09th week of 2018 patent applcation highlights part 76 |
Patent application number | Title | Published |
20180062472 | STATOR FOR ROTATING ELECTRIC MACHINE - A stator for a rotating electric machine includes an annular stator core and a stator coil. The stator core has a plurality of slots arranged in a circumferential direction thereof. The stator coil is formed of a plurality of electric conductor segments mounted on the stator core. Each of the electric conductor segments has a pair of in-slot portions and a turn portion. Each of the pair of in-slot portions is inserted in a corresponding one of the slots of the stator core. The turn portion is located on one axial side of the stator core and connects the pair of in-slot portions. Moreover, for each of the electric conductor segments, at least one of the pair of in-slot portions of the electric conductor segment includes a protruding part that protrudes in the circumferential direction of the stator core. | 2018-03-01 |
20180062473 | Inner-Rotor Type Motor and Stator Thereof - An inner-rotor motor including a housing, a stator and a rotor is provided to avoid the damage to the coil unit which often occurs during the assembly of the conventional inner-rotor motor. The housing has an inner periphery provided with a plurality of protrusions. The iron core has an outer periphery provided with a plurality of notches. The insulating sleeve includes a plurality of positioning members. In radial directions perpendicular to the shaft, each of the plurality of notches is spaced from a center of a shaft at a minimal distance, and each of the plurality of positioning members is spaced from the center of the shaft at a maximal distance. The maximal distance is smaller than the minimal distance. | 2018-03-01 |
20180062474 | EXPANDABLE SLOT CLOSURE FOR AN ELECTRIC MACHINE - A slot-closing device for closing a slot in a stator or a rotor of an electric machine includes a closure element for closing the slot. A closure element for closing the slot contains a ferromagnetic material, and has a predetermined bending section along a longitudinal extension direction of the closure element, such that two leg portions disposed at an obtuse angle of less than 180° to one another are connected by the bending section. An adhesive layer designed to harden when heated is disposed on edges of the two leg portions. | 2018-03-01 |
20180062475 | YOKE HOUSING, MOTOR, AND METHOD FOR MANUFACTURING YOKE HOUSING - A yoke housing includes a tubular case and a flange. The tubular case is formed from a metal sheet in a drawing process. The flange is formed at an end of the tubular case. The flange has a width in the lateral direction that is equal to the outer diameter of the tubular case. The flange has a base including beads and a thick portion. Each of the beads is formed by compressing the base. A portion of the base in which the beads are not formed defines a thick portion. The thick portion is located at a middle portion of the flange in the lateral direction. The beads are located on opposite sides of the thick portion in the lateral direction. | 2018-03-01 |
20180062476 | MOTOR AND MOTOR ASSEMBLY DEVICE - A motor addresses the problem of a decrease in usability due to the use of a complex structure on a counterpart mechanism on which the motor is mounted, the complex structure being used to prevent rotation of the motor on the counterpart mechanism while centering the motor shaft. The motor includes: a rotor with a shaft; a housing covering an outer periphery of the rotor; and an end plate covering an end portion of the housing in an axial direction of the rotor. The end plate includes a protruding portion for enabling external contact protruding in a direction in which the shaft extends. The protruding portion has an outer peripheral surface having a non-circular shape in a cross section perpendicular to the direction in which the shaft extends, and has an opening through a face thereof opposing the shaft. | 2018-03-01 |
20180062477 | SERVO MOTOR AND CIRCUIT BOARD THEREOF - The servo motor includes a casing, a stator, a rotor and a circuit board. The casing has a hollow body, a first bearing and a second bearing. The hollow body is mounted between the first bearing and the second bearing. The stator is disposed inside the hollow body, and surrounds an axial hollow portion. The rotor is disposed inside the stator. A shaft passes through the rotor in an axial direction, and two ends of the shaft are respectively mounted on the first bearing and the second bearing. The circuit board is disposed inside the hollow body and interposed between the stator and the first bearing, the periphery of the circuit board has a plurality of solder pads electrically connected to the stator. An outer surface of the circuit board has a protection layer, which covers the region of the solder pads near the outer edge of the periphery. | 2018-03-01 |
20180062478 | MOTOR - A motor according to the present disclosure is a motor including a motor body part and a driving circuit part, the motor body part including: a rotor; a stator including a wound coil; a winding terminal electrically connected to the coil and extending toward the driving circuit part; and a frame housing the rotor and the stator, wherein the driving circuit part includes: a case including a first attaching portion and a frame portion with openings on both end sides of the frame portion; a first wiring board including a driving circuit and a power device mounted on the first wiring board, the first wiring board being fixed to the first attaching portion; and a first electric wiring member including a first stress absorbing portion formed into a shape absorbing stress, the first electric wiring member electrically connecting the winding terminal and the first wiring board. | 2018-03-01 |
20180062479 | Modular Vehicle Engine Component Actuator - A modular vehicle engine component actuator comprising a first module including a motor, a printed circuit board, and a motor shaft. A second module includes a gear train and an output shaft. The first module is coupled to the second module in a relationship with the motor shaft extending into the second module and into coupling relationship with the gear train in the second module. The first and second modules define respective first and second openings and interior cavities in communication with each other. The first and second modules are coupled together in a relationship with the printed circuit board positioned between the motor in the first module and the gear train in the second module. The motor shaft extends through a hole in the printed circuit board and into coupling relationship with the gear train in the second module. | 2018-03-01 |
