Patent application number | Description | Published |
20130097273 | ETHERCAT-BASED NETWORK SYSTEM AND OPERATION METHOD THEREOF - An EtherCAT-based network system configured to change a PDO list set, and an operation method thereof are provided, the system including at least one or more slave devices, a master device configured to connect and operate the slave device in response to an operating transmission PDO list or an operating reception PDO list provided from outside, and a host computer configured to extract the operating transmission PDO list or the operating reception PDO list from information file of the slave device and provide to the master device, wherein the information file includes at least one of identity information of the slave device, PDO list item changeable information, at least one or more transmission PDO list, and at least one or more reception PDO list. | 04-18-2013 |
20130103225 | TRAIN SPEED MEASURING DEVICE AND METHOD - Provided are a train speed measuring device and method. The train speed measuring device includes: at least one first tachometer disposed at an axle of a trailer car and for outputting a pulse signal according to a wheel revolution of the trailer car; at least one second tachometer disposed at an axle of a motor car and for outputting a pulse signal according to a wheel revolution of the motor car; at least one speed measuring unit for measuring speed values on the basis of pulse signals outputted from the at least one first tachometer and the at least one second tachometer; and a speed calculating unit for calculating the speed of the train on the basis of the measured speed values. | 04-25-2013 |
20130116843 | OUTAGE SCHEDULE MANAGEMENT APPARATUS AND METHOD IN EMS - An outage schedule management apparatus and a method are provided, wherein a topology change is executed in response to an outage schedule set up by a user input, and a validity determination is executed to system operation standard to approve an outage. | 05-09-2013 |
20130134782 | SOLAR DEVICE - A solar device is provided. The solar device includes a solar module configured to absorb solar energy to convert the solar energy to electrical energy, a DC converter configured to detect an input voltage output from the solar module and outputs a DC voltage corresponding to a maximum power point through the detected input voltage, an interface unit configured to transmit data including the input voltage detected from the DC converter and the DC voltage corresponding to the maximum power point, a data combiner configured to combine and transmit data on the solar module with the data received from the interface unit, a data synthesizer configured to remove a DC voltage offset from the data received from the data combiner, and a data controller configured to track a maximum power point using data from which the DC voltage offset has been removed. | 05-30-2013 |
20130134941 | POWER SUPPLY SYSTEM FOR ELECTRIC VEHICLE AND CONTROL METHOD THEREOF - A power supply system for EV and a control method thereof are provided, the system including a high voltage battery formed with a plurality of battery cells and generating a power driving source to a motor of the EV, and a low voltage battery generating a power driving source for electrical load, and an OBC (On-Board-Charger) selectively charging a high voltage battery or a low voltage battery using an externally-supplied AC power source based on an output voltage level of the low voltage battery. | 05-30-2013 |
20130138675 | METHOD OF MANAGING PROGRAM FOR ELECTRIC VEHICLE - Provided is a method of managing a program for an electric vehicle. The method of managing the program for the electric vehicle include reading metadata of an operating program for an electronic subassembly equipped in an electric vehicle, reading metadata of a parameter corresponding to the operating program, comparing the metadata of the operating program with the metadata of the parameter, and updating the parameter or executing the operating program according to comparison results. | 05-30-2013 |
20130142302 | INPUT CIRCUIT IN HIGH SPEED COUNTER MODULE IN PLC - An input circuit in high speed counter module for PLC is provided, the input circuit being configured such that various types of pulse signals are changed to a single type of pulse signal and transmitted to an MPU, whereby the type of input pulse is checked or an operation of checking addition/deduction is omitted to increase an interrupt process speed. | 06-06-2013 |
20130146397 | ELEVATOR CONTROLLING METHOD, ELEVATOR CONTROLLING DEVICE, AND ELEVATOR DEVICE USING THE SAME - In one embodiment, an elevator controlling method includes calculating the positional value of an elevator driving motor the every first cycle; generating a control signal every third cycle to control the motor based on the calculated positional value and the rotational speed of the motor calculated every second cycle; and controlling the driving power source of the motor based on the generated control signal. | 06-13-2013 |
