42nd week of 2015 patent applcation highlights part 61 |
Patent application number | Title | Published |
20150295442 | SERIES-CONNECTED STORAGE INTERFACE CONVERTER - A method for operating a plurality of energy storage devices includes controlling operation of the plurality of energy storage devices connected in series by independently varying a current and/or bypassing and/or reversing a polarity of at least one of the plurality of energy storage devices without a corresponding change in current, bypass, or reversal of polarity of one or more of the other energy storage devices connected in series. | 2015-10-15 |
20150295443 | Power Recovery Controller - The inventive subject matter provides a circuit and a method for efficiently charging a battery. In one aspect of the invention, the circuit includes an oscillator that generates a series of current pulses at a frequency that corresponds to a resonant frequency of the battery. In some embodiments, the series of current pulses includes constructive resonant ringing that is constructive with respect to the charging of the battery. The constructive resonant ringing includes decaying oscillation of currents generated in response to a current pulse. | 2015-10-15 |
20150295444 | METHOD FOR OPERATING AN ELECTRONIC APPLIANCE, CHARGING APPARATUS FOR CHARGING A BATTERY FOR AN ELECTRONIC APPLIANCE, AND MOTOR VEHICLE - A method operates an electronic appliance that has a battery and a charging device for charging the battery with electric current. At least one functionality of the electronic appliance is set to a state that has previously been selected by a user of the electronic appliance when a coupling state of the charging device to a charging apparatus, which is external to the electronic appliance, for charging the battery is altered. A charging apparatus charges the battery for the electronic appliance. | 2015-10-15 |
20150295445 | ELECTRIC POWER CONVERSION APPARATUS AND METHOD OF CONTROLLING THE SAME - Assuming that a transformer has a primary to secondary winding turn ratio 1:N, VR denotes a voltage of regenerated power, VCd denotes a discharge final voltage of a first battery connected with a transformer-primary-side center tap, VCc denotes a charge final voltage of the first battery, VBd denotes a discharge final voltage of a second battery connected with a transformer-secondary-side full bridge circuit, VBc denotes a charge final voltage of the second battery and Drain denotes a lower limit of a duty ratio D of a transformer-primary-side full bridge circuit, an apparatus determines upon (VBd/N)≦VR≦(VBc/N) that the first and second batteries may be able to be charged with regenerated power and determines upon VCd≦VR≦(VCc/Dmin) that the first battery may be able to be charged with the regenerated power. | 2015-10-15 |
20150295446 | BATTERY CASE FOR MOBILE DEVICE - A battery case for a mobile device is provided comprising a case, electrical components, a port, and an aperture size to contain at least one rechargeable battery. Also provided is a charger including a mount to receiving a rechargeable battery. The rechargeable battery may be configured to fit inside of the battery case. The charger may be figured to fit inside of the battery case. | 2015-10-15 |
20150295447 | ENERGY STORAGE FOR FURNITURE AS WELL AS FURNITURE WITH ENERGY STORAGE - A piece of furniture is provided, in particular, a table, a high table, or desk, wherein a storage module for storing electrical energy and for supplying the stored electrical energy to an electrical device to be disposed at or in the piece of furniture can be arranged at or in the piece of furniture. The storage module preferably can be arranged within a closable/lockable recess. Preferably, the storage module can be coupled to transmission means, which are adapted to transmit electrical energy supplied from the storage module to the electrical device to be disposed at the piece of furniture. The transmission means preferably comprise an inductive charging system. Further, a corresponding storage module for a piece of furniture as well as a furniture system are provided comprising a piece of furniture according to the invention and at least one storage module according to the invention are provided. | 2015-10-15 |
20150295448 | BATTERY CONTROL DEVICE, CONTROL METHOD, CONTROL SYSTEM AND ELECTRIC VEHICLE - A battery package including a power storage portion; and a control device, where the control device determines if a first temperature of the power storage portion is higher than a predetermined temperature, and if the first temperature is higher than the predetermined temperature, discharges the power storage portion at a first discharge rate. | 2015-10-15 |
20150295449 | DELAYED REACTIVE ELECTRICAL CONSUMPTION MITIGATION - The electrical consumption mitigation provided by energy storage systems can be unreliable when a consumption peak lasts long enough to deplete the energy stored and the remainder of the peak is unmitigated. By implementing a waiting period between detecting the peak and discharging the energy storage in which characteristics of the peak are observed, a peak mitigation system can lengthen the effective discharge duration of the energy storage system and prevent unmitigated plateaus from appearing. For example, when a consumption plateau is detected, the system may discharge at a slower rate than when a spike is detected in order to prolong mitigation activities before the conclusion of the plateau. Thus otherwise-incurred demand-related utility charges can be reduced without having to increase the capacity of the mitigation system. In some cases, these processes are performed with respect to the bounds of demand-averaged time periods used to calculate demand charges. | 2015-10-15 |
20150295450 | WIRELESS POWER RECEIVING DEVICE AND POWER CONTROL METHOD THEREOF - Disclosed is a wireless power receiver and a power control method thereof. The wireless power receiver includes a reception unit to receive power from the wireless power transmitter by using a resonance scheme; a load management unit to control an impedance of the load according to a state of the load; and a rectifying unit disposed between the reception unit and the load management unit in order to rectify the received power, wherein the power transmitted from the wireless power transmitter is controlled by the controlled impedance. | 2015-10-15 |
20150295451 | POWER CONTROL SYSTEM AND SOLAR POWER GENERATION SYSTEM - A solar power generation system includes: a solar power generation module | 2015-10-15 |
20150295452 | ENERGY BANKING SYSTEM AND METHOD USING RAPIDLY RECHARGEABLE BATTERIES - A system for banking energy is provided. The system includes a rechargeable battery and a controller selectively controlling a supply of electricity from the rechargeable battery and from at least one additional energy source to a plurality of electrically powered devices of a facility. The controller directs electricity from the at least one additional energy source to the rechargeable battery at selective times when the rechargeable battery is not supplying electricity to the plurality of electrically powered devices. | 2015-10-15 |
20150295453 | POWER SUPPLY FOR FAULTED CIRCUIT INDICATOR - A faulted circuit indicator includes a microprocessor or discrete logic to determine a fault condition and initiate one or more fault indications, a super capacitor, a battery, and power supply circuitry for providing power to the microprocessor and one or more fault indicators. The power supply circuitry: inductively receives energy from a power line; determines whether an induced voltage is sufficient to power one or more functions of the FCI device; and if not, determines whether available voltage from the super capacitor is sufficient to power the one or more functions of the FCI device. If so, the power supply circuitry draws voltage from the super capacitor and, if not, the power supply circuitry draws voltage from the battery when it is determined that the available voltage from the super capacitor is not sufficient to power the one or more functions of the FCI device. | 2015-10-15 |
20150295454 | INDUCTION MACHINE WITH DUAL PHASE MAGNETIC MATERIAL FOR SENSORLESS CONTROL - A rotor lamination that is made of a circular laminar element that has multiple rotor bar openings displaced circumferentially around the element and is made of a magnetic material, such as a dual-phase or bi-state magnetic material. A region of the element has received a treatment, thereby rendering the region so that the relative magnetic permeability of the treated region is less than that of the magnetic material. A rotor core assembly and induction machine that incorporates the rotor lamination and method of manufacture of the rotor lamination are also disclosed. | 2015-10-15 |
