01-21-2016 |
| 20150381069 | DATA PROCESSING DEVICE FOR HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM AND METHOD THEREOF - Provided is a data processing device of a high voltage direct current (HVDC) transmission system including: a measuring module measuring voltage and current at one or more points in the HVDC transmission system; a data processing part generating measured data units by using the measured values received from the measuring module; and a communication module transmitting the plurality of measured data units to the outside by using a wavelength division multiplexing method. | 12-31-2015 |
| 20150380194 | RELAY - A relay according to one embodiment of the present invention includes a housing, a cylinder, a fixed contactor coupled to the housing, a movable contactor contactable with or separated from the fixed contactor, a coil assembly disposed in the housing to generate a magnetic field, a movable shaft coupled with the movable contactor at an upper portion thereof, a fixed core inserted into the cylinder, a moving core fixed to the movable shaft to move the movable shaft in a pressing manner, a wipe spring to supply elastic force to the movable shaft, and a return spring located between the fixed core and the moving core. The moving core includes a cylindrical protrusion extending toward the fixed core and surrounding the movable shaft. | 12-31-2015 |
| 20150377930 | NEUTRAL POLE CURRENT TRANSFORMER MODULE FOR CIRCUIT BREAKER AND NEUTRAL POLE CURRENT DETECTING APPARATUS FOR CIRCUIT BREAKER - There is provided a neutral pole transformer module for a circuit breaker capable of minimizing an influence of external noise, detecting a neutral pole current at low manufacturing cost, and detecting a neutral pole current without modifying a configuration of an existing overcurrent relay or without installing an additional component in the existing overcurrent relay. The neutral pole transformer module for a circuit breaker comprises a ZCT configured to allow a transmission line of a neutral pole detection current output from the current transformer to pass therethrough and to provide a secondary output current signal obtained by reducing the neutral pole detection current in a predetermined ratio; a printed circuit board configured to convert the secondary output current signal into a voltage signal, and to differentiate the converted voltage signal and output the same; and an enclosure formed of an electrical insulator and enclosing the ZCT and the PCB. | 12-31-2015 |
| 20150366104 | METHOD FOR CONTROLLING TEMPERATURE OF INVERTER SYSTEM BY CONTOLLING A FAN - A method for controlling temperature of an inverter system having an inverter and a cooling fan is provided, the method including: obtaining an internal temperature of the inverter and a DC (Direct Current)-link voltage of the inverter; and outputting a fan driving control signal for driving the fan or maintaining the fan being driven to the fan, when the internal temperature is above a predetermined fan drive setting temperature and the DC-link voltage is above a predetermined fan drive setting voltage. | 12-17-2015 |
| 20150365132 | COMMUNICATION DEVICE USING POWER LINE AND METHOD OF OPERATING THE SAME - A power line communication device of an electric vehicle (EV) coupled to electric vehicle service equipment (EVSE) through a power line is provided. The power line communication device includes a noise measurement unit for applying a first voltage signal to the EVSE through the power line, receiving a second voltage signal output from the EVSE in response to the first voltage signal, and generating noise information comprising information on a result of comparison between the second voltage signal and the first voltage signal. The power line communication device includes a signal attenuation correction unit for receiving a plurality of power line signals from the EVSE and generating signal attenuation information based on the generated noise information and the plurality of power line signals. The power line communication device includes a communication modem for performing a communication exchange with the EVSE based on the generated signal attenuation information. | 12-17-2015 |
| 20150365016 | APPARATUS FOR DELAY ANGLE COMPENSATION OF FLYING START FUNCTION - An apparatus for delay angle compensation for flying start function in a medium-voltage inverter is disclosed. The apparatus generates generate a phase angle (θ) by converting a three-phase voltage of an inverter output terminal to dq-axis voltages (Vd, Vq), and calculate a compensation phase angle by a predetermined delay time. In addition, the apparatus generates an initial angle for the flying start by aggregating the compensation phase angle with the phase angle (θ). The apparatus may drive a high-voltage motor more stably, because an error between a command voltage phase angle and an actual output voltage phase angle may be reduced, when electric power of the medium voltage inverter is restored after a trip or an instantaneous blackout occurs. | 12-17-2015 |
| 20150364985 | SYSTEM FOR OPERATION CONTROL OF INVERTER IN EMERGENCY SITUATION - A system for inverter operation control in an emergency situation is provided, the system including: an inverter; an upper level controller configured to set a first operation mode for a normal operation of the inverter and a second operation mode in response to an emergency situation of the inverter; and a controller configured to control an operation of the inverter, by stopping an operation of the inverter when a measured voltage value or a measured current value of the inverter satisfies a first condition when the first operation mode is set, and by maintaining an operation of the inverter even when a measured voltage value or a measured current value of the inverter satisfies a first condition when the second operation mode is set. | 12-17-2015 |
| 20150364273 | CIRCUIT BREAKER AND METHOD OF CONTROLLING THE SAME - The present invention relates to a circuit breaker and a method of controlling the same. More specifically, the present invention is to provide a circuit breaker capable of performing an interruption operation and an interruption monitoring function through an integrated control contact for transmitting a control signal, in order to solve the conventional problem, i.e., a structural problem due to separation of control contacts, and a malfunction of a monitoring function when an interlock is set, and a method of controlling the circuit breaker. With such a configuration, the circuit breaker can have a simplified structure, and can be designed and controlled more easily and simply. | 12-17-2015 |
| 20150357939 | CASCADED H-BRIDGE INVERTER CAPABLE OF OPERATING IN BYPASS MODE - A cascaded H-bridge inverter capable of operating in bypass mode is disclosed where a bypass function can be performed through control of power switch, instead of allowing each unit power cell forming a cascaded H-bridge inverter to use a separate bypass switch, and a cell driver controls each power switch in a freewheeling mode to allow a current inputted to any output terminal to flow other output terminals when bypass function is to be performed for relevant unit power cell, whereby a stable operation can be performed even if there is no bypass switch at each unit power cell, and a cost saving can be accomplished, because an additional bypass switch such as a MC (Magnetic Controller) is not used. | 12-10-2015 |
| 20150357936 | METHOD FOR VOLTAGE DIP COMPENSATION OF INVERTER - Disclosed is a method for voltage dip compensation of inverter, the method including reducing an output frequency of an inverter to obtain a regenerative energy when it is determined that power failure has occurred during the inverter operation, adjusting increase/decrease of inverter output frequency in response to size of exceeding current and voltage based on an output current and DC-link voltage of the inverter, increasing the inverter output frequency in order to prevent excessive current flow when power restoration occurs at a power failure state, and returning to a speed prior to the momentary voltage dip by gradually increasing the inverter output frequency in a state where the inverter output frequency does not exceed an over-current limit by monitoring the inverter output frequency. | 12-10-2015 |
| 20150355236 | PROTECTIVE RELAYING SYSTEM AND METHOD FOR GATHERING DATA USING THEREOF - A protective relaying system and a data collection method thereof capable of enhancing a data collection efficiency and effectiveness is provided. The protective relaying system may include a plurality of protective relaying modules respectively connected to a switch to control the operation of the switch; a server module coupled to one of the plurality of protective relaying modules, and connected to the plurality of protective relaying modules, respectively, to sequentially collect and store data of the plurality of protective relaying modules; and a remote monitoring unit connected to the server module to collectively receive and collect the stored data of the plurality of protective relaying modules from the server module. | 12-10-2015 |
| 20150349513 | CIRCUIT BREAKER - A circuit breaker according to the present invention includes a terminal switching unit mounted in an enclosure thereof, and the terminal switching unit accommodates, in a base as an outer casing thereof, a fixed contactor and a movable contactor contactable with and separated from each other, a sliding unit rotatably supporting the movable contactor, and a detection mechanism to detect a fault current. Radiators are provided at side portions of at least one of a contact portion where the movable contactor comes in contact with the fixed contactor, the sliding unit and the detection mechanism, each radiator radiating heat to the outside of the base. This may prevent an increase in temperature of the circuit breaker within a limited space without an increase in costs. | 12-03-2015 |
| 20150333678 | CONVERTER AND OPERATING METHOD THEREOF - A converter and an operation method thereof are provided. A converter interconnected with a wind power generation farm includes a power monitor unit configured to detect a direct-current voltage of an entire system interconnected with the converter, a control unit configured to compare the detected direct-current voltage of the entire system with a reference voltage and adjust an alternating-current voltage that is supplied to the wind power generation farm to a preset value, and a switching unit configured to perform a switching operation based on the adjusted preset value to convert alternating-current power into direct-current power. | 11-19-2015 |
| 20150333654 | MODULAR MULTI-LEVEL CONVERTER - Provided is a modular multi-level converter (MMC) including a plurality of sub-modules including switching elements, and a central control unit which assigns an address to each of the plurality of sub-modules for distinguishing each of the plurality of sub-modules, determines switching operation conditions of the plurality of sub-modules based on the assigned addresses, and outputs switching signals corresponding to the determined switching operation conditions. The central control unit determines a switching sequence of the plurality of the sub-modules according to the sequence of the assigned addresses. | 11-19-2015 |
| 20150333653 | DEVIATION COMPENSATION METHOD OF POTENTIAL TRANSFORMER - A deviation compensation method of a potential transformer is provided. The deviation compensation method includes: detecting an output voltage value of a first potential transformer; checking a compensation value applied to the first potential transformer; compensating for the output voltage value based on the compensation value to measure an actual voltage value for a location at which the first potential transformer is installed; verifying the validity of the measured actual voltage value; and resetting a deviation compensator measuring the actual voltage value according to a result of verification on the validity of the actual voltage value. | 11-19-2015 |
| 20150333652 | DEVIATION COMPENSATION METHOD OF POTENTIAL TRANSFORMER - A deviation compensation method of a potential transformer is provided. The deviation compensation method includes: providing first to Nth potential transformers to be installed at different locations in a high voltage direct current (HVDC) transmission system; supplying a first voltage to the first to Nth potential transformers provided; measuring voltage values output through the first to Nth transformers by the first voltage supplied; determining whether there is a deviation between the measured voltage values; and determining compensation values for correcting the measured voltage values to the same voltage value when there is the deviation. | 11-19-2015 |
| 20150333651 | DATA PROCESSING DEVICE AND METHOD FOR HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM - A data processing device in a high voltage direct current (HVDC) transmission system is provided. The data processing device includes a measurement module measuring a voltage or current for one or more points in the HVDC system; a data processing unit generating measurement data units using measurement values measured at the measurement module; and a communication module using wavelength division multiplexing to transmit the measurement data units to the outside through one optical fiber, wherein the optical fiber includes a plurality of cores. | 11-19-2015 |
| 20150333650 | DATA PROCESSING DEVICE AND METHOD FOR HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM - A data processing device is provided. The data processing device in a high voltage direct current (HVDC) transmission system includes a measurement module measuring a voltage or current for one or more points in the HVDC system; and a data processing and control unit generating measurement data units using measurement values measured at the measurement module and performing serial transmission on the generated measurement data units through time division multiplexing (TDM), wherein the data processing and control unit includes a plurality of data unit generation parts, and each of the plurality of data unit generation parts outputs a transmission completion signal representing that the transmission of a measurement data unit is completed. | 11-19-2015 |