20130153538 | ARC EXTINGUISHING APPARATUS FOR RING MAIN UNIT - An arc extinguishing apparatus for a ring main unit includes: a housing; a plurality of fixed contactor assemblies fixed to be protruded toward the center in the housing and formed by inserting a permanent magnet for arc extinguishing by a magnetic force between a pair of main circuit fixed contacts; a plurality of earthing fixed contactors fixed to be protruded toward the center in the housing and installed to be spaced apart from the fixed contactor assemblies at a predetermined angle; a 3-phases common rotational shaft installed to be rotatable at the center of the housing; and a rotatable movable contactor assembly having a plurality of puffer guide plate sections having openings with a narrow opening width to accelerate the velocity of flow of insulating gas to extinguish arc by blowing it, and rotatable to a circuit closing position, an earthing position, and a circuit opening position. | 06-20-2013 |
20130154526 | APPARATUS AND METHOD FOR COMPENSATING OFFSET OF CURRENT SENSOR - Provided is an apparatus for compensating offset of a current sensor detecting a motor current supplied by an inverter for PWM (Pulse Width Modulation) control of a motor, the apparatus including a current controller providing a PWM signal generated based on the motor current detected by the current sensor to the inverter, calculating an offset using the motor current detected by the current sensor in response to presence and absence of the PWM control of the motor, or offset-compensating the motor current detected by the current sensor. | 06-20-2013 |
20130154536 | APPARATUS FOR CONTROLLING AN INVERTER - An apparatus for controlling an inverter is disclosed, the apparatus detecting a DC link voltage of the inverter and a load amount using an output current outputted from a motor to the inverter, and deducting a load amount detected at the time of occurrence of instantaneous power failure from a command frequency at the time of the occurrence of instantaneous power failure, whereby a command voltage and a command frequency driving the motor can be outputted. | 06-20-2013 |
20130154775 | AUXILIARY CONTACT MECHANISM FOR MAGNETIC CONTACTOR - An auxiliary contact mechanism of a magnetic contactor includes: a contact support member having an axial recess portion formed in the center in a vertical direction; a stationary contact; a movable contact; a permanent magnet position-fixed to the contact support member and applying magnetic attractive force to restrain the movable contact so that the circuit closing position that the movable contact is in contact with the stationary contact is maintained; and a slide movable supporter having a pressing projection portion formed at a position separated apart by a predetermined distance from the movable contact when in the circuit closing position and pushing the movable contact to release the movable contact from a restrained state after a predetermined delay time has passed, when the slide movable supporter is moved downwardly upon receiving downward pressing force by the main contact slide support member. | 06-20-2013 |
20130154848 | METER CAPABLE OF HAVING COMMUNICATION SECURITY AND DATA TRANSMITTING/RECEIVING SYSTEM USING THE SAME - Disclosed is a meter capable of having communication security and a data transmitting/receiving system using the same, the system being such that a the server generates a public key and a private key corresponding to the public key, and transmits the public key to a meter, and the meter comprises a communication unit receiving the public key from a first communication unit, a frame generating unit encoding the data frame using the public key, and a controller controlling the communication unit to allow transmitting the encoded data frame. | 06-20-2013 |
20130155628 | MOTOR STARTER MODULE - A motor starter module is provided, the module according to the present disclosure including a PCB (Printed Circuit Board) substrate configured to communicate with and control the magnetic contactor, a mechanism part operating in association with an operation of the magnetic contactor, and an upper case covering the PCB substrate and an outer case of the mechanism part, whereby the magnetic contactor can be locally and directly driven, and controlled via communication to reduce a line cost, to shorten an operation time and to promote maximization of spatial utilization. | 06-20-2013 |
20130156116 | BLOCK FILTER FOR POWER LINE COMMUNICATION - Provided is a blocking filter for PLC, the blocking filter including a low pass filter unit including a capacitor and a plurality of inductors, a plurality of magnetic saturation prevention circuits each connected to the inductor in parallel to prevent magnetic saturation of the inductor, and operating in response to an interruption control signal inputted from outside, and a first switch connected or opened in response to the interruption control signal and interconnected between the low pass filter unit and a neutral line. | 06-20-2013 |