20180062480 | TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION AND INTEGRATED DRIVE GENERATOR - A toroidal continuously variable transmission comprises an input disc and an output disc which are disposed to face each other; a power roller which is tiltably disposed between the input disc and the output disc and transmits a rotational driving force of the input disc to the output disc in a transmission ratio corresponding to a tilt motion angle of the power roller; a trunnion including a base on which the power roller is rotatably mounted, and a pair of side walls provided on both sides of the power roller in an axial direction of a tilt motion shaft of the power roller in such a manner that the pair of side walls extend upward from the base and face a peripheral surface of the power roller, and a beam mounted on the pair of side walls, the beam extending in the axial direction of the tilt motion shaft, on a side opposite to the base when viewed from a position of the power roller, wherein the beam includes a pair of contact portions, each of the contact portions being configured to contact an end surface of a tip end side of each of the pair of side walls, and a pair of restricting portions configured to contact side surfaces of the pair of side walls, respectively, the side surfaces facing each other, to restrict a movement of the pair of side walls in a direction in which the pair of side walls approach each other. | 2018-03-01 |
20180062481 | WATER LINE ELECTRIC TURBINE GENERATOR - A water line electric turbine generator. The water line electric turbine generator includes a housing, the housing directing the direction of water flow. The water line electric turbine generator also includes an inlet, where the inlet is configured to receive water from a water supply and permit water to enter the housing and an outlet, where the outlet is configured to supply water to an external system and permit water to exit the housing. The water line electric turbine generator further includes a rotor assembly, where the rotor assembly is located entirely within the housing, rotates due to water flow from the inlet to the outlet and converts to rotation into electrical power. The water line electric turbine generator additionally includes a power output, where the power output provides the electrical power to an external device. | 2018-03-01 |
20180062482 | Rotor Retaining Ring - The present application provides a dynamoelectric machine. The dynamoelectric machine may include a stator, a rotor, and an air gap separating the stator and the rotor. The rotor may include a rotor retaining ring. The rotor retaining ring may include a slanted length extending along the air gap. | 2018-03-01 |
20180062483 | HEAT EXCHANGER FOR ELECTRIC MACHINES WITH DOUBLE END TO CENTER COOLING - An electric machine includes an enclosure housing multiple electrical components including a rotor assembly and a stator assembly, a heat exchanger coupled to the enclosure for cooling of the electrical components by creating an internal fluid flow circuit between the heat exchanger and the electrical components, wherein the heat exchanger comprises multiple cooling fluid inlets and a common cooling fluid outlet, wherein the multiple cooling fluid inlets are arranged so that cooling fluid enters the heat exchanger at different sections, and wherein the cooling fluid exits the heat exchanger through the common cooling fluid outlet. | 2018-03-01 |
20180062484 | SYNCHRONOUS GENERATOR FOR WIND TURBINE - This invention relates to a synchronous generator for wind turbines comprising a rotor ( | 2018-03-01 |
20180062485 | GENERATOR OF ELECTRICAL CURRENT BY MOVEMENT AND INDUCTION BY MEANS OF PERMANENT MAGNETS AND RESONANT COILS - The invention relates to a generator of electrical current by movement and induction by means of permanent magnets and resonant coils according to an envelope housing a circular solid element in the form of a rotor in which a variable magnetic flux is generated by incorporating thirty-eight permanent and rectangular magnets arranged such that they are radially aligned on the outer periphery of said rotor, and rotating inside a stator which has an annular shape and is hollow so as to carry out the cooling on the inside thereof, containing seventy-six idle coils which are regularly distributed and between which resonant capacitors and coils are alternated with non-resonant coils, arranged specifically three millimetres from the magnets, from which electrical current is generated with a very high efficiency. | 2018-03-01 |
20180062486 | INDUCTION ROTOR AND METHOD OF ASSEMBLING AN INDUCTION ROTOR - A rotor for an electromagnetic machine and a method of assembling the rotor are provided. In one embodiment, the rotor includes a lamination stack disposed about a rotational axis a plurality of conductor bars disposed within corresponding slots formed in the lamination stack and extending beyond the longitudinal ends of the lamination stack. End rings are positioned at either end of the lamination stack and define a plurality of openings configured to receive the ends of the conductor bars. Each end ring includes separate inner and outer concentric rings. The inner and outer rings define radially outer and inner surfaces configured to abut one another and each of the concentric rings defines a portion of each conductor bar opening in the end ring. | 2018-03-01 |
20180062487 | METHOD OF MANUFACTURING A ROTOR AND ELECTRIC MACHINE - The invention relates to a method of manufacturing a rotor for an electric machine, wherein the rotor is composed of at least one electric sheet wherein at least one electric sheet is thermally treated regionally to directly modify its magnetic permeability in the treated region. | 2018-03-01 |
20180062488 | RESIN FILLING METHOD AND RESIN FILLING DEVICE FOR MAGNET EMBEDDED CORE - A resin filling method for a magnet embedded core includes: a fixing step of sandwiching the laminated iron core at axial ends thereof between a first mold and a second mold provided to face each other; and a resin injecting step of injecting a resin into the magnet insertion hole from a resin injecting portion provided in the first mold or the second mold, wherein in the resin injecting step, an end portion of the resin injecting portion is inserted into the magnet insertion hole beyond an axial end surface of the permanent magnet inserted in the magnet insertion hole. | 2018-03-01 |
20180062489 | ROTARY ELECTRIC MACHINE - The present invention relates to a rotary electric machine formed by a stator assembly and a rotor assembly arranged such that they rotate relatively with respect to one another, the stator assembly comprising at least a first stator and a second stator, and the rotor assembly comprising at least a first rotor and a second rotor, the first stator, the first rotor, the second stator and the second rotor being arranged consecutively in a coaxial distribution. | 2018-03-01 |