20150295455 | Rotating Electric Machine and Electrically Driven Vehicle - Provided is a rotating electric machine including a rotor and stator fitted with various numbers of poles and slots and adapted to reduce vibration/noise of the machine. The rotating electric machine in accordance with an aspect of the present invention includes a stator having an S number of teeth, and a rotor disposed in the stator with a gap intervening between the stator and the rotor. The plurality of teeth in the stator are grouped in units of the number of teeth that is equal to a value “m” or a value “d”, the value “m” being obtained by dividing the number of stator slots, S, by the greatest common divisor N of the number of poles, P, and the number of stator slots, S, the value “d” being an aliquot of “m”. At least one tooth in each of the tooth groups has a distal end different in shape from distal ends of other teeth belonging to the same tooth group, and the plurality of tooth groups have the same configuration. | 2015-10-15 |
20150295456 | ELECTRIC MACHINE AND METHOD OF OPERATION THEREOF - In one aspect of the invention for which protection is sought there is provided an electric machine comprising a substantially circular rotor and a stator, wherein the stator comprises at least one substantially arcuate segment. Aspects of the invention also relate to a stator segment comprising at least one inter-pole shield disposed between adjacent teeth. Further aspects of the invention also relate to a stator segment having a first shield disposed at a first circumferential end thereof and/or a second shield disposed at a second circumferential end thereof. Aspects of the invention also relate to a stator segment having a radially outwardly directed protuberance. | 2015-10-15 |
20150295457 | ROTOR AND MOTOR - A rotor includes first and second rotor cores, a field magnet, and an annular magnet. The first and second rotor cores each include a core base and core magnetic poles. The core magnetic poles are provided on an outer peripheral portion of the core base at equal intervals. The core bases are faced with each other. The core magnetic poles are alternately arranged in a peripheral direction. The annular magnet is a resin molding product including a magnetic pole magnet portion and an inter-pole magnet portion. The annular magnet has a non-contact portion not in contact with the first and second rotor cores. A gate mark portion in injection molding of the annular magnet is arranged in the non-contact portion. | 2015-10-15 |
20150295458 | MOTOR - A motor includes a stator, a rotor, a case, and back-surface magnet portions. The rotor has a first rotor core, a second rotor core and a field magnet. Each of the first and second rotor cores has a core base and claw-shaped magnetic poles. The field magnet is sandwiched between the first rotor core and the second rotor core and causes the claw-shaped magnetic poles of the first rotor core and the second rotor core to function as different magnetic poles. The back-surface magnet portions include a second and a first back-surface magnet portions respectively provided on the back surfaces of the claw-shaped magnetic poles of the second rotor core and the first rotor core. Size of the second back-surface magnet portion differs from size of the first back-surface magnet portion are different from each other. | 2015-10-15 |
20150295459 | ELECTRIC MACHINE FOR A VEHICLE POWERTRAIN - An electric machine is provided that includes a rotor assembly having a rotor core configured to support permanent magnets spaced around the rotor core to define a number of rotor poles. The rotor core has multiple rotor slots arranged as multiple barrier layers at each of the rotor poles. The rotor core is configured so that the electric machine satisfies predetermined operating parameters. In one embodiment, the electric machine is coupled with an engine through a belt drive train and provides cranking (engine starting), regeneration and torque assist modes. | 2015-10-15 |
20150295460 | SPOKE PERMANENT MAGNET ROTOR - The present invention relates to a spoke-type permanent magnet rotor ( | 2015-10-15 |
20150295461 | Electromagnetic Generator - The invention relates to the field of electrical engineering, and more particularly to low-speed electrical generators, and can be used, in particular, in wind energy installations. In the electromagnetic generator, the rotor of which comprises a disk ( | 2015-10-15 |
20150295462 | ROTOR FOR A ROTARY ELECTRIC MACHINE - A rotor for a rotary electric machine includes a rotor core which is formed by crimping laminated steel plates so as to be opposed to a stator, and has pairs of magnet housing holes disposed in a V shape, and pairs of magnets housed in the magnet housing holes. The rotor core has a crimped portion formed in a q axis core portion positioned between the two magnet poles, which are adjacent to each other in a circumferential direction, a first flux barrier formed between the q axis core portion and the magnet, and a pair of second flux barriers which enlarges from an end positioned at a center side of the magnet pole of the magnet housing holes toward a central axis of the rotor core. The crimped portion is formed so that distances between the crimped portion and both the first and second flux barriers are equal. | 2015-10-15 |
20150295463 | ENCAPSULATED MAGNET ASSEMBLY, METHOD OF PURGING A GAP ROTARY MACHINE AND OIL/GAS PLANT DESCRIPTION - A encapsulated magnet assembly includes at least one pole piece and an encapsulation housing. At least one portion of the encapsulation housing is adjacent to the at least one pole piece. At least one recess is provided in the encapsulation housing next to the housing portion for establishing fluid flow. The at least one recess is so shaped as to facilitate the fluid flow, | 2015-10-15 |
20150295464 | STATOR OF SUPERCONDUCTING ROTATING MACHINE, AND SUPERCONDUCTING ROTATING MACHINE - A unit winding formed by bundling conductor strands in a first slot first sectional region from one end in a stator axial direction toward the other end is turned back so that positions of the insulating conductor strands are inverted in the axial direction. The unit winding is disposed into a second slot third sectional region from the other end in the axial direction toward the one side, and turned back so that the positions of the strands are inverted in a circumferential direction. Then, the turned back unit winding is disposed into the first slot second sectional region from the one end in the axial direction toward the other side, and turned back so that positions of the strands are inverted in the axial direction. The unit winding is disposed in the second slot fourth sectional region from the other end in the axial direction toward the one end. | 2015-10-15 |
20150295465 | DIFFUSION BARRIER LAYER FOR CANS - A can for an electric motor, especially for an electric motor in a compressor, the can be at least partially provided with an ethyl silicate coating is provided. A method for producing a can of this kind is also provided. | 2015-10-15 |
20150295466 | METHOD FOR SEALING ELECTRIC MOTORS FOR THE APPLICATION OF LUBRICATION BY MIST - A sealing arrangement for an electric motor having a drive shaft passing through a back cover and through a housing chamber holding bearings that surround the drive shaft, the sealing arrangment including a bushing disposed within the back cover and surrounding the drive shaft for preventing leakage of lubricant and supporting the drive shaft, the bushing made from a composite material that includes carbon fibers suspended in a PTFE matrix. | 2015-10-15 |
20150295467 | INVERTER-INTEGRATED ELECTRIC COMPRESSOR - The purpose of the present invention is to provide an inverter-integrated electric compressor in which a DC power input system is simplified as a configuration for directly connecting a power source cable connector to a P-N terminal on a substrate, stress caused to the substrate can be reduced even in this case, and damage to the substrate and mounting components can be prevented. In the inverter-integrated electric compressor, a P-N terminal for inputting high-voltage DC power is provided on a main substrate of an inverter device, a power source cable can be connected by inserting a connector into the P-N terminal, the connector being provided to one end the terminal, an electrical component constituting the inverter device is placed on the opposite side of the P-N terminal to sandwich the main substrate therebetween, and the stress caused to the main substrate when the connector is inserted is borne by the electrical component. | 2015-10-15 |
20150295468 | LINEAR ELECTRO-MECHANICAL ACTUATOR - A linear electro-mechanical actuator includes a containment structure ( | 2015-10-15 |