20130158894 | MEASURING APPARATUS AND MEASURING METHOD OF TRAIN WHEEL WEAR - Provided is a measuring apparatus and method of train wheel wear, the apparatus including a speed measuring unit measuring speed of a train, a position measuring unit measuring a position of the train, and a calculation unit calculating abrasiveness of a train wheel on a train based on the measured speed and position of the train, whereby status of the train wheel can be accurately learned to minimize the number of devices that may be additionally installed, and to quickly measure abrasiveness of the train wheel as well. | 06-20-2013 |
20130158902 | MULTI-CHANNEL LEAKAGE CURRENT MONITORING SYSTEM - Disclosed is a multi-channel leakage current monitoring system configured to monitor leakage currents transmitted to loads from a plurality of molded case circuit breakers (MCCBs), and to transmit the leakage currents to a smart meter. The system comprises: a plurality of current transformers configured to measure power information data about loads connected to secondary side power lines of the MCCBs; and a multi-channel measuring unit (MCMU) configured to detect a leakage current by analyzing the power information data received from the current transformers. Under such a configuration, the size of the system can be reduced, and the number of communication lines can be minimized. | 06-20-2013 |
20130166784 | METHOD OF RESTORING CONFIGURATION OF PROFIBUS AND PROFIBUS NETWORK SYSTEM - A method of restoring a profibus configuration according to an embodiment includes receiving a configuration restoration command by the configuration restoration device of a profibus network system; receiving a binary image from the master device of the profibus network system by the configuration restoration device; creating restoration information including at least one of the configuration information of the profibus network system, the basic information of the slave device associated with the master device, and user configuration information from the binary image by the configuration restoration device; and outputting the created restoration information. The configuration of a profibus network may be restored from the master device by using this. | 06-27-2013 |
20130168213 | CIRCUIT BREAKER PROVIDED WITH MECHANICAL TRIP MECHANISM - A circuit breaker having a mechanical trip mechanism enabling a circuit breaker to perform an emergency manual trip operation is provided. The circuit breaker includes: a fixed contactor connected to a circuit; a movable contactor movable to a closed state in which the movable contactor is in contact with the fixed contactor and a broken state in which the movable contactor is separated from the fixed contactor, an opening and closing mechanism configured to convert a rotational motion of a plurality of links and a rotational shaft to enable the movable contactor to be brought into contact with the fixed contactor or separated therefrom; a trip latch locked to or unlocked from a main link provided in the opening and closing mechanism; and an OFF button configured to rotate the trip latch to unlock the trip latch from the main link when manually pressed. | 07-04-2013 |
20130168216 | THREE-POSITION ACTUATOR FOR SWITCHGEAR - An actuator according to the present disclosure comprises: a disconnecting switch drive shaft; a first drive gear axially coupled to the drive shaft; a first follower gear in engagement with the first drive gear; a first drive disc having a first drive roller; a first rotary shaft axially supporting the first follower gear and the first drive disc; an earthing switch drive shaft; a second drive gear axially coupled to the earthing switch drive shaft; a second follower gear in engagement with the second drive gear; a second drive disc having a second drive roller; a second rotary shaft; a zeneva disc having a pair of groove portions which the first drive roller or the second drive roller is inserted into or separated from; and a main shaft for switching the disconnecting switch or the earthing switch in accordance with the rotation of the zeneva disc. | 07-04-2013 |
20130169203 | APPARATUS FOR CONTROLLING INTERIOR PERMANENT MAGNET SYNCHRONOUS MOTOR - Disclosed is an apparatus for controlling an IPMSM, the apparatus according to exemplary embodiments of the present disclosure including a first generating unit generating a q-axis reference voltage of a synchronous reference frame from a reference frequency, a current converter generating a current of the synchronous reference frame from a 3-phase current of the IPMSM, and a voltage controller generating a d-axis reference voltage compensating a voltage in response to a load change. | 07-04-2013 |
20130169212 | APPARATUS FOR CHARGING BATTERY IN ELECTRIC VEHICLE - Provided is an apparatus for charging battery in electric vehicle that includes a DC-DC converter unit formed in two channels for converting a charge of the low voltage battery to a power source by receiving a power source from the high voltage battery. | 07-04-2013 |