20180062490 | INDUCTION MACHINE WITH INTEGRATED MAGNETIC GEAR AND RELATED METHODS - An induction machine with integrated magnetic gears is disclosed. The machine comprises two rotors and two stators. An outer stator has ferromagnetic material, producing a rotating magnetic field with a defined number of pole pairs synchronized with a supply frequency. A high speed rotor has ferromagnetic material and a combination of rotor bars and permanent magnet pole pieces selected so that the permanent magnet pole pieces do not interact with the outer stator magnetic field. The high speed rotor rotation is asynchronously coupled to the outer stator magnetic field. An inner stator has ferromagnetic steel segments that modulate the field produced by the high speed rotor permanent magnets. A low speed inner rotor has ferromagnetic material and permanent magnet pole pieces, the low speed inner rotor counter-rotating to the high speed rotor. The low speed inner rotor is synchronously coupled to the high speed rotor using modulation harmonics. | 2018-03-01 |
20180062491 | Interstructural and Inertial Actuator - Disclosed is an electrodynamic actuator that simultaneously produces a controlled linear combination of interstructural and inertial forces. Two coil pairs interact with radial or axial permanent magnets. The forces produced in the coil pairs acts between an end of the actuator and a common moveable mass. If the coil pair forces are equal and in the same direction they make the mass move and produce an inertial output force. If the coil pair forces are equal and in opposite directions the mass does not move and interstructural forces are produced between the two ends of the actuator. Combinations of inertial and interstructural forces are produced in a controlled manner by coordinating the electrical current through each coil pair. The actuator efficiency and the low frequency inertial force outputs are greatly improved compared to separate dedicated inertial and interstructural actuators. | 2018-03-01 |
20180062492 | VIBRATION MOTOR - A vibration motor includes a shaft having a center axis extending in one direction; a stationary portion having a coil wound in a circumferential direction of the center axis; a vibrating body arranged outside the shaft in a radial direction and being vibratable in the one direction relative to the stationary portion; and at least a single coil spring arranged between the stationary portion and the vibrating body, and wound in the circumferential direction. The vibrating body includes a weight and a magnet arranged inside the coil in the radial direction, in the one direction with respect to the weight. The coil spring overlaps the coil in the one direction. | 2018-03-01 |
20180062493 | Liquid Cooled Linear Induction Motor - A primary for a linear induction motor having a core, electrical winding coils and a cooling system. The core extends longitudinally and has slots extending laterally in a first face thereof. Electrical winding coils inserted in the slots have end turns that extend laterally beyond each side of the core. The electrical winding coils are aligned sequentially along a length of the core. The cooling system, which is adapted to receive a cooling fluid, includes a serpentine tubing assembly and two lateral tubes. The serpentine tubing assembly is at least partially in contact with the core so as to transfer heat from the core to the environment. Each one of the two lateral tubes extend longitudinally along a different side of the core and within a respective longitudinal alignment of the end turns of the electrical winding coils. | 2018-03-01 |
20180062494 | ELECTRIC GENERATOR, A WIRE TRAY MODULE, AND A MAGNETIC PLATE MODULE - An electric generator includes an electric generating device and a driving device. The electric generating device includes a supporting frame, and an electric generating mechanism including a transmission shaft rotatably mounted to the supporting frame, a wire tray unit disposed around the transmission shaft, and a magnetic plate unit including a magnetic plate body co-rotatably sleeved on the transmission shaft and multiple magnets mounted to the magnetic plate body. The wire tray unit generates an electric power induced by relative rotation of the wire tray unit and the magnets. The driving device is connected to the transmission shaft, and is driven by a part of the electric power to drive rotation of the transmission shaft. | 2018-03-01 |
20180062495 | SERIES-PARALLEL CONVERTER SYSTEM AND CONTROL METHOD THEREOF - A series-parallel converter system includes: a first set of parallel circuitries including a plurality of first circuitries in parallel with each other; a second set of parallel circuitries including a plurality of second circuits in parallel with each other, the second circuit being controlled in a second control method; wherein an input end of the first set of parallel circuitries and an input end of the second set of parallel circuitries are connected in series with an input power supply; and wherein the first circuitry in the first set of parallel circuitries includes: a first circuit being controlled in a first control method; and a first control circuitry electrically connected with the first circuit and configured to generate a first control signal for controlling the first circuit based on a variable intercept compensation, and an input voltage, a first output current and a virtual impedance of the first circuit. | 2018-03-01 |
20180062496 | ADAPTIVE CONTROLLER BASED ON TRANSIENT NORMALIZATION - A controller is provided for controlling a power stage of a power converter according to a control law, the control law implementing a specific type of compensator and being pre-designed to generate an objective response of a default power converter for a default parameter value of a component of the power stage. The controller is further configured to determine an actual response for an actual parameter value of the component of the power stage and to alter the control law for the actual parameter value of the component of the power stage such that the actual response matches the objective response. The controller determines a degree of matching between the actual response and the objective response by filtering the actual response to generate a filtered actual response and integrating a product of the filtered actual response and a delayed actual response. | 2018-03-01 |
20180062497 | POWER CONVERSION DEVICE - A power conversion device includes an inverter which converts a DC power supplied thereto from a power supply device to an AC power using an operation of a switching element and outputs the AC power toward a load a current meter which measures an output current from the inverter, and a control unit which controls the operation of the switching element to change an output voltage waveform from the inverter. The control unit changes the output voltage waveform on the basis of the measured output current. | 2018-03-01 |
20180062498 | POWER CONVERSION DEVICE - When switching operations of converter cells are stopped due to temporary voltage reduction in an AC system, a voltage determination unit performs determination regarding a voltage of each DC capacitor after a predetermined period has passed, and a charge control unit transmits a charging gate signal, via a gate control unit, to select a converter cell at a voltage level at which a self-feeding circuit of the converter cell is operable. Thus, a DC capacitor of a converter cell whose voltage is lower than the voltage level at which a self-feeding circuit is operable is charged, thereby enabling switching operations of all the converter cells. | 2018-03-01 |