| 20150333649 | MODULAR MULTI-LEVEL CONVERTER - Provided is a modular multi-level converter including a plurality of sub-modules including switching elements, a plurality of sub-control units respectively controlling the plurality of switching elements included in the plurality of sub-modules, and a central control unit which determines switching operation conditions of the plurality of sub-modules, and transmits control signals corresponding to the determined switching operation conditions to the plurality of sub-control units. Each of the plurality of sub-control units acquires state information on the sub-module controlled thereby and transmits the acquired state information to the central control unit. | 11-19-2015 |
| 20150333648 | HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM AND CONTROL METHOD THEREOF - A high voltage direct current (HVDC) transmission system is provided. The high voltage direct current (HVDC) transmission system includes a rectifier converting alternating current (AC) power into DC power; an inverter converting the DC power into the AC power; DC transmission lines W | 11-19-2015 |
| 20150333647 | HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM AND CONTROL METHOD THEREOF - A high voltage direct current (HVDC) transmission system is provided. The high voltage direct current (HVDC) transmission system includes: a rectifier converting alternating current (AC) power into DC power; an inverter converting the DC power into the AC power; a DC transmission line transmitting, to the inverter, the DC power obtained through conversion by the rectifier; a first active power measurement unit measuring first active power input to the rectifier; a second active power measurement unit measuring second active power output from the inverter; and a first control unit detecting an abnormal voltage state on the DC transmission line based on the first and second active power measured. | 11-19-2015 |
| 20150333646 | APPARATUS AND METHOD FOR INSULATION DESIGN OF HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM - Provided is an apparatus for an insulation design. The apparatus for the insulation design, which performs the insulation design of a high voltage direct current (HVDC) transmission system includes a contingency state voltage calculation unit, a case analysis performance unit, and a rated insulation level calculation unit. | 11-19-2015 |
| 20150333645 | APPARATUS AND METHOD FOR INSULATION DESIGN OF HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM - Provided is an apparatus for an insulation design. The apparatus for the insulation design, which performs the insulation design of a high voltage direct current (HVDC) transmission system, includes a first insulation modeling unit, an insulation level calculation unit, a second insulation modeling unit, and a rated insulation level calculation unit. | 11-19-2015 |
| 20150333644 | APPARATUS AND METHOD FOR DESIGN OF HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM - Provided is an apparatus for an insulation design. The apparatus for an insulation design, which performs the insulation design of a high voltage direct current (HVDC) transmission system, includes an HVDC transmission system operation information acquisition unit, a design specification acquisition unit, a design requirement acquisition unit, and an HVDC transmission system design unit. | 11-19-2015 |
| 20150333643 | HVDC TRANSMISSION SYSTEM - A high voltage direct current (HVDC) transmission system is provided. The high voltage direct current (HVDC) transmission system includes: an integrated measurement panel; and an HVDC transmission device, wherein the HVDC transmission device is configured to: receive, from the integrated measurement panel, compensation values for compensating for the voltage values output through the first to Nth potential transformers, compensate for the voltage values output through the first to Nth potential transformers by using the received compensation values, and measure the actual voltage values by using the compensated voltage values. | 11-19-2015 |
| 20150333642 | HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM AND CONTROLLING METHOD THEREOF - Provided is a high voltage direct current transmission system including a power transmission part converting AC power into DC power; a power receiving part converting DC power into AC power; and a DC power transmission part transferring the DC power converted in the power transmission part to the power receiving part, wherein one of the power transmission part and the power receiving part includes a measuring part measuring an AC voltage; an AC voltage control unit generating a first reactive power control signal based on the measured AC voltage and a reference AC voltage; a reactive power control unit generating a second reactive power control signal based on the first reactive power control signal and a reference reactive power signal; and a power control unit controlling reactive power of the power transmission part or the power receiving part based on the second reactive power control signal. | 11-19-2015 |
| 20150333525 | HIGH-VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM CONTROL DEVICE - The present disclosure relates to a high-voltage direct current (HVDC) transmission system, and particularly, to an HVDC transmission system control device associated with a power generation energy system. An HVDC transmission system control device according to an embodiment includes a wind power generation amount predicting unit configured to receive energy generated by a wind power generation device for a predetermined time, and predict a wind power generation amount on the basis of the received energy, a possible power generation amount predicting unit configured to determine an amount of energy generated by the wind power generation device and a transmission capacity corresponding to the amount of energy, on the basis of the predicted wind power generation amount, and a control unit configured to output energy to a power transformation device on the basis of the amount of energy and the transmission capacity predicted by the possible power generation amount predicting unit. | 11-19-2015 |
| 20150333506 | FAULT CURRENT LIMITER - This specification relates to fault current limiter (FCL). More particularly, to solve problems of protecting and designing current limiting impedance in a protective coordination system, as limitations of the related art, the fault current limiter may measure heat capacity of a current limiting impedance unit by detecting fault current flowing to the current limiting impedance unit and limiting the fault current flowing to the current limiting impedance unit according to the measured heat capacity, which may result in preventing the current limiting impedance unit from being damaged due to the fault current, preventing an extended accident due to the damaged current limiting impedance unit and enabling a stabilized system and line protection. | 11-19-2015 |
| 20150332884 | FAST SWITCH - The fast switch includes: a housing; a vacuum interrupter installed in the housing, connected to a main circuit, and configured to open and close the main circuit; a contact spring coupled to a mover of the vacuum interrupter, and configured to provide a contact force; an insulating rod connected to the contact spring; a permanent magnet actuator connected to a lower end of the insulating rod, and configured to provide a switching driving force; a first capacitor configured to provide a discharge current to a coil of the permanent magnet actuator; a driving coil connected to a lower end of the permanent magnet actuator; and a second capacitor configured to provide a discharge current to the driving coil. | 11-19-2015 |
| 20150331967 | APPARATUS AND METHOD FOR VERIFYING LIGHTNING ARRESTER OF HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM - Provided is an apparatus for an insulation design. The apparatus for the insulation design, which performs the insulation design of a high voltage direct current (HVDC) transmission system, includes an insulation design part, a lighting arrester modeling part, a simulation test part, a comparison part, and a result output part. | 11-19-2015 |
| 20150331823 | EXPANSION MODULE FOR PROGRAMMABLE LOGIC CONTROLLER USING USB COMMUNICATION - An expansion module for a PLC, used in such a manner that at least one expansion module is sequentially connected to a basic unit in order to exchange massive data at high speed by using USB communication, is provided. Each of the expansion module includes a USB hub and a USB device, and is allocated with an exchange number from a USB host of the basic unit by activating the USB device according to input of a trigger signal. In addition, whether the USB hub is to be used is determined by deciding whether the expansion through the USB hub is required according to the allocated exchange number. Thus, a user needs only to arrange each of the expansion modules by a designation. | 11-19-2015 |
| 20150331407 | APPARATUS FOR PROGRAM MANAGEMENT OF PROGRAMMABLE LOGIC CONTROLLER - An execution code of a user program applicable to a PLC is fitted and arranged to an adequate block among memory blocks of variable sizes, and execution order and position information of each execution code are downloaded to the PLC along with recorded execution table. A CPU module of PLC sequentially executes each execution code randomly arranged on a memory with reference to the execution table. Because an execution code is loaded on a memory block having respectively different sizes such as N, 2 N and 4 N, utilization of non-use space can be improved over a conventional allocation method of fixed size. An execution table is utilized to discontinuously configure a program execution area, whereby a user program can be easily modified or added during PLC operation. | 11-19-2015 |
| 20150331033 | DEVIATION COMPENSATION METHOD OF POTENTIAL TRANSFORMER - A deviation compensation method of a potential transformer is provided. The deviation compensation method includes: providing a first voltage to first to Nth potential transformers respectively installed at different locations in a high voltage direct current (HVDC) transmission system; measuring voltage values output through the first to Nth transformers by the first voltage supplied; determining whether there is a deviation between the measured voltage values; and determining compensation values for correcting the measured voltage values to the same voltage value when there is the deviation. | 11-19-2015 |
| 20150326162 | APPARATUS FOR CONTROLLING INDUCTION MACHINE - An apparatus for controlling an induction motor is provided, the apparatus generates generating a d-axis current command and a q-axis current command of a torque command, estimating speed of a rotor of the motor, and correcting the d-axis and q-axis current commands by using the estimated speed, to enhances the rotor speed and position estimation performance by increasing the slip frequency. | 11-12-2015 |
| 20150324874 | PREPAYMENT-TYPE WATT-HOUR METER - Provided is a prepayment-type watt-hour meter including: a code recognition that recognizes a code image in which information on prepayment of a charge-based amount of electric power that is to be consumed by a load is stored as coded, and that recognizes the information on the prepayment that is stored in the code image; and a control unit that measures an amount of electric power consumption by the load, and that calculates the electric bill for the measured amount of electric power, based on the information on the prepayment that is recognized by the code recognition unit. | 11-12-2015 |
| 20150324140 | ELECTRONIC DEVICE WITH MEMORY DATA BACKUP FUNCTION - An electronic device with data backup function is disclosed. The electronic may include: a main memory; a controller; a main power supply unit configured to supply a main electric power to the controller and the main memory; an auxiliary power supply unit configured to supply an auxiliary electric power to the controller and the main memory; and a power supply monitoring unit configured, by monitoring a state of the main electric power, to transmit either a normality detection signal or an abnormality detection signal to the controller, and to apply either the main electric power or the auxiliary electric power to the controller and the main memory, according to the state of the main electric power, wherein the controller backs up the data stored in the main memory and an operation state of the controller itself to an auxiliary memory, when receiving the abnormality detection signal. | 11-12-2015 |
| 20150323970 | APPARATUS FOR CONTROLLING POWER SUPPLY - This specification relates to a power supply control apparatus. In order to solve problems of a power supply control only with respect to a preset time slot and difficulties in power supply to a plurality of consumers and metering of power supplied, which are the drawbacks of the related art electronic power meter, the power supply control apparatus can store or supply power according to a comparison result between a preset reference and a real-time pricing rate. Accordingly, electric charges, which are decided according to an amount of power used and reflect real-time rates thereto, can be saved and an appropriate power supply and an appropriate power reception of a consumer according to the real-time pricing rate can be allowed. | 11-12-2015 |
| 20150319512 | REMOTE METER READING SYSTEM AND METHOD USING MULTIPLE MASTER DEVICES - This specification relates to a remote meter reading system using a plurality of master devices and a remote meter reading method thereof, and more particularly, a remote meter reading system using a plurality of master devices, capable of allowing for communication with another electricity meter modem which can replace one electricity meter modem when there is a trouble in communication between the one electricity meter modem and the master devices, allowing for fast and flexible reaction with respect to changes in communication network between the electricity meter modem and the master devices, and constructing a network path for communication with an optimal communication performance, all by way of enabling network connection and information sharing among master devices through communication between electricity meter modems and the plurality of master devices, and a remote meter reading method thereof. | 11-05-2015 |