20150295469 | MAGNETIC GADOLINIUM PROPULSION GENERATOR - An electrical generator is provided. The electrical generator may include a shaft and a rotor. The rotor may be connected to the shaft and may rotate about the axis of the shaft. The present invention may further include a plurality of magnetic blocks and a plurality of attractant blocks. The plurality of attractant blocks may include a first set and a second set in an alternating arrangement. The attractant blocks may include gadolinium. Therefore, a temperature regulator may heat and cool the attractant blocks in order to rotate the rotor and produce energy. | 2015-10-15 |
20150295470 | SELF-COOLED MOTOR - A self-cooled motor includes a rotor holder including a cylindrical portion and a bottom plate portion, and configured to rotate with a shaft; a housing supporting a bearing and a stator; and at least one blade rotating together with the shaft to generate an air current traveling radially outward, at least a portion of each blade being located axially below the bottom plate portion of the rotor holder. The housing includes a base portion axially above the rotor holder and an outlet edge portion in the housing and between adjacent ones of the attachment portions, and configured to define a main air outlet axially below, the main air outlet connecting a space radially inside the housing and a space radially outside the housing with each other. The bottom plate portion of the rotor holder includes a rotor vent hole passing therethrough in an axial direction. | 2015-10-15 |
20150295471 | SELF-COOLED MOTOR - A self-cooled motor includes a shaft; a rotor; a stator radially opposite the rotor; a housing supporting a bearing and the stator; and an impeller located axially below the rotor, and configured to rotate together with the shaft to generate an air current. The housing includes a base portion located axially above the rotor; two or more attachment portions radially outward of the rotor; and a cylindrical or substantially cylindrical cover portion configured to join the base portion and the attachment portions. A lower end of each attachment portion is located at an axial level lower than an axial level of the impeller. The base portion includes an air inlet. The cover portion includes an air outlet located between adjacent ones of the attachment portions, and configured to connect a space radially inside the housing and a space radially outside the housing with each other. | 2015-10-15 |
20150295472 | STRUCTURE FOR ATTACHING COOLING FAN - A structure for attaching a cooling fan includes: a fan attachment plate interposed between a ventilation cover of a servomotor and the cooling fan and having a cut-out hole; and a tubular vibration-proof member supported by the cut-out hole of the fan attachment plate and fixed to the ventilation cover. | 2015-10-15 |
20150295473 | ROTARY ELECTRICAL MACHINE COOLING APPARATUS - A rotary electrical machine cooling apparatus includes: a rotary electrical machine including a stator having an annular resin portion which covers a coil end, and a rotor; and a cooling portion that injects a coolant from an upper side to the annular resin portion. The annular resin portion includes: an annular main body portion, and a plurality of island portions that protrude in the axial direction from a plurality of positions in a circumferential direction of an axially outer end face of the annular main body portion. The plurality of island portions include a plurality of first island portions having first maximum circumferential lengths and a second island portion that has a second maximum circumferential length L | 2015-10-15 |
20150295474 | ELECTRIC MOTOR PROVIDED WITH COOLING STRUCTURE - An electric motor comprising a rotor which is attached to a shaft which is supported between a front and rear housings, a stator which is provided between the front and rear housings and has a winding wound at its inside, and a molded plastic piece which covers the stator and which covers the winding, which electric motor further comprises at least one medium charging hole which makes cooling medium flow in from outside the stator to the internal space and at least one medium discharging hole which makes the cooling medium be discharged from the internal space to outside the stator so as to thereby cool the rotor and stator by the cooling medium. | 2015-10-15 |
20150295475 | ACTUATOR WITH ELECTRIC MOTOR AND EMI REDUCTION CIRCUIT - An actuator includes a circuit board having an electromagnetic interference (EMI) reduction circuit. The actuator includes a motor having a motor casing mounted on the circuit board. A portion of the motor casing contacts a surface of the circuit board. The actuator includes an electrical contact conductively coupled to the EMI reduction circuit and mounted on the surface of the circuit board. The electrical contact establishes a conductive path between the EMI reduction circuit and the motor casing when the motor casing is mounted on the circuit board. | 2015-10-15 |
20150295476 | BRUSHLESS MOTOR - A brushless motor includes: a columnar rotor including magnets; a stator including at its center a space for placing the rotor; a housing member that houses the rotor and the stator; and a detector that detects a signal dependent on a rotational position of the rotor based on variation in a magnetic field associated with a rotation of the rotor. | 2015-10-15 |
20150295477 | Electric Rotating Machine - Provided is an electric rotating machine that is improved in the temperature detection accuracy of a thermistor and in ability to follow up a sudden change in the temperature of a stator winding. An electric rotating machine | 2015-10-15 |
20150295478 | MACHINE AND ACCESSORY - An electric machine having a stator and a rotor operably coupled therewith. An accessory is coupled with the electric machine and an electrical device is mounted in a housing. The housing may advantageously include a polymeric shell that is overmolded on a conductive element providing communication between the electrical device and an external circuit. In some embodiments, a printed circuit board is mounted within the housing and thermally coupled with a metallic base member. In other embodiments, a second printed circuit board is provided with the first printed circuit board having a substrate with a greater thermal conductivity than the substrate of the second printed circuit board. The first printed circuit board may include a MOSFET rectifier and may take the form of a ceramic printed circuit board with the second board being an FR-4 board. The electric machine may be advantageously employed as an alternator for a vehicle. | 2015-10-15 |
20150295479 | ROTATING RECTIFIER ASSEMBLY FOR ELECTRIC MACHINE - An electric machine having a rectifier assembly placed within a rotating shaft of the electric machine to convert the AC output of the electric machine to the DC input prior to transmission of the electricity from the electric machine. | 2015-10-15 |
20150295480 | ELECTRIC MACHINE WITH COMBINED INSULATOR AND TERMINAL ASSEMBLY - An electronics package for an alternator includes an electrically conductive carrier member and a terminal assembly engaging the carrier member. The carrier member includes an inner side, an outer side, and at least one passage extending from the inner side to the outer side. A plurality of switches are connected to the carrier member. The terminal assembly includes an electrically insulative portion and a plurality of electrical traces extending through the electrically insulative portion. The electrically insulative portion includes a post extending through the at least one passage of the carrier member, a first shoulder engaging the outer side of the carrier member, and a second shoulder engaging the inner side of the carrier member. The post, the first shoulder, and second shoulder are all formed as a unitary component. | 2015-10-15 |
20150295481 | Bi-Rotational Generator - A fluid-driven electricity generator includes a stator assembly and a rotor assembly. The stator assembly includes a stator core that includes a plurality of stator windings and one or more stator turbines connected to the stator core. The one or more stator turbines are configured to rotate in a first direction. The rotor assembly includes a plurality of permanent magnets that are substantially surrounded by the stator core. The rotor assembly also includes one or more rotor turbines connected to the plurality of permanent magnets. The one or more rotor turbines are configured to rotate in a second direction that is opposite the first direction. | 2015-10-15 |