20180062499 | CONTROL CIRCUIT FOR SEMICONDUCTOR SWITCHING ELEMENT, AND SEMICONDUCTOR DEVICE - A control circuit for a semiconductor switching element includes a control terminal, a main electrode terminal, and a current sensing terminal, and controls the semiconductor switching element including a diode connected to the main electrode terminal or the current sensing terminal. The control circuit includes an overheat detection circuit, a current detection circuit, and an interruption circuit. The overheat detection circuit outputs an overheat detection signal when a temperature detected based on an output of the diode is equal to or higher than a predetermined set temperature. The current detection circuit outputs a current detection signal when an output value of the current sensing terminal is equal to or greater than a predetermined set current value. The interruption circuit turns off the semiconductor switching element when both the overheat detection signal from the overheat detection circuit and the current detection signal from the current detection circuit are input. | 2018-03-01 |
20180062500 | VOLTAGE CONVERSION DEVICE - A voltage conversion device includes a first conversion circuit configured to switch a DC voltage at a DC power supply to convert the DC voltage into an AC voltage, a second conversion circuit configured to rectify the AC voltage converted with the first conversion circuit to convert the AC voltage into a DC voltage, a controller configured to control switching operation of the first conversion circuit, and emergency power supply circuits (a clamp circuit and a constant-voltage circuit) provided between a connection point of an auxiliary switching element and a capacitor and the controller. When an input voltage at the DC power supply decreases due to start-up of a starter motor in releasing idling stop of a vehicle, the emergency power supply circuits obtain a power supply voltage necessary for operation of the controller from a voltage at the connection point, and supply the power supply voltage to the controller. | 2018-03-01 |
20180062501 | DISTRIBUTED DRIVING SYSTEM - A step down convertor with a distributed driving system. In one embodiment, an apparatus is disclosed that includes an inductor coupled to an output node. The apparatus also includes first and second circuits. The first circuit can transmit current to the output node via the inductor, and the second can transmit current to the output node via the inductor. The apparatus also includes a third circuit for modifying operational aspects of the first circuit or the second circuit based on a magnitude of current flowing through the inductor. | 2018-03-01 |
20180062502 | PHOTOVOLTAIC INVERTER - Disclosed herein is a photovoltaic inverter that prevents degradation in the efficiency of photovoltaic generation by applying a reverse voltage of a DC voltage stored in a DC link capacitor to a solar cell array. The photovoltaic inverter includes: a DC link capacitor configured to store a DC voltage output from the solar cell array; a power conversion stage configured to generate an AC power by using the DC voltage stored in the DC link capacitor to transmit the generated AC power to a power system; and a controller configured to apply the DC voltage stored in the DC link capacitor to the power conversion stage or apply a reverse voltage of the DC voltage stored in the DC link capacitor to the solar cell array depending on whether a driving value of the solar cell array satisfies a predetermined driving condition. | 2018-03-01 |
20180062503 | PFC WITH STACKED HALF-BRIDGES ON DC SIDE OF RECTIFIER - The invention relates to an operating device ( | 2018-03-01 |
20180062504 | POWER FACTOR CORRECTION DEVICE AND CONTROLLING METHOD THEREOF, AND ELECTRONIC DEVICE - PFC device and controlling method thereof, and an electronic device are provided. The device includes: first and second input terminals configured to receive AC input signal including alternating positive and negative half-cycles; an output terminal configured to provide output signal; an inductor a first terminal of which is coupled with the first input terminal; a first bridge arm including first and second switch components whose first connection point is coupled with second terminal of the inductor; a second bridge arm including third and fourth switch components whose second connection point is coupled with the second input terminal; a first current sampling unit configured to sample falling edge of an inductor current flowing through the inductor; a switch controlling unit configured to generate switch control signal based on sampling result to control the first and second switch components to change switch status. Influence of parasitic parameters on the circuit is reduce | 2018-03-01 |
20180062505 | CONTROL CIRCUITS FOR SELECTIVELY APPLYING ERROR OFFSETS TO IMPROVE DYNAMIC RESPONSE IN SWITCHING POWER CONVERTERS - A control circuit for controlling a power circuit having a power switch includes a control loop configured to generate a control signal for the power switch of the power circuit based on an error signal determined by comparing a sensed parameter of the power circuit and a reference signal, and a positive offset signal and a negative offset signal each configured to adjust the control signal. The control circuit is configured to detect a change in an output current of the power circuit and selectively apply only one of the offset signals based on the change in the output current to adjust the control signal thereby enhancing a dynamic response to the change in the output current. Additional example control circuits, example power supplies and/or power converters including a control circuit for controlling a power switch, and example control methods are also disclosed. | 2018-03-01 |
20180062506 | Scalable Protection Voltage Generation - According to an embodiment, a circuit includes a protection voltage generator coupled to a first voltage node, a second voltage node, and a ground voltage node, the protection voltage generator configured to generate a plurality of protection voltages at a first plurality of nodes based on the first voltage node and the second voltage node, and a voltage protection ladder coupled between the first voltage node and a low voltage circuit, the voltage protection ladder coupled to the plurality of protection voltages at the first plurality of nodes, the voltage protection ladder configured to generate a first low voltage based on the first voltage node and the plurality of protection voltages. | 2018-03-01 |
20180062507 | DC-DC TRANSFORMER WITH INDUCTOR FOR THE FACILITATION OF ADIABATIC INTER-CAPACITOR CHARGE TRANSPORT - An apparatus for power transformation includes a power converter having a charge pump, a first regulator that regulates the power provided by the power converter, and a magnetic filter connected to a terminal of the charge pump. The particular terminal to which the magnetic filter is connected is selected to facilitate adiabatic inter-capacitor charge transport within the charge pump. | 2018-03-01 |