20130169257 | METHOD OF CONTROLLING MULTI LEVEL CONVERTER - A method of controlling a multilevel converter is provided. In the method of controlling a multilevel converter according to an embodiment, a sub-module having the maximum voltage and a sub-module having the minimum voltage respectively are extracted from among a plurality of sub-modules. An amount of state variation of each of the plurality of sub-modules is determined. When the amount of state variation is not determined to be 0, a direction of a current flowing through the plurality of sub-modules is detected. A subsequent state of at least one sub-module is determined according to at least one of the amount of the state variation and current direction. Subsequently an arrangement time for sub-module values can be efficiently reduced while the number of the sub-modules increases in the voltage balancing. | 07-04-2013 |
20130169288 | APPARATUS AND METHOD FOR DETECTING FAILURE OF SWITCHING DEVICE IN INVERTER - Disclosed is an apparatus and method for detecting failure of a switching device in an inverter, the method including detecting a maximum value and a minimum value of a phase current inputted into a motor from synchronous angle information of the motor through a switching device in a predetermined leg of the inverter unit, and detecting failure of the switching device of the leg through an asymmetry ratio of the phase current. | 07-04-2013 |
20130169387 | SHORTAGE VOLTAGE TRIP DEVICE OF MOLDED CASE CIRCUIT BREAKER - Provided is a shortage voltage trip device of a molded case circuit breaker. In the molded case circuit breaker, driving current applied into a trip driving part is reduced in proportion to reduction of a power applied into a circuit. When the voltage applied into the circuit is greater than a rated voltage, the trip driving part is stopped, and an operation of a trip driving mechanism is restricted by a trip lever. When the voltage applied into the circuit is less than the rated voltage, the trip driving part is operated, and the restriction of the trip driving mechanism is released by the trip lever rotated by being linked with the operation of the trip driving part. Thus, the circuit may be more simply switched, and operation reliability of a product may be improved. Also, the product may have a more simplified structure. | 07-04-2013 |
20130169389 | DC POWER RELAY - Provided is a DC power relay. The DC power relay includes a pair of fixed contacts disposed parallel to each other, a movable contact vertically movable with respect to the pair of fixed contacts, the movable contact being in connect with or being separated from the pair of fixed contacts, a pair of permanent magnets for guide an arc generated when the movable contact is in contact with or is separated from the pair of fixed contacts to the outside, and a damping magnet reducing a force generated in a direction in which the movable contact is separated from the fixed contacts when the movable contact is in contact with the fixed contacts. | 07-04-2013 |
20130170256 | CONTROL APPARATUS FOR REGENERATIVE MEDIUM VOLTAGE INVERTER - A control apparatus for regenerative medium voltage inverter is disclosed. The control apparatus controls a switching of a PWM converter unit by generating a voltage compensating a power difference between an input and an output of the PWM converter unit. | 07-04-2013 |
20130170395 | METHOD FOR LINKING ETHERNET COMMUNICATION FOR DIGITAL PROTECTIVE RELAY AND THE DIGITAL PROTECTIVE RELAY PERFORMING THE SAME - A method for establishing an Ethernet communication link of a digital protective relay having at least two communication ports, includes: configuring physical layers of a first communication port and a second communication port; determining whether or not auto-negotiation with respect to the first communication port or the second communication port is successful; and replacing configuration information regarding one of physical layers of the first communication port and the second communication port with configuration information regarding the other of the physical layers of the first communication port and the second communication port according to whether or not the auto-negotiation with respect to the first communication port and the second communication port has been successful. Although Ethernet ports of the digital protective relay are connected without priority, the digital protective relay may perform the same operation. | 07-04-2013 |