20150295482 | ELECTRICAL MACHINE - An electrical machine comprising a stator and a member arranged to move relative to said stator. The stator comprises a first stator structure incorporating a first plurality of windings disposed along the direction of relative motion and displaced from the movable member in a direction perpendicular to the direction of motion, and a second stator structure incorporating a second plurality of windings displaced in a second direction from the movable member, so that the movable member lies between the two stator structures. The movable member is arranged to electrically couple with the windings. The first plurality of windings includes a single phase winding connected to a first single-phase ac supply, and the second plurality of windings includes a single phase winding of the same pole pitch being displaced in the direction of relative motion from first plurality of windings and connected to a second single-phase ac supply whose phase is displaced from that of the first supply. | 2015-10-15 |
20150295483 | CAGE ROTOR COMPRISING A DEFORMABLE BEARING - A cage rotor for an electric machine has a laminated rotor core having a groove, a rotor end ring that is cast on to one axial end of the laminated core and has a first material and a bar situated in the groove and supported by a deformable bearing having a bearing device. A laminated rotor core for a cage rotor includes a groove and a bearing device, an electric machine with a cage rotor, a method for producing a laminated rotor core by producing a bearing device on the laminated rotor core, and a method for producing a cage rotor by supporting a bar in a groove by a deformable bearing having a bearing device. | 2015-10-15 |
20150295484 | INDUCTION GENERATOR AND METHOD FOR GENERATING AN ELECTRIC CURRENT USING AN INDUCTION GENERATOR - An induction generator ( | 2015-10-15 |
20150295485 | Actuator and Method of Manufacturing Actuator - Provided are an actuator capable of easily aligning the center axis of an entire apparatus including a mover and a stator, and a method of manufacturing the actuator. The actuator includes a mover unit which includes a mover having a magnetic field part attached to a peripheral surface of center part of a shaft, bearing parts provided on both end parts of the shaft, a cylindrical body which houses the center part of the shaft and the magnetic field part therein, and has both end parts connected to the bearing parts. A stator in which coils are wound on a core and case bodies are fixed to each other by screws, and then the mover unit is inserted into a fixed body of the stator and the case bodies from an opening side of the case body. | 2015-10-15 |
20150295486 | ELECTROMAGNETIC DRIVER WITH LEAD-OUT STRUCTURE FOR COIL - An electromagnetic driver with lead-out structure for coil includes at least one coil holder and at least one coil disposed on the coil holder. The coil holder has a plurality of metal connecting member, and the two lead-out ends of the coil are electrically connected to the first connecting terminals of the metal connecting members. The second connecting terminal of the metal connecting member is electrically connected to a conductive member, such as spring, and the coil of the electromagnetic driver can be independently and automatically manufactured and then assembled with the other conductive member. The coil of the electromagnetic driver can be directly replaced at maintenance. | 2015-10-15 |
20150295487 | Overmolded Flux Ring - An overmolded steel flux ring member for an eddy-current fan drive assembly. The flux ring member includes a base member having a hub member, an annular outer ring member, and a plurality of connecting arm members. An overmolding material, such as aluminum, is overmolded on the annular outer ring member preferably in separate sections. Ventiliation openings in said base member allow air to flow past a magnet ring for cooling. | 2015-10-15 |
20150295488 | SYSTEM AND METHOD FOR OVER-CURRENT PROTECTION - An exemplary power conversion system includes a power conversion device and a control system. The power conversion device converts electrical power from one form to another. The power conversion device includes at least one switching element capable of being turned off to block an electrical current flowing through the at least one switching element. The control system is electrically coupled to the power conversion device for monitoring an electrical current flowing through the at least one switching element and for monitoring at least one parameter in association with the operation of the power conversion system. The control system further generates an over-current threshold value that is variable with respect to at least one monitored parameter. | 2015-10-15 |
20150295489 | SEMICONDUCTOR DEVICE - A semiconductor device presented herein includes a first wiring including a first end and a second end configured to receive a voltage lower than a voltage of the first end. The semiconductor device includes a second wiring including a third end connected to the first end, and a fourth end connected to the second end. The semiconductor device includes a switching element set on the first wiring, a capacitor set on the second wiring, and a fuse portion set on the second wiring and positioned on a third end side of the capacitor. The semiconductor device includes a potential sensing portion connected to the second wiring between the fuse portion and the capacitor and configured to sense a potential of a connection point thereof. | 2015-10-15 |
20150295490 | INVERTER DEVICE - An inverter device includes an inverter circuit, which has switching elements in a bridge connection, a capacitor, which is connected in parallel to the input side of the inverter circuit, a control device, which controls the inverter circuit, a temperature detector, which detects the temperature of the capacitor, a degree-of-deterioration determiner, which determines the degree of deterioration of the capacitor, and a warm-up controller. When the temperature of the capacitor detected by the temperature detector is lower than a prescribed temperature, the warm-up controller controls the switching elements of the inverter circuit to supply a direct current set based on the degree of deterioration and the temperature of the capacitor to the coil of an electric motor connected to the output side of the inverter circuit. | 2015-10-15 |
20150295491 | STEP-UP CONVERTER - A step-up converter for stepping up an electrical input DC supply voltage to an electrical output DC supply voltage, including a voltage input having a positive and a negative input node, a voltage output having a positive and negative output node, a first and second output capacitor connected in series at the voltage output between the positive and negative output nodes and connected to one another via a center output node, and a first inductor connected between the positive and output nodes, a first switch, connected between the first inductor and the center output node, a second inductor connected between the negative output and negative input nodes, a second switch, connected between the center output node and the second inductor, and a total input capacitor, connected at the voltage input between the positive and negative input voltage nodes, the first and second inductors being inductively coupled to one another. | 2015-10-15 |
20150295492 | SILICON-ON-INSULATOR-BASED VOLTAGE GENERATION CIRCUIT - A silicon-on-insulator (SOI) based positive/negative voltage generation circuit includes: an inverter including an NMOS transistor and a PMOS transistor, a first transfer capacitor coupled to the PMOS transistor, a first output capacitor, a second transfer capacitor coupled to the NMOS transistor, a second output capacitor, a first diode disposed between the first transfer capacitor and the first output capacitor, a second diode disposed between the second transfer capacitor and the second output capacitor, one end of the first output capacitor is coupled to the ground, one end of the second output capacitor is coupled to the ground; wherein an output voltage of the inverter is controlled by a single-phase clock to flip periodically, charge the first transfer capacitor through a parasitic diode of the PMOS transistor, and charge the second transfer capacitor through a parasitic diode of the NMOS transistor. | 2015-10-15 |
20150295493 | CHARGE PUMP APPARATUS AND CHARGE PUMPING METHOD - A charge pumping method includes: generating a first boosted voltage by boosting an input voltage by a boosting mode of a first multiplier; changing the level of a voltage charged in at least one capacitor provided in the inside of a charge pump circuit, in preparation for a change in the boosting mode; and generating a second boosted voltage by boosting the input voltage by a boosting mode of a second multiplier. | 2015-10-15 |