20180062508 | CHARGE PUMP HAVING AC AND DC OUTPUTS FOR TOUCH PANEL BOOTSTRAPPING AND SUBSTRATE BIASING - A charge pump that can be configured to operate in a first mode and a second mode is disclosed. The charge pump can comprise a charging capacitor coupled to a first node and configured to transfer a first DC voltage to the first node. The charge pump can also comprise a first output node and a second output node coupled to the first node. During the first mode, the first output node can be configured to output a second DC voltage based on the first DC voltage, and the second output node can be configured to output a third DC voltage based on the first DC voltage. During the second mode, the first output node can be configured to output the second DC voltage, and the second output node can be configured to output an AC voltage, the AC voltage being offset by the third DC voltage. | 2018-03-01 |
20180062509 | SWITCHING REGULATOR AND CONTROL CIRCUIT THEREOF - A control circuit in a switching regulator, the switching regulator including an inductor and a switching circuit configured to control a current passing through the inductor in response to a control signal, the control circuit configured to receive a feedback voltage of an output voltage of the switching regulator and receive the current passing through the inductor as a current sensing signal. The control circuit includes a first internal signal generator configured to generate a first internal signal based on the feedback voltage and a reference voltage, a second internal signal generator configured to generate a second internal signal based on the current sensing signal such that a base level of the second internal signal varies according to the feedback voltage and the reference voltage, and a comparator configured to output the control signal based on the first and second internal signals. | 2018-03-01 |
20180062510 | METHODS AND CIRCUITRY FOR SAMPLING A SIGNAL - Circuitry and methods for sampling a signal are disclosed. An example of the circuitry includes a node for coupling the circuitry to the signal being sampled and a plurality of capacitors, wherein each capacitor is selectively coupled to the node by a switch. An analog-to-digital converter is coupled to the node and is for measuring the voltages of individual ones of the plurality of capacitors and converting the voltages to digital signals. Delay circuitry is coupled to each of the switches, the delay circuitry is for closing one switch at a time for a predetermined period. | 2018-03-01 |
20180062511 | Control Method, Control Circuit and Device for Switching Circuit - The present disclosure relates to a control method, a control circuit and a device for a switching circuit, for solving the problem that a function of fixing a frequency cannot be realized when the switching circuit is operated under CCM and working in a constant on-time control mode or a constant on-time control mode. The present disclosure is suitable to various switching circuits, and an application scope of the control method of the switching circuit can be extended. The control method comprises: starting time measuring at a rising edge of a turn-on signal of the first switch; reducing a turn-on time or a turn-off time of the first switch when a first measured time is reached, and the rising edge in a next cycle of the turn-on signal has not arrived; increasing the turn-on time or the turn-off time of the first switch when the rising edge in the next cycle of the turn-on signal arrives but the first measured time is not reached. The control method according to the disclosure is used to fix a frequency of the switching circuit. | 2018-03-01 |
20180062512 | System and Method for Preventing Cross-conduction when Switching Circuitry During Voltage Regulation - To prevent cross-conduction when switching switches in switching circuitry for voltage regulation, a dead time may be maintained between turning off a switch and turning on a switch. The dead time may be determined based on a switching transition voltage and a voltage of the switching circuitry and may be implemented using a timer. | 2018-03-01 |
20180062513 | POWER CONVERTER HAVING LOW POWER OPERATING MODE - A power converter includes an input node that receives an input voltage and a control loop that regulates an output voltage of the power converter. The power converter also includes a comparison voltage generation circuit that generates a comparison voltage based on an operating point of the power converter. The power converter also includes a first comparator that compares a control loop voltage in the control loop with the comparison voltage, and generates a control signal. The power converter also includes a mode control circuit that transitions the power converter from the low power operating mode to a first operating mode using the control signal. The output voltage is regulated in both the first operating mode and the low power operating mode. | 2018-03-01 |
20180062514 | HYBRID ACTIVE POWER LINK MODULE DEVICE AND ASSOCIATED SYSTEMS AND METHODS - A hybrid active power link device includes a plurality of active power link modules (APLMs). Each APLM of the plurality of APLMs includes a plurality of switching devices including a first switching device and a second switching device coupled in series. Each APLM of the plurality of APLMs also includes at least one first-type energy storage device (ESD) coupled in parallel with both of the first switching device and the second switching device. The hybrid active power link device also includes at least one second-type ESD coupled in series with at least one APLM of the plurality of APLMs. | 2018-03-01 |
20180062515 | VOLTAGE CONVERTING APPARATUS AND METHOD OF CONTROLLING VOLTAGE CONVERTING APPARATUS - A voltage converting apparatus includes a plurality of output channels configured to provide a plurality of output voltages, a main energy transfer circuit configured to transfer, through an inductor, energy of an input power supply to a target output channel among the output channels, and an auxiliary energy transfer circuit connected to one of the output channels. | 2018-03-01 |
20180062516 | VOLTAGE REGULATOR CURRENT LOAD SENSING - A DC-DC converter including digital circuitry for determining load current supplied to a load. In some embodiments the digital circuitry determines the load current differently based on whether the DC-DC converter is operating in pulse frequency modulation mode or pulse width modulation mode. In some embodiments the DC-DC converter includes circuitry for determining if a short circuit or over current condition exists. | 2018-03-01 |