| 20150316932 | ELECTRIC POWER METER CAPABLE OF MONITORING CONTACT STATUS OF LATCH RELAY - An electric power meter capable of monitoring a contact status of a latch relay, comprises: a latch relay having a pair of primary coils and a secondary contact, the secondary contact operable to a closed position or an open position, the primary coils configured to provide a magnetic force to open or close the secondary contact; and a meter controller configured to determine that the latch relay is in a closed position when the input voltage of the primary coils is substantially equal to the output voltage of the secondary contact with a predetermined allowable error range, and configured to determine that the latch relay is in an open position when the output voltage of the secondary contact has not been input, even if the input voltage of the primary coils has been input. | 11-05-2015 |
| 20150312756 | POWER SYSTEM - A power system is provided. The power system includes a power device group including a power device, at least one communication device mutually connected through a short range communication network, and a monitoring/controlling device connected to the communication device in a wired manner and transmitting and receiving state information data and control data of the power device through the communication device. The communication device includes a first communication unit connecting the communication devices through the shore range communication network, and a second communication unit connected to the monitoring/controlling device in a wired manner. | 10-29-2015 |
| 20150311862 | APPARATUS FOR MONITORING LEAKAGE CURRENT OF TRANSFORMER-LESS PHOTOVOLTAIC INVERTER - Disclosed is an apparatus for monitoring a leakage current of a transformer-less photovoltaic inverter, which can reduce the risk of a fault in a grid due to a leakage current in a photovoltaic inverter. The apparatus comprises a low pass filter configured to remove a high-frequency noise of a sensed leakage current signal; an average value calculator configured to calculate an average value of an output of the low pass filter; a direct current component remover configured to subtract the average value from the output of the low pass filter; a phase locked loop circuit section configured to calculate a peak value and a phase of a signal from which the direct current component has been removed; and a resistive component leakage current calculator configured to calculate a resistive component value of a leakage current, based on the peak value and the phase calculated. | 10-29-2015 |
| 20150311847 | ROTATION ANGLE ESTIMATION MODULE FOR SENSORLESS VECTOR CONTROL OF PMSM - A rotation angle estimation module is provided. The rotation angle estimation module includes: a fixed flux instruction estimation unit calculating a rotating flux (λ | 10-29-2015 |
| 20150309556 | POWER SYSTEM MONITORING AND CONTROL SYSTEM - A system for monitoring a power system and controlling an operation is provided. The system includes: a process setting unit receiving a process modeling file from a user and setting, as a process setting model, a process modeling file on which process verification is completed; a process verification unit performing the verification of preset process modeling items on the process modeling files received from the user; and a data storage unit storing file information for the operation of a system, the process modeling file, process modeling verification results, and the process setting file. | 10-29-2015 |
| 20150309096 | INSTANTANEOUS POWER MONITORING SYSTEM FOR HVDC SYSTEM - A high voltage direct current (HVDC) instantaneous power monitoring system is provided. The high voltage direct current (HVDC) instantaneous power monitoring system includes a calculation processing unit receiving three-phase current and voltage, detecting a synchronous phase angle from received three-phase current and voltage, and transforming two-phase data into two-phase data to output two-phase data; and a data processing unit storing data transformed at the calculation processing unit. | 10-29-2015 |
| 20150303827 | CONTROLLER FOR GRID TIED INVERTER SYSTEM - The present invention relates to a controller for a grid tied inverter system with an improved control configuration for increasing response speed of an output current according to specific electric power required. The controller comprises a first control circuit section to output a direct current (DC)-DC converter control signal, and a second control circuit section to output an inverter control signal, wherein the first control circuit section and the second control circuit section are independent of each other without a link for signal input and output therebetween. | 10-22-2015 |
| 20150296277 | THREE-PHASE POWER LINE COMMUNICATION APPARATUS AND COMMUNICATION METHOD THEREOF - Disclosed are a three-phase power line communication apparatus and a communication method thereof, and more particularly, to a three-phase power line communication apparatus capable of establishing a network group for each of three phases, performing communication by each established network group, setting a communication plan by each established network group, and performing communication with meters installed on each phase, in order to solve the conventional communication collision occurring on a single network group, and a communication method thereof. Since a network group is established for each of three phases and communication is performed by each network group, communication can be performed precisely and systematically, and data exchange and data management between communication apparatuses can be facilitated. | 10-15-2015 |
| 20150295404 | CHANGEOVER METHOD OF HVDC TRANSMISSION SYSTEM - A changeover method of a high voltage direct current (HVDC) transmission system is provided. A first system is set to an active state. A ready signal is transmitted from the first system to a first COL. A ready detection signal and an active signal are transmitted to the first system, in response to the ready signal. A confirm signal is transmitted to the first system in response to the active signal when the ready detection signal matches the ready signal. | 10-15-2015 |
| 20150293866 | PLC SYSTEM HAVING A PLURALITY OF CPU MODULES AND CONTROL METHOD THEREOF - Disclosed is a PLC system having a plurality of CPU modules and a control method thereof, wherein the method includes ascertaining a clock signal when a count is a count corresponding to a time slot allocated by a master CPU module, generating a clock signal by accessing to a backplane, and ending generation of clock signal at a time when the access to the backplane ends. | 10-15-2015 |
| 20150293801 | APPARATUS, SYSTEM AND METHOD FOR APPLICATION LOG DATA PROCESSING - The present disclosure relates to a log data processing apparatus and a method for controlling the same. A log data processing apparatus according to an embodiment includes a communication unit configured to receive information on log data corresponding to an application from a device for generating the log data, a control unit configured to generate a log message on a basis of the log data information, and a storage unit configured to store the log message and generation history information of the log message generated, wherein the log data information includes a log message parameter, message code information, and identifier information of the application. | 10-15-2015 |
| 20150293152 | SYSTEM FOR MEASURING LOSS OF HVDC - A system for measuring a loss in power between a power transmission side and a power reception side in a high voltage direct current (HVDC) system is provided. The system for measuring the loss in power includes: a first loss measurement unit installed at the power transmission side, and a second loss measurement unit installed at the power reception side, wherein each of the first and second loss measurement units is installed at a location at which a current or voltage is measured, and includes a voltage sensor for measuring a voltage, a current sensor for measuring a current, a GPS module for providing time information on when measurement is performed by the voltage sensor and the current sensor, and a storage unit storing the time information along with a voltage value and a current value measured by the voltage sensor and the current sensor. | 10-15-2015 |
| 20150286950 | APPARATUS FOR FORECASTING WATER DEMAND - There is provided an apparatus for forecasting water demand of a waste system using an automation system. The apparatus for estimating water demand includes a water demand estimation setting unit configured to collect user input data, a control unit configured to collect the record data and the user input data from the SCADA system, perform a learning process on each of a plurality of algorithm combination groups including at least one algorithm to select any one algorithm combination group, and input the record data and the user input data to the selected algorithm combination group to calculate water demand estimation data, a storage unit configured to store the record data collected from the SCADA system, store the user input data, and store the water demand estimation data, and a water demand estimation output unit configured to output the calculated water demand estimation data. | 10-08-2015 |
| 20150280419 | PROTECTION SYSTEM AGAINST REVERSE BATTERY CONNECTION - A protection system against reverse battery connection according to an embodiment includes a controller configured to output a first square wave signal including a third square wave signal and a fourth square wave signal to an input terminal of a transformer using a first DC voltage, the transformer configured to output a second square wave signal obtained by transforming the first square wave signal, a rectifier configured to rectify the second square wave signal to output a second DC voltage, and a transistor configured to perform protection against reverse connection of a battery using the second DC voltage. | 10-01-2015 |
| 20150276878 | INTERCONNECTION EVALUATION SYSTEM AND METHOD FOR SWITCHBOARD - An interconnection evaluation system according to the present disclosure includes a switchboard including at least one endpoint, at least one endpoint contact tester configured to transmit a digital input signal obtained from each endpoint, an automation tester configured to output a preset digital output signal to the switchboard, and to generate interconnection information at each endpoint by reflecting the digital output signal and digital input signal, and an interface unit configured to generate a switchboard status information of switchboard by reflecting the interconnection information. | 10-01-2015 |
| 20150271956 | ELECTRONIC COMPONENT CASE FOR VEHICLE - An electronic component case for a vehicle is provided. The electronic component case includes a case body having a first space in which electronic components are disposed and a second space, which has an opening that is opened to the outside, defined adjacent to the first space to receive heat generated from the electronic components, wherein a coolant for cooling the electronic components is introduced into and discharged from the second space, and a cover disposed on the case body to seal the opening of the second space. The cover includes a first cover sealing the opening and a second cover sealing the opening and having one surface on which a first cooling part for increasing a surface area of the second cover is disposed. The first cover and the second cover are compatible with each other. | 09-24-2015 |
| 20150270732 | SYSTEM FOR CHARGING BATTERY OF ENERGY STORAGE SYSTEM USING PCS - A system for charging a battery of an energy storage system using a photovoltaic inverter, includes: a photovoltaic inverter configured to convert a DC power generated from a photovoltaic module into an AC power, and to output the AC power; and an energy storage system configured to set a preset power value by considering an output power of the photovoltaic inverter according to the amount of solar radiation, and configured to charge a battery in a mode selected from a constant current (CC) mode and a constant voltage (CV) mode based on a comparison result obtained by comparing the preset power value, with an input power generated from the photovoltaic module and input from the photovoltaic inverter. | 09-24-2015 |
| 20150268685 | DATA PROCESSING APPARATUS OF ENERGY MANAGEMENT SYSTEM - An apparatus for data processing in an energy management system is provided. The apparatus includes an operation and management unit collecting data obtained by measuring a target, storing a limit information table including at least one limit set determining whether to output an alarm for collected data, and outputting the alarm for the collected data based on the limit information table; and a history management unit storing history information on the operation and management unit. | 09-24-2015 |
| 20150268684 | APPARATUS FOR DATA PROCESSING OF ENERGY MANAGEMENT SYSTEM - An apparatus for data processing is provided. The apparatus includes: a data obtaining unit obtaining power system data from pieces of power system equipment; a power system monitoring unit displaying a power system operation state based on power system data obtained from the data obtaining unit, raising an alarm when the power system operation state changes, and outputting reference data corresponding to data on which the alarm occurs; a DB storing the power system data obtained from the data obtaining unit, alarm raising criterion information on the power system data, and reference data corresponding to the power system data; and a remote control unit transmitting a control signal for controlling the pieces of power system equipment based on the power system operation state displayed on the power system monitoring unit. | 09-24-2015 |