20150295494 | System and Method for a Switched-Mode Power Supply - In accordance with an embodiment, a method of operating a switched-mode power supply includes receiving power from an input node via a first transistor, providing a first portion of the received power to a load via a switching transistor having a first terminal coupled to the first transistor and a second terminal coupled to the load via a series resistor and a series inductor, measuring a current through the load, measuring comprising monitoring a voltage across the series resistor; and controlling an average current through the load by switching on and switching off the switching transistor according to the measured current. | 2015-10-15 |
20150295495 | MOSFET SWITCH CIRCUIT FOR SLOW SWITCHING APPLICATION - A switch circuit includes a first MOS transistor and a second MOS transistor of a same conductivity type connected in parallel between a first terminal and a second terminal. The first and second MOS transistors have respective gate terminals coupled to the control terminal to receive a control signal to turn the switch circuit on or off where the control signal transitions from a first voltage level to a second voltage level at a slow rate of change. The first MOS transistor has a first threshold voltage and the second MOS transistor has a second threshold voltage where the first threshold voltage is less than the second threshold voltage | 2015-10-15 |
20150295496 | FLYBACK-BASED POWER CONVERSION APPARATUS - A power conversion apparatus including a flyback power conversion circuit, a control chip and a detection auxiliary circuit is provided. The flyback power conversion circuit receives and converts an AC input voltage into a DC output voltage. The control chip generates a PWM signal in response to a power supply requirement to control operations of the flyback power conversion circuit, and the control chip has a multi-function detection pin. The detection auxiliary circuit assists the control chip to obtain an auxiliary voltage related to the DC output voltage via the multi-function detection pin, and thereby determines a transition time of the PWM signal according to the auxiliary voltage. Besides, the detection auxiliary circuit assists the control chip to execute detections of an over temperature protection (OTP) and an over voltage protection (OVP) via the multi-function detection pin respectively within first and second detection phases. | 2015-10-15 |
20150295497 | Systems and Methods for a Variable Frequency Multiplier Power Converter - A power converter for converting DC power to DC power includes an inverter stage having two or more switched inverters configured to receive DC power from a source and produce a switched AC output power signal. A transformation stage is coupled to receive the switched output power signal from the inverter stage, shape the output power signal, and produce a shaped power signal. A rectifier stage having two or more switched inverters coupled to receive the shaped power signal and convert the shaped power signal to a DC output power signal is included. A controller circuit is coupled to operate the power converter in a variable frequency multiplier mode where at least one of the switched inverters is switched at a frequency or duty cycle that results in an output signal having a frequency that is a harmonic of the fundamental frequency being generated by the power converter. | 2015-10-15 |
20150295498 | POWER CONVERTERS - A power converter arrangement is described. The power converter includes a dc link and a power converter. The dc link is operably connected between a generator, or other power source, that provides an output voltage in use and a dc network. The power converter includes an inverter connected across the dc link in parallel with the generator, an isolation transformer having a primary tap changer and a secondary tap changer, and a rectifier. The rectifier has ac terminals connected to the secondary tap changer, a first dc terminal connected to the dc link, and a second dc terminal connected to the dc network. The dc terminal voltage of the rectifier is therefore summated with the output voltage of the generator to provide a converter output voltage. | 2015-10-15 |
20150295499 | SYSTEMS AND METHODS FOR LOAD COMPENSATION WITH PRIMARY-SIDE SENSING AND REGULATION FOR FLYBACK POWER CONVERTERS - System and method for regulating an output voltage of a power conversion system. The system includes a sampling component located on a chip configured to receive an input voltage through a terminal. The sampling component is configured to sample the input voltage and generate a sampled voltage. Additionally, the system includes an error amplifier configured to process information associated with the sampled voltage and a threshold voltage and generate a first output signal, and a first signal generator configured to generate a second output signal and one or more third output signals. Moreover, the system includes a comparator configured to receive the first output signal and the second output signal and generate a comparison signal, and a gate driver directly or indirectly coupled to the comparator and configured to generate a drive signal based on at least information associated with the comparison signal. | 2015-10-15 |
20150295500 | SAMPLING FOR DIMMER EDGE DETECTION IN POWER CONVERTER - A controller and a method for controlling a power converter includes a sample block coupled to generate a first, second, and third sample by sampling an input sense signal that is representative of an input voltage of the power converter. An enable signal is asserted when a first difference between the first sample and the second sample exceeds a first threshold. An edge signal is asserted when both the enable signal is asserted and a second difference between the first sample and the third sample exceeds a second threshold. A drive circuit is coupled to output a drive signal in response to the edge signal. The drive signal is for controlling a switch coupled to regulate an output of the power converter. | 2015-10-15 |
20150295501 | POWER CONVERSION DEVICE AND POWER CONVERSION METHOD - A power conversion method of a power conversion device including a plurality of primary side ports disposed in a primary side circuit and a plurality of secondary side ports disposed in a secondary side circuit magnetically coupled to the primary side circuit with a transformer, the power conversion device adjusting transmission power transmitted between the primary side circuit and the secondary side circuit by changing a phase difference between switching of the primary side circuit and switching of the secondary side circuit, the power conversion method including: calculating a transmission efficiency setting an adjustment value of the phase difference to a value obtained by dividing the transmission efficiency by a specified efficiency; and setting the phase difference to a value obtained by dividing the calculated value by the adjustment value when the adjustment value is less than the specified value. | 2015-10-15 |
20150295502 | POWER CONVERSION DEVICE AND POWER CONVERSION METHOD - A power conversion method of a power conversion device including a primary side port disposed in a primary side circuit and a secondary side port disposed in a secondary side circuit magnetically coupled to the primary side circuit with a transformer, the power conversion device adjusting power transmitted between the primary side circuit and the secondary side circuit by changing a phase difference between switching of the primary side circuit and the secondary side circuit, the power conversion method including: setting a target voltage of the primary side port to a value obtained by dividing a voltage of the secondary side port by a turns ratio of the transformer when the voltage of the primary side port is less than said value, and setting the target voltage of the primary side port to a specified value when the voltage of the primary side port is equal to said value. | 2015-10-15 |
20150295503 | POWER CONVERSION DEVICE AND POWER CONVERSION METHOD - A power conversion method of a power conversion device including a primary side port disposed in a primary side circuit and a secondary side port disposed in a secondary side circuit magnetically coupled to the primary side circuit with a transformer, the power conversion device adjusting transmission power transmitted between the primary side circuit and the secondary side circuit by changing a phase difference between switching of the primary side circuit and switching of the secondary side circuit, and changing a voltage of the secondary side port by a DC-DC converter connected to the secondary side port, the power conversion method including: monitoring a voltage ratio of a voltage of the primary side port and the voltage of the secondary side port; and causing the DC-DC converter to operate when the voltage ratio deviates from the reference value by the specified value or more. | 2015-10-15 |