20180062517 | REDUNDANT POWER SUPPLY CONTROL CIRCUIT - A redundant power supply control circuit including a power isolating circuit and a soft start circuit is provided. The power isolating circuit is configured to isolate a first power provided by a first power device from a second power provided by a second power device. When the first power is provided to the redundant power supply control circuit, the power isolating circuit outputs the first power as a main power, and otherwise, the power isolating circuit outputs the second power to a load. The soft start circuit is coupled to the power isolating circuit to receive the main power. The soft start circuit is enabled after the soft start circuit receives the main power, such that the soft start circuit outputs the main power to the load. | 2018-03-01 |
20180062518 | HIGH SPEED TRI-LEVEL INPUT POWER CONVERTER GATE DRIVER - Various methods and devices that involve electronic circuits are disclosed. A disclosed method includes buffering an input signal using a first buffer. The first buffer is powered by a supply voltage and a reference voltage. The method also includes buffering the input signal using a second buffer. The second buffer is powered by the reference voltage and a ground voltage. The method also includes level shifting a first buffer output signal of the first buffer to a voltage range using a first level shifter, and level shifting a second buffer output signal of the second buffer to the voltage range using a second level shifter. The voltage range is larger than a delta between the supply voltage and the reference voltage. The reference voltage is greater than one quarter of the supply voltage and less than three quarters of the supply voltage. | 2018-03-01 |
20180062519 | VOLTAGE CONVERSION DEVICE - A voltage conversion device includes first and second converters. The first converter boosts an input voltage equal to or higher than a reference voltage (high regenerative voltage) to a first voltage more efficiently than the second converter boosting the input voltage equal to or higher than the reference voltage (high regenerative voltage) to the first voltage. The second converter boosts an input voltage lower than the reference voltage (low regenerative voltage) to a second voltage more efficiently than the first converter boosting the input voltage lower than the reference voltage (low regenerative voltage) to the second voltage. The voltage conversion device causes the first converter to boost the input voltage when the input voltage is equal to or higher than the reference voltage, and causes the second converter to boost the input voltage when the input voltage is lower than the reference voltage. | 2018-03-01 |
20180062520 | CONTROL SYSTEM FOR TRANSITIONING A DC-DC VOLTAGE CONVERTER FROM A BUCK OPERATIONAL MODE TO A SAFE OPERATIONAL MODE - A control system for a DC-DC voltage converter includes a microcontroller having first and second applications. The first application commands the microcontroller to generate a first signal that is received at a first pin on a high side integrated circuit to transition a first plurality of FET switches to an open operational state, and that is received at a first pin on the low side integrated circuit to transition a second plurality of FET switches to the open operational state. The second application commands the microcontroller to generate a second signal that is received at a second pin on the high side integrated circuit to transition the first plurality of FET switches to the open operational state, and that is received at a second pin on the low side integrated circuit to transition the second plurality of FET switches to the open operational state. | 2018-03-01 |
20180062521 | POWER CONVERTER OVERVOLTAGE SYSTEM - Power converters their methods of operation are described. An example method includes regulating an output using a switching circuit that responds to a control signal. The method includes comparing a feedback voltage from the output to a reference voltage using an error amplifier to create an error voltage, and comparing the error voltage to a ramp voltage from a periodic ramp signal using a comparator to create a PWM signal. The PWM signal is used in combination with the switching circuit to regulate the output. The method includes: clamping the error voltage, using a clamping circuit, if the error voltage drops below a lowest value for the periodic ramp signal while the power converter is regulating a load; and unclamping the error voltage, using the clamping circuit, if the error voltage rises above the lowest value for the periodic ramp signal while the power converter is regulating the load. | 2018-03-01 |
20180062522 | POWER CONVERTERS - A power converter for converting input power to output power includes a first transformer circuit, a second transformer circuit, and balance circuitry. The first transformer circuit includes a first primary winding for receiving a first part of the input power and a first secondary winding for generating a first part of the output power. The second transformer circuit includes a second primary winding for receiving a second part of the input power and a second secondary winding for generating a second part of the output power. The balance circuitry is coupled to a first terminal of the first secondary winding and a second terminal of the second secondary winding, and operable for balancing the first and second parts of the output power by passing a signal between the first and second terminals. The first and second terminals have the same polarity. | 2018-03-01 |
20180062523 | Current Sensing in an Electromagnetic Component Using an Auxiliary Winding Stub - Many electronic devices, such as voltage converters, motors, etc., include electromagnetic components through which the current flow must be estimated. Such electromagnetic components include transformer windings, motor windings, and other types of inductors. In order to estimate the current through such components with reasonable accuracy and without unnecessary power loss, the inherent resistance of the electromagnetic component is used in conjunction with an auxiliary winding through which effectively no current flows. A first terminal of the auxiliary winding directly connects to a first terminal of the electromagnetic component and runs in parallel to the component. The voltage across a second terminal of the auxiliary winding and a second terminal of the electromagnetic component is measured and closely approximates the voltage across the equivalent series resistance (ESR) of the electromagnetic component. This measured voltage is used to estimate the current through the component. | 2018-03-01 |
20180062524 | GROUND LEAKAGE POWER SUPPLY FOR DIMMING APPLICATIONS - A dimmer is provided for controlling power to a load, the dimmer having a ground leakage power supply deriving power from a connection of the dimmer to ground. The power supply may be a switching-mode power supply that can be the sole or primary power supply to power operation of the dimmer, including operation of the controller. | 2018-03-01 |