| 20150266388 | CABLE INSTALLMENT TYPE CHARGING CONTROL DEVICE AND METHOD OF OPERATING THE SAME - A cable installment type charging control device for charging an electric vehicle (EV) by using power of a grid-side is provided. The cable installment type charging control device includes a first relay delivering power of the grid-side to an EV-side, a second relay delivering power of the grid-side to the EV-side, a first sub fusion detecting unit for detecting whether the first relay is fused through an-EV side terminal of the first relay and a grid-side terminal of the second relay, and a second sub fusion detecting unit for detecting whether the second relay is fused through an-EV side terminal of the second relay and a grid-side terminal of the first relay. | 09-24-2015 |
| 20150263919 | MONITORING METHOD AND DEVICE OF TWO-CHANNEL BUS DATA IN NETWORK SYSTEM - The present disclosure includes: a first channel unit configured to transmit and receive a data piece with a network bus, to convert the received data piece to an MII data piece, and to transmit and receive the converted MII data piece; a second channel unit configured to transmit and receive a data piece with the network bus, to convert the received data piece to an MII data piece, and to transmit and receive the converted MII data piece; a CPU configured to recognize a carrier detection signal (CRC) of the MII data received from the first channel unit and the second channel unit, and to transmit and receive the MII data; and a monitoring unit configured to perform a data communication with the CPU, and to monitor a data piece by each channel from the MII data received from the CPU. | 09-17-2015 |
| 20150263694 | PCB FOR REDUCING ELECTROMAGNETIC INTERFERENCE OF ELECTRIC VEHICLE - A printed circuit board (PCB) for reducing EMI of an electric vehicle is provided. The PCB includes an electromagnetic interference (EMI) filter connected to a battery power supply and filtering EMI noise, a plurality of chassis ground (GND) terminals, a chassis GND pattern formed to ground a power GND terminal to the plurality of chassis GND terminals, a coupling prevention capacitor installed between the power GND terminal and the plurality of chassis GND terminals to prevent noise coupling between the power GND terminal and the chassis GND terminals, and a merge resistor installed between the power GND terminal and the plurality of chassis GND terminals to merge noise occurring when charging the battery power supply to the plurality of chassis GND terminals. | 09-17-2015 |
| 20150263662 | APPARATUS FOR CONTROLLING MOTOR IN ELECTRIC VEHICLE AND METHOD FOR PREVENTING OVERHEATING OF TRACTION MOTOR - Provided is a method for preventing overheating of a traction motor in an electric vehicle. The method for preventing the overheating of the traction motor in the electric vehicle includes identifying magnitude of an output load of the motor, identifying a loading time of the motor on the basis of the identified magnitude of the output load, comparing the identified loading time to a preset critical time, and controlling output torque of the motor according to the comparison result. | 09-17-2015 |
| 20150263659 | APPARATUS FOR DETECTING SPEED OF MOTOR - An apparatus for detecting speed of a motor is disclosed, the apparatus including an amplifier configured to amplify a two-phase sine-wave signal inputted from an encoder based on rotation of a motor; a first conversion unit configured to convert the two-phase sine-wave signal to a digital data; a second conversion unit configured to convert the two-phase sine-wave signal to a square-wave signal; a counter unit configured to accumulate by counting the square-wave signal; and a speed determination unit configured to determine a speed of the motor, by receiving the digital data from the first conversion unit and the accumulated count from the counter unit. | 09-17-2015 |
| 20150262778 | MOLDED CASE CIRCUIT BREAKER - Provided is a molded case circuit breaker eliminating the necessity to install a communication unit and a particular communication medium and allowing for checking an fault type from a front indication operation panel of an enclosure of a power distributing board or from a remote area by simply connecting two signal lines for transmitting a relay switching signal as an accident current indication signal, the circuit breaker comprises a relay assembly including a plurality of fault indicating relays installed in the circuit breaker and configured to generate a fault current indication signal by opening or closing a contact when the indication command signal of a fault current is received from the electronic trip unit, and a signal output terminal configured to output a fault type indication signal of the fault indicating relays to the outside of the circuit breaker. | 09-17-2015 |
| 20150262437 | SECURITY APPARATUS FOR ENERGY STORAGE SYSTEM - A security apparatus for an energy storage system is provided. The security apparatus includes a sensor input unit receiving security state information including door opening and closing and locking/unlocking from a door opening and closing sensor and a locking/unlocking sensor; a human machine interface (HMI) unit receiving information from a user or showing the information to the user; and a security state machine allowing manipulation of the energy storage system depending on whether security state information obtained through the sensor input unit satisfies a security state condition having a plurality of procedures in order. | 09-17-2015 |
| 20150260822 | DUPLEX SYSTEM - A duplex system measuring and outputting at least one of a voltage and current is provided. A first measurement device measures at least one of the voltage and current. A second measurement device measures at least one of the voltage and current. A control device is disconnected from the first measurement device and performs a changeover to the second measurement device when the first measurement device abnormally operates. A filter filters a second measurement value of the second measurement device based on a first measurement value of the first measurement device to output a filtered value. | 09-17-2015 |
| 20150260778 | DIAGNOSIS SYSTEM FOR MONITORING STATE OF SWITCHBOARD - A diagnosis system for monitoring a status of a switchboard is provided. The diagnosis system for monitoring a status of a switchboard includes a sensor unit installed in a switchboard, wherein the sensor unit comprise a plurality of sensors sensing two or more of a partial discharge (PD) signal, a temperature signal and an acc signal and outputting each switchboard status sensing signal; a data collecting device receiving each switchboard status sensing signal corresponding to two or more of the PD signal, the temperature signal, and the arc signal from the sensor unit wherein the data collecting device collects a plurality of datums for status monitoring and diagnosis control of the switchboard based on each switchboard status sensing signal received; and a remote monitoring device performing the status monitoring and diagnosis control of the switchboard based on a plurality of measuring datums received from the data collecting device. | 09-17-2015 |
| 20150260161 | CONTROL DEVICE FOR VOLTAGE SOURCE CONVERTER AND OPERATING METHOD THEREOF - A control device for a voltage source converter connected to a wind farm is provided. The control device includes: a power source monitor unit sensing a direct current (DC) voltage of a whole grid connected to the voltage source converter; and a control unit comparing the DC voltage of the whole grid sensed with a reference voltage, wherein the control unit adjusts an alternating current (AC) supplying to the wind farm to a setting when as a result of comparison, the DC voltage of the whole grid sensed is out of a preset range of reference voltages. | 09-17-2015 |
| 20150260151 | SYSTEM FOR CONTROLLING WATER TURBINE GENERATOR FOR WATERWORKS - Disclosed is a system for controlling a water turbine generator for waterworks, which monitors and controls a plurality of water turbine generators, provided in a water pipe, for waterworks in real time to integratedly operate the water turbine generators, contributes to stably generate and secure power, and increases an efficiency of the water turbine generators through integrated management. The system for controlling a water turbine generator for waterworks includes an integration control system configured to establish a power generation driving plan, based on a target amount of energy collected by a plurality of water turbine generators and a driving range of each of the plurality of water turbine generators, and a power generation unit configured to generate power through generation of power by a water turbine according to control based on the power generation driving plan, measure an amount of generated power, an amount and a pressure of water flowing into the plurality of water turbine generators, and an amount and a pressure of water flowing out from the plurality of water turbine generators, and supply a result of the measurement to the integration control system. | 09-17-2015 |
| 20150215188 | MEDIA ACCESS CONTROL FILTERING APPARATUS FOR HIGH SPEED SWITCHING AND OPERATING METHOD THEREOF - A media access control (MAC) filtering method is provided. The MAC filtering method includes setting a variable of condition on a target frame to be re-transmitted, with a relay control logic; receiving data from a physical layer; storing the received data in a relay buffer; determining whether to re-transmit the receive data; monitoring a transmission state of a MAC control logic and transmitting the received data while the MAC control logic is not used, to prevent data collision, when as a result of the determination that the receive data needs to be re-transmitted; and storing information that the received data is being transmitted, into a transmit state memory in the MAC control logic, when the received data is transmitted. | 07-30-2015 |
| 20150214971 | SYSTEM AND METHOD FOR SETTING OFFSET AND GAIN OF ANALOG INPUT MODULE - The present disclosure relates to a system for setting offset and gain of an analog input module, the system configured to set the offset and gain of the analog input module by outputting an offset value and a gain value to the analog module, using the analog module formed with a plurality of channels. The system includes a control unit configured to output a control signal for outputting the offset value and the gain value, a setting value providing unit configured to output a setting signal by the control signal from the control unit, wherein the setting signal is in a form of a pulse including the offset value and the gain value, and relay unit configured to be switched for applying the setting signal to the analog input module by the control signal from the control unit. | 07-30-2015 |
| 20150214941 | METHOD FOR GENERATING CLOCK FOR SYSTEM OPERATING AT RISING EDGE - A method of converting an input clock to generate an output clock and providing a certain system with the output clock is provided. The method includes setting up a desired output clock value and a variable value and determining whether the input clock is the rising edge; adding the output clock value to the variable value to provide a calculated value when the input clock is the rising edge; comparing the calculated value with the input clock value; and outputting, when the calculated value is equal to or larger than the input clock value as a result of comparison, the output clock as logic state ‘1’ and setting, a value obtained by subtracting the input clock value from the calculated value, as the variable value. | 07-30-2015 |
| 20150214881 | DEVICE AND METHOD FOR CONTROLLING ELECTRIC MOTOR - A device for controlling an electric motor is provided. The device includes: an inverter supplying a current to an electric motor; a current sensor sensing a current supplied from the inverter to the electric motor; and a control unit enabling the current to be supplied from the inverter to the electric motor, obtaining first and second offset values sensed from the current sensor at a plurality of times, comparing the plurality of offset values obtained, and updating the first offset value to the second offset value according to a result of comparing the offset values. | 07-30-2015 |
| 20150214868 | APPARATUS AND METHOD FOR DETECTING OVERCURRENT IN INVERTER - An apparatus for sensing an overcurrent is provided. The apparatus for sensing an overcurrent includes an inverter converting a direct current (DC) into an alternating current (AC) and supplying the AC to a motor to allow the motor to operate; a current sensing unit provided on a connection between the inverter and the motor and measuring an overcurrent of a control current value output from the inverter; and a control unit checking with the current sensing unit whether the overcurrent is sensed, and determining whether to operate the inverter, wherein the control unit creating an interrupt service routine (ISR) for checking overcurrent information and checks the overcurrent information according to a created ISR, when the overcurrent is sensed through the current sensing unit. | 07-30-2015 |
| 20150214754 | METHOD OF CONTROLLING CHARGING AND DISCHARGING OF BATTERY ENERGY STORAGE DEVICE AND THE BATTERY ENERGY STORAGE DEVICE FOR THE SAME - A method of charging and discharging battery energy storage device is provided. The method includes measuring a voltage and a frequency of a grid, measuring a state of charge (SOC) value of a battery, calculating an SOC offset value and an SOC feedback gain value from the measured SOC value of the battery, and performing a voltage droop control based on the voltage of the grid and a frequency droop control on the basis of the frequency of the grid, the SOC offset value and the SOC feedback gain value and controlling charging and discharging of the battery. | 07-30-2015 |