20150295504 | ELECTRIC POWER CONVERSION APPARATUS AND METHOD OF CONTROLLING THE SAME - An electric power conversion apparatus includes a transformer having a primary coil and a secondary coil; a primary-side full bridge circuit having first and second arm circuits in parallel, respective midpoints of the first and second arm circuits being connected via the primary coil; a secondary-side full bridge circuit having third and fourth arm circuits in parallel, respective midpoints of the third and fourth arm circuits being connected via the secondary coil. The number of turns of the secondary coil between the latter respective midpoints is switched and transmission power transmitted between the primary-side and the secondary-side full bridge circuits is controlled through adjustment of a phase difference in switching between the first arm circuit and the third arm circuit and a phase difference in switching between the second arm circuit and the fourth arm circuit. | 2015-10-15 |
20150295505 | AC LOAD DETECTION AND CONTROL UNIT - Devices and methods for controlling a state of a load powered by an AC power source include a control unit having a memory, a processor coupled to the memory, a current sensor, a relay and a phase detector. The current sensor detects whether current is drawn by the load. The processor is configured to receive from the current sensor a state indication including whether current is drawn by the load. The processor may store the received state indication in the memory. The phase detector detects a zero-crossing point of the AC power source and provides that indication to the processor. In response to receiving the state indication, the processor is configured to activate the relay to change a phase of current to the load using the zero-crossing point detected by the phase detector in order to limit current flowing to the load in order to remotely turn off the load. | 2015-10-15 |
20150295506 | POWER CONVERTING APPARATUS, CONTROL DEVICE OF POWER CONVERTING APPARATUS, AND CONTROL METHOD OF POWER CONVERTING APPARATUS - A power converting apparatus includes: a power converter provided between each phase of an AC power source and each phase of a load; a controller for controlling the power converter to perform a power conversion control between the AC power source and the load; and a filter provided between the AC power source and the power converter. The controller has: an oscillation component detector to detect an oscillation component of an input voltage of the power converter or an oscillation component included in a current flowing through the filter; and an output voltage controller to control an output voltage of the power converter to suppress a resonance of the filter based on the oscillation component. | 2015-10-15 |
20150295507 | THYRISTOR BASED VOLTAGE SOURCE CONVERTER - A voltage source converter includes a number of valves, the valves including switching elements with anti-parallel diodes provided in a bridge for switching between two states. The bridge is provided in at least one phase leg that stretches between two direct current poles and has at least one midpoint, which is connected to an alternating current terminal. The switching element of at least one valve is a thyristor. The converter further includes a commutation cell associated with the valve, where the commutation cell is controllable to reverse-bias the valve if it is to stop conducting current. | 2015-10-15 |
20150295508 | Power Management, Phase Balancing, and Energy Storage Method - A method for improving phase balance in a three-phase power system, such as a three-phase system feeding Single Wire Earth Return distribution networks. The inventive system can take power from a suitable source—including the three-phase distribution itself—and feed it to a “weaker” phase to improve balance. In addition, the system can store energy taken from the three-phase power system during off-peak periods and use this to boost a weaker phase during periods of phase imbalance. The inventive system preferably uses an organic Rankine cycle heat engine to extract stored thermal energy and use it to boost a weak phase or phases. The organic Rankine cycle heat engine may also take power from renewable sources such as solar collectors. | 2015-10-15 |
20150295509 | METHOD AND ASSOCIATED TRANSMISSION SYSTEM - It is presented a method executed in a transmission system, the transmission system comprising an AC grid, a DC grid and at least two AC/DC converters connected between the AC grid and DC grid. The method comprises the steps of: obtaining set points for each one of the at least two AC/DC converters, each set point comprising a magnitude and direction of power through the respective AC/DC converter during normal operation generating, based on the set points, a virtual AC grid, the virtual AC grid corresponding to AC behaviour of the DC grid, as viewed from each AC side of the at least two AC/DC converters; and controlling the at least two AC/DC converters to mimic a behaviour in accordance with the virtual AC grid. A corresponding transmission system is also presented. | 2015-10-15 |
20150295510 | UNIVERSAL POWER SUPPLY APPARATUS - A universal power supply apparatus may include a power converting unit converting input power into a plurality of voltages having preset levels, a path providing unit providing transfer paths for the plurality of voltages having preset levels from the power converting unit and having a common capacitor connected to an output terminal of the transfer paths, a voltage selecting circuit unit selecting at least one output of the transfer paths corresponding to each of the plurality of voltages having preset levels, and a voltage controlling unit controlling a voltage of output power according to the selection of the voltage selecting circuit unit. | 2015-10-15 |
20150295511 | DUAL MODE MICRO-INVERTER SYSTEM AND OPERATION - A dual mode direct current-to-alternating current (DC-AC) micro-inverter is capable of operating either with or without connection to an active external AC power source. The dual mode DC-AC micro-inverter may operate in “current control mode” when connection to the active AC power source is present and may operate in “voltage control mode” when connection to the active external AC source is absent. Processes for operating an array of these micro-inverters are disclosed. The dual mode operation capability enables the micro-inverter(s) to function both in the grid connected mode (i.e., current control mode) as well as off-grid mode (i.e., voltage control mode). The system is configured to sense the presence or absence of grid power and automatically select the appropriate mode of operation. For the voltage control mode of operation, a process may include designating a master from the array of micro-inverters in order to establish the voltage and frequency references. | 2015-10-15 |
20150295512 | METHOD FOR FEEDING ENERGY FROM PHOTOVOLTAIC MODULES OF A PHOTOVOLTAIC SYSTEM AND INVERTER DESIGNED FOR EXECUTING THIS METHOD - A method for feeding energy from photovoltaic modules ( | 2015-10-15 |
20150295513 | Hybrid Power Converter for Renewable Energy Power Plant - A hybrid power converter system that comprises a first power bus connected to a DC power source, a second power bus connected to an AC load, and a third power bus connected to an energy storage device. One or more power converters are connected to the first power bus in parallel and are connected with the second and third power buses, each by a switch. The system includes a first switch for connecting or disconnecting a power converter to or from the second power bus and a second switch for connecting or disconnecting the power converter to or from the third power bus, to switch the source of power being provided to the AC load either from the DC power source or the energy storage device. With additional power converters connected into the system in a similar manner, several combinations of power supply are possible. | 2015-10-15 |
20150295514 | INVERTER DEVICE - An inverter device includes an inverter circuit, which has switching elements in a bridge connection, a capacitor, which is connected in parallel to the input side of the inverter circuit, a temperature detector, which detects the temperature of the capacitor, a battery charge information acquisition section, which acquires charge information related to a battery connected to the input side of the inverter circuit, and a warm-up controller. When the temperature of the capacitor detected by the temperature detector is lower than a prescribed temperature, the warm-up controller determines a warm-up current based on the battery charge information acquired by the battery charge information acquisition section and the temperature of the capacitor detected by the temperature detector, and controls the switching elements of the inverter circuit to supply the warm-up current to the coil of an electric motor connected to the output side of the inverter circuit. | 2015-10-15 |