20180062525 | SWITCHING MODE POWER SUPPLY WITH ANTI-WINDUP CIRCUIT - The anti-windup circuit generally has a voltage clamping device in series with a current limiting device operatively connectable to the output current path of a feedback compensator; the feedback compensator being part of a switch-mode power supply (SMPS) having an input voltage source and a load and generating constrained control values required to generate control on-off actions for tight power regulation. The inclusion of the disclosed anti-windup circuit in an SMPS may lead to hardware based overvoltage protection, reduced overall size and faster response to load changes. | 2018-03-01 |
20180062526 | CONTROL CIRCUIT AND CONTROL METHOD FOR SWITCH CIRCUIT AND SWITCHING-MODE POWER SUPPLY CIRCUIT - The present invention provides a control circuit and a control method for a switch circuit and a switching-mode power supply circuit. The control method comprises following steps: detecting an output voltage or an output current, and adjusting an upper limit value and a lower limit value of an inductor current according to a result of comparing the output voltage or the output current with the corresponding reference; and sampling the inductor current, and controlling a main switch transistor in the circuit to be switched off when a sampling current rises to the upper limit value, and controlling the main switch transistor to be switched on when the sampling current drops to the lower limit value. In the present invention, the inductor current is fast in response without overshoot, the output voltage drops very little, there is no overshoot in a process of voltage recovery, and circuit transient response is fast. | 2018-03-01 |
20180062527 | CONTROL METHODS AND SWITCHING MODE POWER SUPPLIES WITH IMPROVED DYNAMIC RESPONSE AND REDUCED SWITCHING LOSS - A control method is used in a switching mode power supply to improve dynamic load response and switching loss. A PWM signal is provided to control a power switch and has a switching frequency. A cross voltage of a transformer in the switching mode power supply is detected to provide a de-magnetization time. The switching frequency is controlled in response to a sleep signal and a compensation voltage, which is generated based on an output voltage of the switching mode power supply. The sleep signal is provided in response to the de-magnetization time and a current sense signal, a representative of a winding current of the transformer. The switching frequency is not less than a first minimum value if the sleep signal is deasserted, and not less than a second minimum value if the sleep signal is asserted. The second minimum value is less than the first minimum value. | 2018-03-01 |
20180062528 | INTERLEAVED RESONANT CONVERTER - Provided are methods and circuits for a resonant converter comprising at least one switch-controlled capacitor, wherein the at least one switch-controlled capacitor controls a resonant frequency of the resonant tank circuit. Provided are constant and variable switching frequency embodiments, and fill-wave and half-wave switch-controlled capacitor embodiments. Also provided are interleaved resonant converters based on constant and variable switching frequency, and full-wave and half-wave switch-controlled capacitor resonant converter embodiments. Interleaved embodiments overcome load sharing problems associated with prior interleaved resonant converters and enable phase shedding to improve light load efficiency. | 2018-03-01 |
20180062529 | CONVERTER AND CONTROL METHOD THEREOF - A converter includes a transformer, a main switch, an active clamp circuit, and a control circuit. The transformer includes a primary winding and a secondary winding, and is configured to receive an input voltage and output an output voltage to a load. The main switch is coupled between the primary winding and a primary ground terminal. The active clamp circuit includes an auxiliary switch and a clamp capacitor. The auxiliary switch is coupled to the clamp capacitor in series, and the active clamp circuit is coupled in parallel to the two terminals of the primary winding or the main switch, and is configured to clamp the voltage across the main switch when it is OFF. The control circuit outputs an auxiliary switch control signal to turn on the auxiliary switch when the voltage across the main switch is at its first peak of the resonant voltage. | 2018-03-01 |
20180062530 | EFFICIENT POWER SUPPLY VOLTAGE REGULATION FOR SYNCHRONOUS RECTIFIER CONTROLLER - A flyback converter is provided with a synchronous rectifier (SR) controller including a pulse linear regulator (PLR) charging path and an LDO charging path. The SR controller is configured to monitor the switching period and/or duty cycle of a power switch in the flyback converter to select between the PLR and LDO charging paths. | 2018-03-01 |
20180062531 | HYBRID CONTROL METHOD FOR AN ELECTRICAL CONVERTER - An electrical converter comprises at least one of an active rectifier and an inverter interconnecting an electrical source with an electrical load. A method for controlling an electrical converter comprises: receiving at least one estimated control variable, which is estimated from measurement values measured in the electrical converter; receiving at least one outer loop control variable provided by an outer control loop, the at least one outer loop control variable providing a desired steady-state operation point of the electrical converter; determining a control region based on a control error, which is a difference between the at least one estimated control variable and the at least one outer loop control variable, wherein the control region is defined by one or more intervals of one or more control variables; selecting control parameters based on the control region, wherein, when the control error is in an inner control region, first control parameters are selected, and, when the control error is outside the inner control region but inside an outer control region, second control parameters are selected; switching, based on the control error, between two and more control methods, which differ in control parameters, by predicting at least one reference control value based on a solution of a physical model of the electrical converter, which comprises the selected control parameters, the physical model being based on differential equations modelling the at least one estimated control variable and the solution being based on a constraint minimizing a difference between the at least one estimated control variable and the at least one outer loop control variable; and determining switching states of the electrical converter based on the reference control value. | 2018-03-01 |
20180062532 | POWER CONVERTER - A power converter in which a plurality of semiconductor switches are connected to a plurality of drive circuits configured to control states of the semiconductor switches includes a first semiconductor switch, a second semiconductor switch, a first drive circuit, a second drive circuit, and a multilayer substrate in which a first wiring, and a second wiring are disposed. In the multilayer substrate, a reference potential wiring and a control signal wiring of the first wiring are disposed in different layers at positions overlapping in a substrate lamination direction, a reference potential wiring and a control signal wiring of the second wiring are disposed in different layers at positions overlapping in the lamination direction, and a wiring length of a portion in which the first wiring and the second wiring overlap in the lamination direction is set to be shorter than either a wiring length of a portion in which the reference potential wiring and the control signal wiring of the first wiring overlap in the lamination direction or a wiring length of a portion in which the reference potential wiring and the control signal wiring of the second wiring overlap in the lamination direction. | 2018-03-01 |