| 20150214728 | ANALOG CURRENT OUTPUT MODULE - An analog current output module includes an MPU generating and outputting a digital signal, a D/A converter converting the digital signal into an analog signal and outputting the analog signal, an analog current output circuit outputting a control current corresponding to the analog signal output from the D/A converter, and an overload detecting unit detecting whether an overload occurs by measuring the control current and comparing a value of the control current and a preset reference value, wherein the overload detecting unit sets the reference value on the basis of a reference value generating signal delivered from the MPU, and the overload detecting unit comprises a comparator comparing the control current value and the reference value and detecting whether the overload occurs, and a reference value setting unit generating the reference value according to the reference value generating signal and providing the reference value to the comparator. | 07-30-2015 |
| 20150214722 | REVERSE BATTERY PROTECTION DEVICE AND OPERATING METHOD THEREOF - A reverse battery protection device and an operating method thereof are provided. The reverse battery protection device includes a signal generating unit measuring a voltage of a battery, and, when the measured voltage is not smaller than a reference voltage, generating an electrical signal, a signal converting unit converting the generated electrical signal into a DC voltage, and a switch unit switching to allow a current to flow between the battery and a converter, when the converted DC voltage is received. | 07-30-2015 |
| 20150213988 | TRIP DEVICE OF MOLDED CASE CIRCUIT BREAKER - Disclosed is a trip device of a molded case circuit breaker. The trip device includes a shooter configured to include a body and a rotating shaft which passes through the body, a double torsion spring coupled to both sides of the rotating shaft and configured to provide an elastic restoring force to enable the shooter to rotate, and a crossbar configured to include a hanger that contacts the hanging plate and limits a movement of the shooter. A hanging plate is provided at a lower portion of the body, and a hitting plate is provided at an upper portion of the body. | 07-30-2015 |
| 20150213982 | RELAY - Disclosed is a relay. The relay includes a first fixed contact connected to a power source, a second fixed contact separated from the first fixed contact, and connected to a load, and a moving contact configured to be brought into contact with or separated from the first fixed contact and the second fixed contact. The moving contact includes a first moving contact configured to be brought into contact with or separated from the first fixed contact and the second fixed contact and a second moving contact separated from the first moving contact, and configured to be brought into contact with or separated from the first fixed contact and the second fixed contact. Accordingly, the moving contact can be prevented from being separated from the fixed contact by an inter-electron repulsion. | 07-30-2015 |
| 20150213981 | ELECTROMAGNETIC RELAY - An electromagnetic relay includes a housing, a fixed contact provided within the housing, a movable contact movable to contact or be separated from the fixed contact, and a driving unit configured to drive the movable contact to be in contact with or separated from the fixed contact, and including a coil, a yoke disposed within the coil and having an inner section for forming a magnetic path inside and outside of the coil, a movable core disposed within the coil to be attractable by the inner section, and a shaft having one end connected to the movable core and another end connected to the movable contact, capable of facilitating an assembling process of a shaft and a movable core by eliminating a welding process. | 07-30-2015 |
| 20150213980 | ELECTROMAGNETIC RELAY - An electromagnetic relay includes a housing; a fixed contact provided within the housing; a movable contact disposed within the housing so as to be contactable to and separable from the fixed contact; a driving unit configured to drive the movable contact, and including a shaft having one end connected to the movable contact and a compression spring for applying an elastic force to the movable contact so as to be in contact with the fixed contact; and an arc protector including an arc shielding portion for shielding an arc, and a compression spring support portion formed to protrude from the arc shielding portion to support the compression spring, the compression spring support portion comprising a shaft accommodating portion for accommodating the shaft therein. Under such configuration, the number of required components can be reduced and generation of a gap can be prevented. | 07-30-2015 |
| 20150213000 | DATA DISPLAY APPARATUS AND METHOD FOR ENERGY MANAGEMENT SYSTEM - The present disclosure relates to a data display method and a data display apparatus for an energy management system. The data display method according to the present disclosure comprises receiving a table generation request signal for data received from a data acquisition and management system, receiving a table display form and selection information of sorting, receiving at least one layer according to a selected table display form, sorting and displaying the received data according to the input table display form and the input layer, sensing a sorting request signal for the displayed data, and re-sorting and displaying the displayed data based on the received sorting request signal. | 07-30-2015 |
| 20150212135 | CONNECTION DETECTING DEVICE FOR ELECTRIC VEHICLE CHARGER - A connection detecting device for an electric vehicle charger, which detects whether the vehicle charger is connected to the electric vehicle, is provided. The connection detecting device includes a connection unit connecting a coupler of the vehicle charger to the electric vehicle, a power supply unit supplying a voltage to the connection unit when being turned on, a first signal generation unit generating a first signal to turn on the power supply unit when the vehicle charger is connected to the electric vehicle, and a control unit determining whether the vehicle charger is connected to the electric vehicle on the basis of the voltage applied to the connection unit. The first signal generation unit is an open circuit through which a current does not flow, when the vehicle charger is disconnected from the electric vehicle. | 07-30-2015 |
| 20150212130 | THREE-PHASE WIRING DETECTION DEVICE AND COINCIDENCE PHASE DETECTION METHOD - Disclosed are a three-phase wiring detection device and a coincidence phase detection method. The three-phase wiring detection device and the coincidence phase detection method compare a power factor relationship between a three-phase voltage and a three-phase current, and determines whether a coincidence phase is coincident between the three-phase voltage and the three-phase current, thereby checking whether the coincidence phase is accurately coincident. Therefore, whether the coincidence phase is coincident between the three-phase voltage and the three-phase current can be checked, and a function of a reverse phase detector and a function of a coincidence phase checker can be implemented. Also, the three-phase voltage and the three-phase current can be accurately detected. | 07-30-2015 |
| 20150210300 | APPARATUS FOR ESTIMATING LATERAL FORCES OF RAILROAD VEHICLES - The present disclosure relates to an apparatus and a method for estimating a lateral force applied to a bogie due to contact between a wheel and a rail when a railroad vehicle drives in a curved section, the apparatus including: a lateral velocity estimation observer configured to calculate a lateral velocity estimate by estimating a lateral velocity based on a vertical acceleration, a lateral acceleration, a yaw velocity, and a wheel angular velocity of the railroad vehicle; and a lateral force estimation observer configured to calculate a lateral force estimate, by estimating a lateral force applied to a bogie of the railroad vehicle based on a steering angle of the railroad vehicle, a vertical force applied to the railroad vehicle, and a lateral velocity estimate calculated by the lateral velocity estimation observer. | 07-30-2015 |
| 20150210177 | CONTROLLING DEVICE FOR ELECTRIC VEHICLE CHARGER - Disclosed is a charging control device for use in an electric vehicle to control an internal charging device of the electric vehicle. An auxiliary battery supplies DC power. A power supply device change a level of a voltage of the DC power to supply power. A power supply control device controls the supply of the DC power to the power supply device. A power supply device control signal generation unit transmits a charging start signal to the power supply control device in the case where a charging start condition is satisfied. | 07-30-2015 |
| 20150207430 | TERMINAL CIRCUIT IN INVERTER - A terminal circuit in an inverter is disclosed, the terminal circuit including a photo-coupler configured to electrically insulate input/output signals, to receive, as input, an open collector output signal or a pulse output signal from a first port and to output the open collector output signal or the pulse output signal to a second port through a first output terminal, a transistor in which a base (B) terminal is connected to a second output terminal of the photo-coupler. And a bias resistor connected to a base (B) terminal of the transistor and to an emitter (E) terminal. | 07-23-2015 |
| 20150207325 | DEVICE AND METHOD FOR CONTROLLING HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM - A device for controlling a high voltage direct current (HVDC) transmission system is provided. The device includes: a communication unit communicating with a control device; a control unit obtaining a databack signal received through the communication unit, checking a data line error and a line connection error based on an obtained databack signal, and outputting a valve control signal based on the databack signal; and an output unit outputting the valve control signal to a valve control device based on control of the control unit. | 07-23-2015 |
| 20150200673 | METHOD OF OUTPUTTING POSITIONING PULSE BY PLC - A method of outputting a positioning pulse by a programmable logic controller (PLC) is provided. The method includes setting up the desired cycle of a pulse to be output; determining a number of needed clocks based on a number of system clocks and a desired frequency according to the desired cycle; determining a total number of needed clocks based on the number of needed clocks and the desired frequency; determining a clock difference based on the number of system clocks and the total number of needed clocks; determining a first number of setup clocks corresponding to a first output pulse in a certain cycle; determining a second number of setup clocks corresponding to pulses except for the first output pulse; and outputting a pulse based on the first number of setup clocks and the second number of setup clocks. | 07-16-2015 |
| 20150192631 | EARTH LEAKAGE CIRCUIT BREAKER - Disclosed is an earth leakage circuit breaker. The earth leakage circuit breaker is capable of determining an earth leakage signal applied thereto with high accuracy, by performing a trip operation by determining noise components included in the earth leakage signal, such as switching noise or harmonics, based on a determination signal generated by tracking the earth leakage signal. The earth leakage circuit breaker is capable of precisely determining whether to perform a trip operation with respect to an earth leakage signal applied thereto. The earth leakage circuit breaker is capable of preventing a malfunction due to a noise signal similar to an earth leakage signal. | 07-09-2015 |
| 20150188613 | APPARATUS FOR PROCESSING INTERMITTENT MESSAGE IN TRAIN SYSTEM - Disclosed is an apparatus for processing an intermittent message in a train system. The apparatus includes an antenna, a filter unit and a signal processing unit. The antenna receives an intermittent message signal transmitted through an intermittent loop installed on a rail line. The filter unit performs band pass filtering on the intermittent message signal, and separates the intermittent message signal into first data having a first frequency and second data having a second frequency. The signal processing unit generates data corresponding to an intermittent message by synchronizing the phase of the second data with that of the first data. | 07-02-2015 |
| 20150188475 | METHOD FOR CONTROLLING PARALLEL-CONNECTED INVERTERS - A method for controlling parallel-connected inverters is provided. The method includes ascertaining a detection scope of a predetermined PWM synchronization signal when a PWM synchronization signal is received, calculating a synchronization error of a PWM carrier at a PWM synchronization signal reception point, and compensating the synchronization error at a peak of the PWM carrier. | 07-02-2015 |
| 20150188460 | METHOD FOR CONTROLLING SYNCHRONOUS SWITCH CHANGE IN MEDIUM VOLTAGE INVERTER - A method for controlling synchronous switching in a medium voltage inverter is disclosed. The method includes lighting on a first lamp to notify that a switching operation is ready by ascertaining that the medium voltage inverter is in a normal operation, lighting on a second lamp to notify that a switching operation is under way when receiving an input of switching action, and lighting on a third lamp to notify that the switching operation is completed when the switching action is completed. | 07-02-2015 |
| 20150187522 | ELECTROMAGNETIC SWITCHING DEVICE - Disclosed is an electromagnetic switching device, including: a junction box having an accommodating space formed to be one side open by side plates and a bottom plate; and a relay having fixed contacts and movable contacts within an casing and detachable to and/or from the accommodating space, wherein the junction box includes a pair of protrusions which are protruded from the side plates to an opposite side to the accommodating space; wherein the relay includes a lever which is hinge-coupled to the casing and caught by the pair of protrusions; and wherein the lever is configured to press the relay toward the bottom plate when rotating in one direction, and to press the relay toward a direction to become distant from the bottom plate when rotating in opposite direction, thereby enabling the relay to be easily detachable from the junction box. | 07-02-2015 |