20150295515 | SWITCHING STAGE, ENERGY CONVERSION CIRCUIT, AND CONVERSION STAGE FOR WIND TURBINES COMPRISING THE ENERGY CONVERSION CIRCUIT - The present invention relates to an energy conversion circuit comprising a switching stage with a positive DC voltage terminal ( | 2015-10-15 |
20150295516 | ENERGY CONVERSION DEVICE USING CHANGE OF CONTACT SURFACE WITH LIQUID - The present invention relates to an energy conversion device using a change of a contact surface with liquid and, more specifically, to a method and a device for converting mechanical energy into electrical energy by applying an opposite phenomenon to an electrowetting phenomenon. The energy conversion device having a simplified structure and reduced manufacturing costs with minimal malfunctions by changing a contact surface with liquid between a pair of electrodes and using the change of the contact surface with the liquid to generate electrical energy such that channel blocking can be prevented or a lubricating layer or electrodes complicatedly patterned on a channel are not required. | 2015-10-15 |
20150295517 | INTEGRAL PRELOAD MECHANISM FOR PIEZOELECTRIC ACTUATOR - A piezoelectric actuator that may include a monolithic frame having an integral bias band that provides a resilient restoring force between a first contact surface and a second contact surface of the actuator that may be used to rotate an adjustment shaft. In some cases, a preload mechanism may also be included with the frame. Such piezoelectric actuators may be used for adjustable optical mounting devices such as optical mounting devices. | 2015-10-15 |
20150295518 | VIBRATION ACTUATOR AND IMAGE FORMING APPARATUS MOUNTING THE VIBRATION ACTUATOR THEREON - A vibration actuator which is stably driven and has high durability. The vibration actuator is provided with a vibrating body having an elastic body, including a ferrous metal, and an electro-mechanical energy conversion device bonded to the elastic body, and a driven member frictionally contacting to the vibrating body and moving relatively with respect to the vibrating body. The elastic body has a nitrided layer contacting to the driven member, and the elastic body is electrically grounded without through a nitrided layer. | 2015-10-15 |
20150295519 | ELECTRICITY GENERATOR - An electricity generator including a first converter suitable for converting a variation of an energy to be harvested into a corresponding excess of electrical charges. The generator includes a circuit for collecting the excess of electrical charges, the circuit has a first controllable mechanical switch, and a control device for the first switch designed to control the switching of the switch to its closed position when the excess of electrical charges exceeds a first predetermined threshold. The switch is a magnetic switch and the control device comprises a variable magnetic field source which controls the switching of the first switch to its closed position only at the time when the excess of electrical charges exceeds the first predetermined threshold. | 2015-10-15 |
20150295520 | POWER GENERATOR - A power generator including: a vibration system configured to be attached to a vibrating member; and a power generating element attached to the vibration system. The vibration system is a multiple-degree-of-freedom vibration system that includes a first vibration system having a first mass member elastically supported by a first spring member, and a second vibration system having a second mass member elastically connected to the first mass member by a second spring member. The power generating element is arranged between the first and second mass members, and vibration applied from the vibrating member causes relative displacement of the first and second mass members so that vibration energy of the vibrating member is input to the power generating element. A natural frequency of the first vibration system is different from that of the second vibration system. | 2015-10-15 |
20150295521 | ELECTROSTATIC CHUCK AND POWER SUPPLY SYSTEM - In an electrostatic chuck and a power supply system, high-voltage drive is performed without generating electrical discharge even in a vacuum atmosphere, and a structure of the power supply system for the electrostatic chuck is simplified. This power supply system includes: an electrostatic chuck ( | 2015-10-15 |
20150295522 | POSITION CONTROL DEVICE - A compensation function constituting device calculates a correlation coefficient based on a moving distance required for reversing a moving direction of a movable unit and a sliding resistance acting on the movable unit, and a compensation amount output device calculates a moving distance on a position command value required until the movable unit starts to move according to the correlation coefficient and a feedback torque when the moving direction is reversed and increases a torque compensation amount in accordance with the moving distance after reversing the moving direction until the moving distance after the moving direction is reversed reaches the moving distance required until the movement is started. | 2015-10-15 |
20150295523 | FAN MOTOR CONTROL DEVICE - A fan motor control device is provided in which in a situation where a control unit ( | 2015-10-15 |
20150295524 | SAFE TORQUE OFF PROCEDURE - A method and an arrangement of producing a safe torque off procedure of an electrical drive including a control unit and one or more power units having controllable semiconductor switches. The method includes detecting a signal in a control unit indicating a requirement to stop the drive, generating, based on the detected signal, at least one safety-approved signal which when received in a power unit initiates shutting-down of the power unit, feeding the generated at least one safety-approved signal to one or more power units, and initiating the shutting down of the one or more power units upon the receipt of the at least one safety-approved signal, the at least one safety-approved signal initiating at least two different shut-down procedures of the one or more power units at different time instants. | 2015-10-15 |
20150295525 | Brushless Motors with Linear Hall Sensors - A motor system includes a motor including two linear Hall sensors configured to output analog signals, and a controller configured to control the motor. The controller is operable to monitor the analog signals output from the two linear Hall sensors, determine a plurality of auxiliary signals based on the analog signals, and determine a motor position based on the plurality of auxiliary signals. | 2015-10-15 |
20150295526 | ENHANCED INDUCTIVE SENSE USING MUTUAL INDUCTANCE - Methods and apparatus for determining rotor position in a motor including a rotor and stator windings. The method includes measuring inductive sense values for each pair of the stator windings by performing an inductive sense routine on the motor, measuring stator winding voltage values, induced by mutual inductance between windings, for each of the stator windings by performing a mutual inductance sensing routine on the motor, and determining the rotor position based on the inductive sense values and the stator winding voltage values. | 2015-10-15 |
20150295527 | Motor Controller and Method for the Field-Oriented Control of an Electric Motor - A motor control system is provided for field-oriented control of an electric motor for driving a vehicle. The motor control system includes a current setpoint creator, which is designed to receive a torque setpoint as an input signal and to output a torque-creating current setpoint and at least one field-creating current setpoint as output signals in order to control the electric motor in a field-oriented manner. An exceptional situation detection device detects a present torque setpoint, calculates a change based on the present torque setpoint and an earlier torque setpoint, and detects an exceptional situation if the magnitude of the change exceeds a specified threshold value. The motor control system is designed to adapt the torque-creating current setpoint based on the present torque setpoint when the exceptional situation is detected, thereby bypassing the current setpoint creator. | 2015-10-15 |
20150295528 | ALTERNATOR CONTROLLER AND SYSTEM AND METHOD FOR COMMUNICATING WITH AN ALTERNATOR CONTROLLER - According to various examples, alternator controllers, systems for communicating with an alternator controller and methods for communicating with an alternator regulator are described herein. As an example, the alternator controller includes an input terminal configured to be coupled to a coil of a stator of an alternator and an interface circuit coupled to the input terminal and configured to convert a multi-valued signal at the input terminal, into parallel signals. According to another example, a system for communicating with an alternator controller is described herein. This example includes a device and an alternator controller. The device includes an encoder. The alternator controller includes a decoder and at least one phase terminal. The encoder and the decoder are coupled via the at least one phase terminal of the alternator controller. | 2015-10-15 |