20130173500 | ELECTRONIC POWER METER AND METHOD FOR STORING DATA THEREOF - The present disclosure relates to an electronic power meter and a method for storing data thereof. The electronic power meter includes a communication unit that receives a critical peak pricing rate data, a memory that stores first metering data corresponding to the critical peak pricing rate data received via the communication unit, and second metering data corresponding to a predetermined varying pricing rate data, the memory storing the first metering data and the second metering data into different storage areas respectively, and a controller that calculates metering data by applying a corresponding rate for each time slot according to the varying pricing rate or the critical peak pricing rate. | 07-04-2013 |
20130173748 | APPARATUS AND METHOD FOR PROCESSING PROJECT INFORMATION FOR CROSS-PLATFORM - An apparatus and a method for processing project information for a cross-platform environment in an automation system field are provided. In the apparatus for processing project information according to an embodiment, a web server receives a request signal for project information from a client and transmits projection information corresponding to the request signal. A project server collects heterogeneous data transmitted from an automation system, converts the collected heterogeneous data into data in a predetermined format for transmitting to the client, and outputs the converted data to the client via the web server. | 07-04-2013 |
20130187010 | TRACK CIRCUIT APPARATUS FOR TRAIN - A track circuit apparatus for a train, the track circuit apparatus includes: a ground-based transmitter that is installed corresponding to each of a plurality of block sections divided from a track circuit formed by rails, digitally modulates transmission data by a carrier frequency predetermined and common for each of the block sections, assigns different pseudo random noise (PN) codes to adjacent block sections, and modulates and transmits the data; and a ground-based receiver or an on-train receiver that demodulates received data corresponding to a block section based on the carrier frequency of one of reception signals received from the block section and the PN code assigned to the block section. | 07-25-2013 |
20130187769 | APPARATUS AND METHOD FOR MANAGING ALARMS OF SYSTEM - Disclosed are an apparatus and a method for managing alarms based on state information received from systems. The method includes receiving alarms including state information of a remote control system; displaying an alarm queue including at least one of the received alarms; setting important alarms from among the alarms displayed in the alarm queue; and deleting the important alarm from the alarm queue when a user confirms the important alarm or a signal notifying a recovery to a normal state of a system corresponding to the important alarm is received. | 07-25-2013 |
20130188752 | ANALOG INPUT AND OUTPUT MODULE - Provided is an analog input and output module, the module comprising a first signal processing unit configured to separate analog signal inputted from a plurality of HART transmitters from first HART data, convert the analog signal to digital data, transmit the first HART data to a second signal processing unit, and transmit second HART data received from the second signal processing unit to at least one of the plurality of HART transmitters; and the second signal processing unit configured to control the first signal processing unit and storing conversion result. | 07-25-2013 |
20130193882 | METHOD FOR CONTROLLING INVERTER - A method for controlling an inverter in a system including a load, a motor for driving the load, and an inverter for operating the motor comprises when a load amount of the load is reduced to below a sleep level, checking whether a time corresponding to a sleep delay has lapsed; when the load amount of the load is still below the sleep level even after the sleep delay, varying an operating frequency of the motor, and if there is no change in a feedback from the load in response to the variation in the operating frequency, controlling the inverter to enter a sleep mode. | 08-01-2013 |
20130193890 | MEDIUM VOLTAGE INVERTER CONTROL APPARATUS AND MEDIUM VOLTAGE INVERTER SYSTEM - An exemplary embodiment of the present disclosure includes a medium voltage inverter control apparatus and a medium voltage inverter system using the same. The medium voltage inverter control apparatus determines input voltage information by receiving an input voltage of a medium voltage inverter, compares an output command of the medium voltage inverter with an output of a first PLL unit to output a difference therebetween, and synchronizes the output command of the medium voltage inverter using the difference. | 08-01-2013 |
20130193922 | APPARATUS FOR DISCHARGING DC-LINK CAPACITOR FOR ELECTRIC VEHICLE CHARGER - An exemplary embodiment of the present disclosure includes an apparatus for discharging DC-link capacitor for electric vehicle charger. In a case the apparatus operates abnormally, operations of a rectifier, a boost PFC circuit and a DC-DC converter are discontinued, and the apparatus receives the power source charged in the DC-link capacitor through the auxiliary power supply unit to thereby perform a control operation. | 08-01-2013 |