| 20150185711 | METHOD FOR CONTROLLING INVERTER - A method for controlling an inverter is provided, the method including, setting, as a first reference, a pressure data returned from the pressure sensor when a pre-PID ends, updating the first reference that is increased by a predetermined step to a second reference, determining an output frequency of the inverter by performing a PID control using the second reference, and determining an output frequency of the inverter by performing the PID using a third reference set up by the user when the second reference or feedback pressure data is equal to a set value. | 07-02-2015 |
| 20150180804 | METHOD FOR SETTING CAPACITY OF BUFFER - The present disclosure relates to method for setting capacity of buffer, the method including initializing a plurality of sub-buffers forming a main buffer (initializing step), receiving a storage frequency and a remaining capacity from the plurality of sub-buffers and comparing the storage frequency with the remaining capacity (comparison data reception step), determining whether a current storage frequency of the plurality of sub-buffers and a past storage frequency are equal (data comparison step), calculating an allocation capacity of the plurality of sub-buffers (set capacity calculation step), and re-setting the capacity of the plurality of sub-buffers using the allocation capacity calculated by the setting capacity calculation step (capacity re-setting step). | 06-25-2015 |
| 20150180541 | APPARATUS FOR POWER LINE COMMUNICATION - Disclosed is an apparatus for power line communication. More specifically, in order to solve a problem of the conventional art, in which the magnitude of power line communication signals exceeds a reference value allowed in the law, the apparatus controls a communication signal to be selectively output a communication target phase among phases of a three-phase power line. Accordingly, it is possible to maintain the magnitude of the output communication signal to be low. Further, it is possible to reduce distortion of a power signal, caused by the communication signal, and malfunction of other power facilities due to the distortion. Further it is possible to easily and simply perform initiation of the power line communication. | 06-25-2015 |
| 20150180478 | APPARATUS FOR SIMPLIFICATION OF INPUT SIGNAL - The present disclosure relates to an apparatus for simplification of input signal configured to simplify a process of microprocessor and to enhance a speed by transforming six input modes of 1-phase/2-input/1-multiplication mode, 1-phase/2-input/2-multiplication mode, CW/CCW mode, 2-phase/1-multiplication mode, 2-phase/2-multiplication mode and 2-phase/4-multiplication mode to a same shape according to types of encoder connected to a PLC high speed counter, and transmitting to the microprocessor, and by adding the six types of input modes to a logic gate circuit of a high speed counter input circuit. | 06-25-2015 |
| 20150180364 | DRIVING DEVICE OF SYNCHRONOUS RECTIFICATION APPARATUS - A driving device of a synchronous rectification apparatus is provided. The driving device includes a voltage detection part disposed on a power input terminal to detect a voltage value of a power inputted through the power input terminal, an adjustment part receiving the voltage value detected through the voltage detection part, the adjustment part adjusting the receive voltage value to output the adjusted voltage value, and a comparison part receiving the voltage value adjusted through the adjustment part into a positive terminal and a synchronous rectification starting value into a negative terminal, the comparison part outputting an command value of the synchronous rectification apparatus, which is obtained by comparing the received voltage value with the synchronous rectification starting value. | 06-25-2015 |
| 20150179376 | TRIP DEVICE FOR CIRCUIT BREAKER - A trip device for a circuit breaker comprises a first terminal; a second terminal; and a bimetal in which a slot with one side opened is formed at one end of the bimetal, the one end is divided into a first end portion and a second end portion, the first end portion is connected to the first terminal, and the second end portion is connected to the second terminal, wherein the bimetal generates heat with a current which flows between the first end portion and the second end portion, and a heating amount of the bimetal is changed based on a length of the slot. Accordingly, a desired rated current can be set, the bimetal can be prevented from being damaged by a fault current, and the fault current can be effectively detected by obtaining a sufficient amount of heat and a bending amount of the bimetal. | 06-25-2015 |
| 20150179375 | TERMINAL STRUCTURE OF MAIN CIRCUIT PART OF VACUUM CIRCUIT BREAKER - A terminal structure of main circuit part of vacuum circuit breaker includes a cylindrical terminal having a circular heat fin unit at its inner surface and an air-flow path formed perpendicular to each other at upper and lower portion thereof and a bar type terminal heat diffusion fins at upper, lower and side surfaces thereof to facilitate heat discharging generated at an inner space of the main circuit of the vacuum circuit breaker. | 06-25-2015 |
| 20150179374 | SAFETY SHUTTER OF VACUUM CIRCUIT BREAKER - The present invention relates to a safety shutter of a vacuum circuit breaker, and more particularly, to a safety shutter of a vacuum circuit breaker which is mounted on a cradle of a drawable type vacuum circuit breaker and opened or closed when a main body is retracted or pulled out to protect the safety of users from a charging part. | 06-25-2015 |
| 20150179360 | INSTANT TRIP DEVICE OF CIRCUIT BREAKER - An instant trip device of a circuit breaker comprises a magnet; a supporter; an amateur provided between the magnet and the supporter and including a rotation center portion and a rotating part is disposed to be rotatable with respect to the rotation center portion; and an amateur spring configured to apply an elastic force in a direction where the rotating part of the amateur becomes farther away from the magnet, wherein a groove of which one side is opened is formed at the supporter to support the rotation center portion, wherein a boss is formed at the rotation center portion to be inserted into the groove, and wherein the amateur spring is an extension spring in which one end of the amateur spring is supported by a first hanger included in the supporter, and the other end is supported by a second hanger included in the rotating part. | 06-25-2015 |
| 20150179359 | MAGNETIC CONTACTOR - Disclosed is a magnetic contactor. The magnetic contactor includes a frame, a bobbin provided in the frame, and configured to include a hollow part, a movable core movably inserted into the hollow part in an axial direction, a yoke disposed at the outer surface of the bobbin to be separated from the coil and to face each other, and configured to act as a fixed core, and a manipulating circuit part disposed at the outer surface of the bobbin in parallel with a moving direction of the movable core to intersect the yoke. The coil is wound around an outer surface of the bobbin. Accordingly, a coil having a broad rated voltage range is used. Also, a structure of a product is simplified, and a space is broadly used. | 06-25-2015 |
| 20150178288 | METHOD OF PLAYING OPERATION RECORDS OF ENERGY MANAGEMENT SYSTEM - A method of playing an operation record of an energy management system (EMS) is provided. The method includes setting a play section; acquiring operation record data corresponding to a set play section; playing acquired operation record data; determining whether an additional event occurs during the playing of the operation record data; checking an execution file corresponding to the additional event when it is determined that the additional event occurs; and playing a checked execution file along with the operation record data. | 06-25-2015 |
| 20150177767 | ENERGY MANAGEMENT SYSTEM AND DATA SYNCHRONIZATION DEVICE - An energy management system is provided. The energy management system includes a single line diagram creation server creating single line diagram data and distributing created single line diagram data and single line diagram data information to any one of a workstation or a web server; a workstation obtaining the single line diagram data from the single line diagram creation server or a web server; and the web server performing communication between web servers in respective dispatching centers, and sharing and synchronizing the single line diagram data when the communication is performed. | 06-25-2015 |
| 20150177766 | DISPATCHER TRAINING SIMULATING DEVICE AND OPERATION METHOD THEREOF - A dispatcher training simulating device includes an energy management system (EMS) actual measurement data loader configured to load EMS actual measurement data to the dispatcher training simulating device, an EMS actual measurement data initializing unit configured to calculate a power flow by adjusting a generator output in the loaded EMS actual measurement data, and generate initialized EMS actual measurement data based on whether the calculated power flow converges on a predetermined value, and a dispatcher training simulation providing unit configured to provide a dispatcher training simulation based on the initialized EMS actual measurement data. | 06-25-2015 |
| 20150175385 | BOBBIN - This specification relates to a bobbin wound with a wire. The bobbin disclosed herein includes a winding main body on which a wire is wound, and a flange section that protrudes from both end portions of the winding main body to form an accommodation space of the wire, wherein the winding main body includes a first winding portion and a second winding portion that are arranged such that central axes thereof are aligned with each other, and configured to be stepped from each other due to a difference of diameters thereof, and a stopping jaw that protrudes from a winding portion with a relatively great diameter of the first winding portion and the second winding portion, whereby the wire can be prevented from being fallen down or loosened while being wound. | 06-25-2015 |
| 20150175021 | POWER CONVERSION DEVICE - A power conversion device for charging first and second batteries is provided. The power conversion device includes an input unit, a first power conversion unit, a second power conversion unit, a third power conversion unit, and a switching unit connecting the first power conversion unit to the second power conversion unit in the first operation mode according to a control signal supplied from the outside, the switching unit connecting the second power conversion unit to the third power conversion unit in the second operation mode according to the control signal supplied from the outside. | 06-25-2015 |
| 20150162866 | SUPPORTING DEVICE FOR SOLAR PANEL - The present disclosure relates to a photovoltaic system and, more particularly, to a supporting device for a solar panel employed in a photovoltaic system. A supporting device for a solar panel includes a buoyant member including an upper body in which a plurality of protrusions are formed upwardly and first and second props are formed on the protrusions to prop a solar panel, respectively, and a lower body in which a wing part is formed to be protruded from the side thereof and a lower surface is formed to be protruded downwardly, and a connector formed to have a box shape and connecting the buoyant members in a vertical direction or horizontal direction, wherein the buoyant members are coupled to the connector as the wing parts are coupled to the connector. | 06-11-2015 |
| 20150160288 | POWER DEVICE INCLUDING CURRENT TRANSFORMER AND METHOD FOR COMPENSATING OF CURRENT TRANSFORMER - A power device having a current transformer according to an embodiment includes: first to Nth current transformers; an integrated measurement panel connected to the first to Nth transformers and configured to measure actual current values of locations where the first to Nth transformers are installed using current values detected by the first to Nth transformers, wherein the integrated measurement panel stores compensation values for compensating errors of linearity characteristics of the first to Nth current transformers, and measures the actual current values by applying the stored compensation values. | 06-11-2015 |
| 20150156901 | INVERTER FOR ELECTRIC VEHICLE - Provided is an inverter for an electric vehicle. The inverter for the electric vehicle includes a heat sink, a power semiconductor module disposed on an upper portion of the heat sink, a control board connected to the power semiconductor module, a light source coupled to the control board, a case coupled to the upper portion of the heat sink to cover the power semiconductor module and the control board, and an indicator coupled to the case to transmit light emitted from the light source therethrough. The indicator is double injection-molded to the case. | 06-04-2015 |
| 20150156896 | ELECTRIC DEVICE FOR ELECTRIC VEHICLE - An electric device for an electric vehicle is provided. The electric device includes a lower case, an upper case coupled to an upper portion of the lower case, a first printed circuit board (PCB) fixed to the lower case and comprising a first connector, and a second PCB fixed to the upper case and comprising a second connector. The first connector and the second connector are vertically disposed to correspond to each other, and the first connector is coupled to the second connector by coupling the lower case to the upper case to connect the first PCB to the second PCB. | 06-04-2015 |
| 20150156060 | BIDIRECTIONAL PACKET TRANSFER FAIL-OVER SWITCH FOR SERIAL COMMUNICATION - Disclosed is a bidirectional packet transfer fail-over switch for serial communication. The bidirectional packet transfer fail-over switch for serial communication includes a memory configured to divide packet data, which is transmitted or received for bidirectional communication between a plurality of communication devices, in units of certain data, and store the divided data, and a control unit configured to receive a trigger signal, indicating whether the packet data is received, from the memory, determine a priority according to an order where the packet data is received, and transmit the packet data to another communication device. | 06-04-2015 |