20150295529 | REACTIVE POWER CONTROL FOR WIND TURBINE GENERATORS - Wind farms and methods for operating wind farms are provided. A wind farm includes a plurality of wind turbine generators. A method includes determining an available reactive power value for each of the plurality of wind turbine generators. The method further includes distributing an individual reactive power command to each of the plurality of wind turbine generators. The individual reactive power command is individually tailored to each wind turbine generator of the plurality of wind turbine generators based on the available reactive power value for that wind turbine generator. | 2015-10-15 |
20150295530 | APPARATUS FOR DRIVING INTERIOR PERMANENT MAGNET SYNCHRONOUS MOTOR AND METHOD OF CONTROLLING THE APPARATUS - There is provided a driving apparatus of an interior permanent magnet synchronous motor (IPMSM) including a current command generator outputting a current command on a synchronous reference frame based on a command torque, wherein the current command generator generates the current command based on a variation in magnetic flux with respect to a rotor of the IPMSM. | 2015-10-15 |
20150295531 | SYSTEM AND METHOD FOR ESTIMATING TEMPERATURE OF ROTOR OF MOTOR - A system and method are provided for estimating temperature of a rotor of a motor configured to calculate temperature of the rotor using an actual measured data-based thermal model (thermal impedance model) and an energy loss model, and to estimate temperature of the rotor using the calculated temperature variation of the rotor. The method includes calculating, by a controller, an energy loss of the motor using driving conditions of the motor. The controller is also configured to calculate a temperature variation of the rotor in a predetermined reference temperature using the calculated energy loss and thermal resistances of the rotor and a stator of the motor. Further, the controller is configured to estimate a rotor temperature in the predetermined reference temperature using the temperature variation of the rotor. | 2015-10-15 |
20150295532 | ELECTRIC COMPRESSOR - A controller for an electric compressor sets a temperature rise region A, a temperature drop region B, and a steady region C from change in temperature of switching elements, and sets a carrier frequency for each of the set regions. In the region A, the carrier frequency is changed according to the element temperature so that the carrier frequency decreases with increase of the element temperature at startup of a motor. In the region B and the region C, the carrier frequency is changed according to the number of revolutions of a compression mechanism, so that the carrier frequency decreases with increase of the number of revolutions of the compression mechanism, regardless of the element temperature. | 2015-10-15 |
20150295533 | BALLASTED FIXED TILT RACKING SYSTEM - A fixed tilt racking system for mounting solar modules to a structure is disclosed. The fixed tilt racking system has a support rack, a ballast, and a solar module. The support rack includes a pair of trusses, a crossbeam connecting the forward portions of each truss, and a frame assembly connecting the rearward portions of each truss. The ballast is attached to and extends across a back section of the frame assembly. The solar module is connected to both the crossbeam and the frame assembly. | 2015-10-15 |
20150295534 | SOLAR CELL MODULE - A solar cell module comprises: a solar cell panel; a terminal box mounted to the back surface of the solar cell panel, which is one surface thereof; a frame mounted to the edges of the solar cell panel; and a metallic first cover composed of a base section for covering the back surface of the terminal box, which is one surface thereof, and of an affixation section affixed to a frame which composes the frame. | 2015-10-15 |
20150295535 | REDUCING MISMATCH CAUSED BY POWER/GROUND ROUTING IN MULTI-CORE VCO STRUCTURE - Reducing coupling and mismatch in multi-core VCOs, including: arranging a plurality of inductors in a plurality of VCO cores in a parallel differential inductor configuration with shared leads to form a single node, wherein the plurality of inductors includes at least a first inductor and a second inductor; connecting power/ground traces to the first inductor from a first side only; and connecting the power/ground traces to the second inductor from another side different from the first side only to avoid making a current loop. | 2015-10-15 |
20150295536 | Methods and Systems for Down-Converting a Signal Using a Complementary Transistor Structure - Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal is described herein. Briefly stated, such methods, systems, and apparatuses operate by receiving an EM signal and an aliasing signal having an aliasing rate. The EM signal is aliased according to the aliasing signal to down-convert the EM signal. The term aliasing, as used herein, refers to both down-converting an EM signal by under-sampling the EM signal at an aliasing rate, and down-converting an EM signal by transferring energy from the EM signal at the aliasing rate. In an embodiment, the EM signal is down-converted to an intermediate frequency (IF) signal. In another embodiment, the EM signal is down-converted to a demodulated baseband information signal. In another embodiment, the EM signal is a frequency modulated (FM) signal, which is down-converted to a non-FM signal, such as a phase modulated (PM) signal or an amplitude modulated (AM) signal. | 2015-10-15 |
20150295537 | DOHERTY POWER AMPLIFIER CIRCUIT - A Doherty power amplifier circuit is provided, which includes a power divider circuit, and a power amplifier circuit connected with the power divider circuit; this Doherty power amplifier circuit further includes a combination output circuit connected with the power amplifier circuit, wherein the combination output circuit is a rheostat filter coupler, or a rheostat filter, or a rheostat coupler. By adopting the circuit, the size of a power amplifier circuit can be reduced, the cost of the power amplifier circuit can be lowered, and the efficiency of a power amplifier can be improved. | 2015-10-15 |
20150295538 | LOW-VOLTAGE AMPLIFIER AND METHOD THEREOF - An amplifier is provided having a first mixed-length MOS device set for receiving an input signal and outputting an output signal, and a first load for providing termination for the output signal, wherein the first mixed-length MOS device set comprises a parallel connection of a plurality of MOS devices having different channel lengths including at least a short channel length MOS device and a long channel length MOS device. In one configuration, a threshold voltage of the short channel length MOS device is greater than a threshold voltage of the long channel length MOS device. A related method is also provided. | 2015-10-15 |
20150295539 | POWER AMPLIFIER CIRCUIT FOR COMMUNICATION SYSTEMS - A power amplifier includes an input for receiving an RF signal to be amplified; at least one power amplification circuit module in electrical connection with the input for amplifying the RF signal; at least one biasing circuit in electrical connection with the power amplification circuit for compensating the distortion of the RF signal so as to amplify the RF signal substantially linearly, and an output arranged to output the amplified RF signal. | 2015-10-15 |
20150295540 | OUTPHASING POWER AMPLIFIER HAVING UNBALANCED DRIVE POWER - Various methods and apparatus for operating an outphasing amplifier comprising first and second amplifiers to achieve wider bandwidth and higher efficiency of operation of the outphasing amplifier are disclosed. | 2015-10-15 |
20150295541 | CIRCUITS AND METHODS FOR BIASING A POWER AMPLIFIER - The present disclosure includes circuits and methods for power amplifiers. In one embodiment, a main amplifier stage and peaking amplifier stage of a power amplifier receive a modulated supply voltage. The peaking amplifier stage is biased dynamically to adjust the bias of peaking stage to compensate for changes in the power supply voltage. A bias voltage may be increased as the supply voltage on the peaking stage decreases, and the bias voltage may be decreased as the supply voltage on the peaking stage increases. Accordingly, bias characteristics of the peaking stage are maintained across supply voltage variations, and the efficiency of the power amplifier is improved. | 2015-10-15 |