| 20150155815 | APPARATUS FOR CONTROLLING INDUCTION MOTOR - An apparatus for controlling an induction machine is disclosed, wherein a magnitude of a current outputted to the induction machine to an inverter is determined by the apparatus to determine a voltage amount that compensates the command voltage in response to the magnitude of the current, and a voltage compensation amount is added to a command voltage determined from a voltage-frequency relationship according to a relevant voltage compensation amount to output a final command voltage. | 06-04-2015 |
| 20150155773 | APPARATUS AND METHOD FOR CONTROLLING INVERTER - An apparatus and a method for controlling an inverter are disclosed. The apparatus determines a 3-phase current by receiving a 2-phase current from a leg-shunt resistor arranged at an emitter terminal of a lower switching element in an inverter unit of an inverter, and determines whether there is an abnormality generated in the 3-phase current, to correct the abnormality in the current. | 06-04-2015 |
| 20150155692 | BUSBAR COUPLING DEVICE ASSEMBLY - Provided is a busbar coupling device. The busbar coupling device includes: a plate including a first side and a second side disposed opposite to each other; a first end wall part protruding and extending in a direction that the first side faces at a first end part in a length direction of the plate; a first protrusion part disposed at the plate, spaced from the first end wall part, and protruding in the direction that the first side faces; a second end wall part protruding and extending from a second end part disposed opposite to the first end part to a direction that the second side faces in the length direction of the plate; and a second protrusion part disposed at the plate, spaced from the first end wall part, and protruding in the direction that the first side faces. | 06-04-2015 |
| 20150155066 | ELECTRICAL CONTACT MATERIALS AND METHOD FOR PREPARING THE SAME - Disclosed are electrical contact materials and a method for preparing the same. The electrical contact material includes (i) one or more kinds of metals selected from the group consisting of silver (Ag), copper (Cu) and gold (Au), and an alloy of nickel (Ni); and (ii) carbon nano tubes (CNTs) coated with Ag nanoparticles, Ag plated CNTs, or Ag nanowires, or (i) one or more kinds of metals selected from the group consisting of Ag, Cu, Ni and Au; (ii) a metal oxide that is cadmium oxide, indium oxide, tin oxide, zinc oxide or mixture thereof; and (iii) CNTs coated with Ag nanoparticles, Ag plated CNTs, or Ag nanowires. Accordingly, it is possible to reduce the content of high-priced Ag and to obtain excellent electrical and mechanical properties. | 06-04-2015 |
| 20150151695 | INVERTER FOR ELECTRIC VEHICLE - An inverter for an electric vehicle is provided. The inverter for an electric vehicle, which controls an RPM of a motor for the electric vehicle, the inverter including a busbar connected to a power semiconductor module for supplying current, a current sensor measuring the current passing through the busbar, and a control board on which the current sensor is mounted, the control board controlling the motor for the electric vehicle according to a result measured by the current sensor. The busbar is disposed to vertically pass through the current sensor and control board. | 06-04-2015 |
| 20150151643 | ELECTRIC VEHICLE CHARGER - Provided is an electric vehicle charger. The electric vehicle charger includes a lower case including a front partition wall having a cable penetration cutoff part that is cut to pass in forward and backward directions, an upper case including a front partition wall having a cable penetration cutoff part that is cut to pass in forward and backward directions, a sealing part having at least one portion disposed between the upper case and the lower case, and a cable passing though a portion of the upper case and a portion of the lower case, the cable being coupled between the upper case and the lower case | 06-04-2015 |
| 20150149665 | POLLING METHOD OF COMMUNICATION SYSTEM - The present disclosure relates to a polling method of communication system configured to reduce a polling time by receiving responses from a plurality of auxiliary devices using one time of response request signal by a main device during polling, the method including, requesting, by a main device, transmission of response request signals from a plurality of auxiliary devices connected to the main device (request step),
| 05-28-2015 |
| 20150146764 | REPEATER FOR POWER LINE COMMUNICATION AND REPEATING METHOD THEREOF - The present disclosure relates to a repeater for power line communication, capable of preventing a ping-pong phenomenon and a loss of data packet and improving communication reliability and communication speed by allowing a power line communication terminal to add its repeater number in a received data packet for transmission, and a repeating method thereof. A repeater for power line communication according to the disclosure comprises a power line communication concentrator to execute communication through a power line, and a plurality of power line communication terminals including a plurality of repeating power line communication terminals each having a repeating function and a repeater number set therefor, and configured to execute the communication with the power line communication concentrator through the power line, wherein the plurality of repeating power line communication terminals receive data packets, and repeat the data packets by adding their own repeater numbers in the data packets, respectively. | 05-28-2015 |
| 20150142226 | APPARATUS FOR CONTROLLING SPEED IN RAILWAY VEHICLES - An apparatus for controlling speed in railway vehicles is disclosed, the apparatus estimates a future train speed and determines a control input (first speed control) configured to control a train speed based on a TTSLC {Time-To-Speed-Limit Crossing, a time taken by a train from a current time to exceed an ATP (Automatic Train Protection) speed profile, which is an ATP speed limit}, and determines a control input (second speed control) configured to control the train speed based on a difference between the ATP speed profile and an actual train speed, whereby the first speed control or the second speed control is selected in response to the TTSLC and outputted to the train. | 05-21-2015 |
| 20150139275 | MAIN CIRCUIT PART OF VACUUM CIRCUIT BREAKER WITH SELF-POWERED TEMPERATURE SENSOR ASSEMBLY - The present invention relates to a main circuit part of a vacuum circuit breaker, and more particularly, to a main circuit part of a vacuum circuit breaker with a temperature sensor. The main circuit part of a vacuum circuit breaker with a self-powered temperature sensor assembly includes: a self-powered temperature sensor module; and a support bracket enclosing and supporting the self-powered temperature sensor module. | 05-21-2015 |
| 20150138855 | APPARATUS FOR CONTROLLING PARALLELED INVERTER - An apparatus for controlling paralleled inverter is disclosed. In the apparatus for controlling paralleled inverter, one synchronization signal is shaped by at least two inverters to respectively transmit a voltage command and an operation command. | 05-21-2015 |
| 20150138854 | APPARATUS AND METHOD FOR DETECTING OUTPUT PHASE DEFICIENCY IN INVERTER - An apparatus and a method for detecting phase deficiency in an inverter is provided, the method including deciding whether a sector of the output current is a sector where current detection is possible based on switching operation status of the switching element in the inverter, maintaining a phase deficiency variable when deciding the current detection in the sector of the output current to be impossible, adding a count to a phase deficiency variable to accumulate when deciding the current detection in the sector of the output current to be possible and deciding the output current to be within a phase deficiency band, and determining as phase deficiency when the phase deficiency variable is greater than a prescribed detection level. | 05-21-2015 |
| 20150138849 | PRE-CHARGING CIRCUIT OF INVERTER - A pre-charging circuit of inverter is disclosed, the pre-charging circuit of inverter including a relay arranged between an output node of the rectifier and an input node of the DC-link capacitor, and a pre-charging resistor arranged between an output node of the rectifier and an input node of the inverter unit, whereby a degree of freedom for PCB design can be obtained. | 05-21-2015 |
| 20150138683 | FAULT CURRENT LIMITER - A fault current limiter is provided. According to an embodiment of the present disclosure, the fault current limiter includes a switch whose contact point is opened when a fault current occurs; a current limiting element configured to limit the fault current when the fault current occurs; and a diode being serial-connected to the current limiting element, wherein a breakdown voltage of the diode is higher than a voltage drop by an impedance of the switch when a normal current flows. | 05-21-2015 |
| 20150137916 | CIRCUIT BREAKER WITH INPUT LOAD INCREASING MEANS - A circuit breaker comprises a switching mechanism that including a linkage with a drive joint that is mounted to be rotatable around a rotation axis by a driving force, wherein, during the ON operation, an axis formed by the rotation axis and the point of action of the driving force makes an acute angle with the line of action of the driving force, so that the drive joint causes the tangential force of the driving force to act as input load, at least one hinge part of the linkage is configured in a way that the connecting pin is movably hinged to the long hole-shaped hinge hole, and at least one hinge part of the linkage causes the tangential force to increase by changes in the acute angle as the connecting pin moves from a first side of the long hole-shaped hinge hole to a second side. | 05-21-2015 |
| 20150136578 | CIRCUIT BREAKER - A circuit breaker includes: fixed contact points; and a moving contact assembly. The moving contact assembly includes: a shaft; a moving contact that is held in the shaft; and springs that apply torque to the moving contact. The shaft includes: stopping faces that are formed in a direction opposite to the direction in which the moving contact rotates; and guiding faces that are curved from the stopping faces. The moving contact includes: first surfaces that are formed on the radius of rotation of the moving contact; and sliding surfaces that are located at an angle to the first surfaces and slanted toward the center of rotation with respect to the line of action of a tangential force of torque at the points of contact with the guiding faces. | 05-21-2015 |
| 20150130569 | MAGNETIC CONTACTOR - Disclosed is a magnetic contactor. A free space in which a DC converting circuit is provided is in a product can be secured by changing shapes of the movable core and the fixed core, and thus, in association with a low-capacity product, external AC power may be converted into DC power even without enlarging a size of a product. Also, a normal position member may be included in a movable core, and may induce the movable core to the original position, and thus, a mechanical mechanism relationship between the switch manipulating part included in the movable core and the other element is maintained. | 05-14-2015 |
| 20150130567 | OVERCURRENT RELAY AND MOLDED CASE CIRCUIT BREAKER WITH THE SAME - An overcurrent relay and a molded case circuit breaker (MCCB) including the same are provided. The MCCB includes: a switching mechanism unit; an overcurrent relay; a trip mechanism, wherein the overcurrent relay includes: a case body; a case cover coupled to the case body; a control unit installed within the case body and having an electronic circuit board; and a plurality of setting knobs disposed to be spaced apart from one another on the electronic circuit board, having an indication unit exposed to the outside to indicate a current reference value and a trip operation time marked on the case cover, respectively, and configured to be rotatable, respectively. | 05-14-2015 |
| 20150129555 | MOLDED CASE CIRCUIT BREAKER - A molded case circuit breaker (MCCB) includes a case, an interrupter assembly, an exhaust guide part, an exhaust cover, a sealing groove and a sealing projection. The interrupter assembly is mounted inside the case, and has an arc gas exhaust port to exhaust an arc gas generated inside the case. The exhaust guide part is disposed between the interrupter assembly and the terminal part, and has an exhaust chamber therein to provide an arc gas passage between the arc gas exhaust port and a vent chute of the terminal part. The exhaust cover is mounted to the case in a structure covering the exhaust guide part, to seal the arc gas passage. The sealing groove is formed in an inner surface of the exhaust cover. The sealing projection is formed on the arc gas exhaust port of the interrupter assembly, to be inserted and coupled into the sealing groove. | 05-14-2015 |
| 20150129553 | MOLDED CASE CIRCUIT BREAKER - Disclosed is a molded case circuit breaker. The molded case circuit breaker includes include: a case; an interrupter assembly installed in the case, and provided with an arc gas outlet; an exhaustion guiding portion disposed between the interrupter assembly and the terminal portion; an exhaustion cover mounted to the case, with a structure to cover the exhaustion guiding portion; and exhaustion guides spaced from each other in the exhaustion guiding portion, in a direction perpendicular to an arc gas discharge direction, in a state where the gas divergence portion is disposed therebetween, the exhaustion guides forming the arc gas passage together with the gas divergence portion. Under such configuration, arc gas discharged out of the arc gas outlet can be rapidly discharged to outside through the exhaustion guides, without an eddy current. | 05-14-2015 |
| 20150129551 | MOLDED CASE CIRCUIT BREAKER - Disclosed is a molded case circuit breaker. The molded case circuit breaker includes a case; an interrupter assembly installed in the case, and provided with an arc gas outlet for discharging arc gas generated from inside of the interrupter assembly to outside; an exhaustion guiding portion disposed between the interrupter assembly and the terminal portion, and provided with a discharge chamber therein, to thus provide an arc gas passage between the arc gas outlet and a vent chute of the terminal portion; and an exhaustion cover mounted to the case with a structure to cover the exhaustion guiding portion, to thus block the arc gas passage. | 05-14-2015 |
| 20150129403 | HANDLE OPERATING DEVICE FOR CIRCUIT BREAKER - The present disclosure relates to a handle operating device for a circuit breaker, and there is provided a handle operating device including a connecting rod configured to transfer power for operating a manual operating handle that manually operates the on/off of a circuit breaker from the outside; a movable frame connected to the connecting rod to be movably coupled to an outer surface of a circuit breaker case in a direction parallel to the operating direction of the manual operating handle; a movable member provided at the movable frame in an interlocking manner to move the manual operating handle; a slot hole is formed on the moving member in an inclined manner from the moving direction of the manual operating handle; and a fastening member fastened to the movable member and movable frame through the slot hole. | 05-14-2015 |
| 20150129400 | MOLDED CASE CIRCUIT BREAKER - A molded case circuit breaker, includes: a case; a power side terminal portion and a load side terminal portion formed at two sides of the case; a mounter installed at the terminal portion with a structure to enclose a terminal connector connected to the terminal portion, wherein the mounter includes: a mounting surface for mounting the terminal connector; insulation surfaces extending from two side edges of the mounting surface, and spaced from each other; and a cover surface having an opening, and formed on outer side surfaces of the insulation surfaces so as to cross the insulation surfaces and the mounting surface. Under such configuration, a regulated insulation distance can be obtained, and the terminal connector can be supported more stably. | 05-14-2015 |
| 20150129397 | SWITCHBOARD - Disclosed is a switchboard. The switchboard includes a switchboard case with a built-in circuit breaker, a door mounted on the switchboard case in a hinge structure to be opened or closed and configured to include a door hook including an inclined surface at a front end, an external manipulation handle provided at an outer side of the switchboard case and configured to manually, externally manipulate a switch-on or off operation of the circuit breaker, and a catching member disposed in the switchboard case to be contactable with the inclined surface of the door hook. The catching member rotates by contacting the inclined surface of the door hook according to a closing operation of the door, and a locked state of the door is maintained by catching the door hook on one side corner of the catching member. | 05-14-2015 |
| 20150123751 | CIRCUIT BREAKER - A vacuum interrupter includes a fixed contact and a movable contact; a driving unit including a main shaft and a plurality of links interlocked with the main shaft, to supply a driving force to open and close the vacuum interrupter; a power transmission unit to transmit a driving force of the driving unit to the movable contact; an over-current relay to detect a fault current and to output a trip signal to break a large-scaled current conduction; a trip unit to generate and transmit a mechanical operation force to the driving unit when a trip signal is output from the over-current relay; and a Thomson drive including a Thomson coil and a repulsive plate, to rotate the main shaft to an opening position or to transmit the trip signal to the trip unit, to promptly breaking a fault current. | 05-07-2015 |
| 20150123644 | TRANSFORMER FOR POWER LINE COMMUNICATION - Disclosed is a transformer for power line communication, capable of performing power line communication without being influenced by voltage attenuation due to voltage conversion. The transformer for power line communication includes: a transforming unit configured to convert a high primary voltage into a low secondary voltage, or convert a low secondary voltage into a high primary voltage; a separation unit configured to separate a data signal from a primary voltage input thereto; and a coupling unit configured to couple the data signal with the low secondary voltage. | 05-07-2015 |
| 20150123471 | APPARATUS FOR CONTROLLING LDC IN ELECTRIC VEHICLE - Embodiments provide an apparatus controlling a low voltage DC-DC converter (LDC) in an electric vehicle that enables the LDC to autonomously wake up and operate when at least one of an ignition IGN signal and other electric components linked to the LDC is in the ON state and enables the LDC to recognize that other electric components linked to the LDC are all in the OFF state, and autonomously operate in a power-off state when other electric components linked to the LDC are all in the OFF state. | 05-07-2015 |
| 20150122626 | CIRCUIT BREAKER - A circuit breaker includes: a main body housing circuit-breaking parts; a terminal portion exposed outside the main body; a lug-type terminal block attached to the terminal portion and connecting a wire to the terminal portion; and an insulating member provided between the lug-type terminal block and the main body. | 05-07-2015 |
| 20150121015 | DEVICE AND METHOD FOR PROCESSING MESSAGE - Embodiments provide a device and method for processing messages according to a priority order and for reducing a message processing time when a response event occurs, in a PLC communication module. | 04-30-2015 |
| 20150115972 | APPARATUS AND METHOD FOR DIAGNOSING MALFUNCTION OF HIGH VOLTAGE RELAY DEVICE - The apparatus for diagnosing malfunction of a high voltage relay includes: first and second relays configured to connect or disconnect a battery and a circuit using the battery as a power source in each electrode; a voltage measuring unit configured to measure a first voltage between a battery side terminal or a circuit side terminal, among terminals of the first relay, and a circuit side terminal or a battery side terminal, among terminals of the second relay, and measure a second voltage between the battery side terminals or between the circuit side terminals; and a controller configured to determine whether the first or second relay malfunctions based on the first and second voltage values measured by the voltage measuring unit by controlling connection and disconnection of the first or second relay. | 04-30-2015 |
| 20150115863 | MOTOR STARTER SYSTEM AND METHOD FOR OPERATING SAME - A motor starter system and a method for operating same are disclosed. According to an embodiment of the present invention, reliability of a motor protection function during an overcurrent is improved by automatically controlling the on/off state of an electromagnetic contactor using an analog sensor value outputted from an external sensor. In addition, the present invention can receive an external sensor value through a connected upper monitoring device, monitor, in real time, the motor starter state, and transmit a control command for directly controlling the on/off state of the electromagnetic contactor, and thus enables excellent operation, integrated lifetime prediction, and motor load management. Furthermore, the present invention can reduce wiring work and a cost thereof and maximizing the use of space more than when controlling the electromagnetic contactor by using the I/O of a PLC. | 04-30-2015 |
| 20150115858 | APPARATUS FOR COMPENSATING PHASE ERROR IN INVERTER OUTPUT VOLTAGE - A phase compensation apparatus in an inverter output voltage in a system is provided, whereby performance of an inverter can be enhanced by compensating a time delay of measured voltage of inverter output voltage detection unit. | 04-30-2015 |
| 20150113363 | COMMUNICATION DEVICE AND COMMUNICATION METHOD - A method for a first communication device transmitting data to a second communication device, according to one embodiment of the present invention, comprises the steps of: the first communication device generating a safety unique identifier by using a unique identifier of the first communication device and a unique identifier of the second communication device, in order to confirm the validity of connection between the first communication device and the second communication device; the first communication device calculating a data error detection code for detecting an error by using the safety unique identifier and the data; the first communication device generating a packet comprising the data and the data error detection code; and the first communication device transmitting the packet to the second communication device. | 04-23-2015 |
| 20150113078 | COMMUNICATION DEVICE AND COMMUNICATION METHOD - A method for a first communication device transreceiving a message with a second communication device, according to one embodiment of the present invention, comprises the steps of: the first communication device confirming a user value of the second communication device; the first communication device comparing the user value of the second communication device that is confirmed to a user value of the first communication device; and the first communication device establishing either the first communication device or the second communication device as an initiator having initiative for communication and establishing the other as a responder not having initiative for communication, depending on the result of the comparison. | 04-23-2015 |
| 20150112534 | DATA PROCESSING DEVICE OF ELECTRIC VEHICLE - A device for processing data generated and processed in an electric vehicle is provided. The electric vehicle includes an engine, a motor connected to the engine and generating a driving torque, and an electronic control unit (ECU) controlling an operation of the engine, detecting a driving request signal, and including a plurality of controller for processing data generated on the basis of the driving request signal, wherein the ECU allows each of the plurality of control units to process the data on the basis of information on the data. | 04-23-2015 |
| 20150109713 | MAGNETIC CONTACTOR - Disclosed is a magnetic contactor. The magnetic contactor includes a frame, a holder, a movable core, a bobbin, a fixed core coupled to a side of the bobbin and configured to absorb the movable core with a magnetic force, an elastic member provided between the holder and the bobbin, a b-contact switch configured to sense a closing completion time of the movable contact by using a mechanical mechanism relationship with the movable core, an electronic circuit part configured to receive a sensing signal from the b-contact switch and limit a current applied to the coil, and a switch manipulation member provided at one end of the movable core and configured to operate the b-contact switch. | 04-23-2015 |
| 20150109091 | TRIP DEVICE FOR CIRCUIT BREAKER - A trip device for a circuit breaker includes: a crossbar rotatably installed to perform the trigger function; and bimetal that is curved upon the occurrence of an abnormal current and presses and rotates the crossbar by means of a gap adjustment member. The crossbar is movable in the direction of a rotating shaft of the crossbar, and the gap adjustment member is attached to and detached from either the crossbar or the bimetal at varying angles so that a contact surface is parallel or at an angle to the direction of movement of the crossbar. | 04-23-2015 |
| 20150108932 | APPARATUS FOR RESTARTING MEDIUM VOLTAGE INVERTER - An apparatus for restarting a medium voltage inverter is disclosed, wherein the inverter changes a voltage or a frequency outputted to a motor in response to an input voltage of the motor and a rotor speed of the motor and a predetermined voltage-frequency ratio. | 04-23-2015 |
| 20150107981 | CIRCUIT BREAKER AND PRODUCTION METHOD OF PIN FOR CIRCUIT BREAKER'S SWITCHING MECHANISM - A circuit breaker according to the present disclosure may include a movable contact configured to be brought into contact with or separated from the stationary contact; and a switching mechanism configured to switch the movable contact, wherein the switching mechanism includes a shaft rotatably installed therein; a transfer link configured to transfer a driving force from the shaft to the movable contact; and a pin configured to hinge-couple the shaft to the transfer link and insulate them from each other, and the pin is installed with a wear resistant member at a portion brought into contact with the shaft. | 04-23-2015 |
| 20150107972 | TRIP DEVICE FOR CIRCUIT BREAKER - A trip device for a circuit breaker disclosed herein includes a first terminal connected to a power source side, a second terminal connected to a load side, and a bimetal having one side connected with the first terminal and the other side connected with the second terminal, such that a current can flow therethrough, wherein the bimetal comes in surface-contact with at least one of the first terminal and the second terminal, with interposing an arc-resistive member therebetween. | 04-23-2015 |
| 20150107091 | GAP ADJUSTING METHOD IN TRIP MECHANISM OF MOLDED CASE CIRCUIT BREAKER - Disclosed is a gap adjusting method which easily adjusts a gap between a bimetal and a crossbar by using a gap adjusting block and an adjusting screw in a trip mechanism of a molded case circuit breaker without a separate additional device. The gap adjusting method in the trip mechanism of the molded case circuit breaker includes setting a reference gap between a crossbar and a bimetal, measuring a total resistance of the trip mechanism and a trip stroke of a switching mechanism to set a compensation gap, placing a gap adjusting block on a position separated from a crossbar by a gap based on the sum of the reference gap and the compensation gap, rotating an adjusting screw assembled with the bimetal to contact the adjusting screw with the gap adjusting block, and adhering the adjusting screw to the bimetal. | 04-23-2015 |
| 20150105868 | EVENT INPUT MODULE - Disclosed is an event input module, wherein the event input module receives time information which is an IRIG-B signal of a predetermined method from an outside time provider, allocates the time information to a detected event and determines event generation information. | 04-16-2015 |