20180062533 | POWER CONVERTER - A power converter in which a plurality of semiconductor switches are connected to a drive circuit configured to control states of the semiconductor switches, the power converter including: a plurality of semiconductor switches having the same reference potential; a drive circuit configured to control states of the plurality of semiconductor switches; and a multilayer substrate in which a wiring that connects the drive circuit and the plurality of semiconductor switches and includes a reference potential wiring and a control signal wiring is disposed, wherein, in the multilayer substrate, the reference potential wiring and the control signal wiring are disposed in different layers at positions overlapping in a substrate lamination direction, and within the wiring, in a common wiring portion from the drive circuit to a branch point of the wiring and a branch wiring portion from the branch point to each of the semiconductor switches, an impedance of the common wiring portion is set to be lower than an impedance of the branch wiring portion and wiring impedances of the branch wiring portions are matched to each other. | 2018-03-01 |
20180062534 | AC/DC CONVERTER CIRCUIT - An electric circuit for use with an AC power source includes a diode electrically connected to a line input from the AC power source, a transistor having a gate, a drain, and a source, wherein the drain is electrically connected to the diode, a zener diode electrically connected between the gate and the source of the transistor, a resistor electrically connected between the drain of the transistor and a neutral input from the AC power source, and a capacitor electrically connected in parallel with the resistor. | 2018-03-01 |
20180062535 | STATOR DEVICE FOR A LINEAR MOTOR, LINEAR DRIVE SYSTEM, AND METHOD FOR OPERATING A STATOR DEVICE - A linear motor comprises a stator, the stator comprising multiple drive coils and an intermediate circuit electrically conductively connected to each drive coil, the intermediate circuit being configured to exchange energy with each drive coil. The drive coils are arranged along the running rail, where at least one slide comprising a magnet acting as a rotor of the linear motor is movably arranged on the running rail. A controller is configured to independently control each drive coil, so that electrical energy is fed from the intermediate circuit into the drive coils, if a measured intermediate circuit voltage is greater or equal to a predetermined intermediate circuit voltage threshold value, where those drive coils are excluded from the feed-in of the electrical energy which are instantaneously being used for driving or braking the at least one slide and/or have a thermal load which exceeds a predetermined thermal load threshold value. | 2018-03-01 |
20180062536 | Converter Module For A Multi-Level Energy Converter - The present disclosure relates to converter modules. The teachings thereof may be embodied in converter modules for a multi-level energy converter. For example, a method for operating a converter module of a multi-level energy converter by means of a control unit and via a control connection may include: controlling the switching states of one of two converter module connections of the converter module and a switching unit incorporating the control connection. Two series-connected converter module capacitors connected to the switching unit respectively deliver a converter module capacitor voltage. The switching unit switches the converter module capacitor voltage of one of the converter module capacitors or a summed voltage of the series-connected converter module capacitors to the converter module connections, according to the respective switching state of the switching unit. | 2018-03-01 |
20180062537 | Hybrid Modulation Strategy for Multilevel Inverters - Hybrid modulation strategies are provided for single phase and three phase inverter topologies. According to hybrid modulation strategy embodiments, one line frequency period is divided into two operation modes based on the polarities of output voltage and output current. When polarities of the output voltage and output current are the same, a nominal voltage level modulation is used to generate the output voltage. When polarities of the output voltage and output current are opposite, a lower voltage level modulation is used to generate the output voltage. In one embodiment, a nominal voltage level modulation is five voltage level modulation, and a lower voltage level modulation is three or two voltage level modulation. Embodiments allow inverters to be constructed with fewer switches, and improve performance of multilevel inverters. The hybrid modulation strategies may be implemented in multilevel inverters such as active neutral point clamped (ANPC) and neutral point clamped (NPC) inverters. | 2018-03-01 |
20180062538 | INVERTER AND PHOTOVOLTAIC INSTALLATION - An inverter that is a micro-photovoltaic inverter includes a DC-DC converter on an input side of the inverter. The DC-DC converter has three output voltage levels. The inverter also includes an inverter element having at least three input voltage levels. The inverter element is electrically connected to the DC-DC converter. | 2018-03-01 |
20180062539 | ELECTRONIC INVERTER ASSEMBLY - A first driver portion comprises a set of first components mounted on or associated with a first circuit board. A second circuit board is spaced apart from the first circuit board. A second driver portion comprises a set of second components mounted on or associated with the second circuit board, where the first driver portion and the second driver portion collectively are adapted to provide input signals to the control terminal of each semiconductor switch of an inverter. A first edge connector is mounted on the first circuit board. A second edge connector is mounted on the second circuit board. An interface board has mating edges that mate with the first edge connector and the second edge connector. | 2018-03-01 |
20180062540 | POWER CONVERSION SYSTEM AND OPERATION METHOD FOR THE SAME - A power conversion system includes an input capacitor group, a first-converting circuit, a second-converting circuit, a first filter circuit, a second filter circuit, a third filter circuit and a control circuit. The input capacitor group receives a direct-current-input voltage. The first-converting circuit and the second-converting circuit are connected to the input capacitor group in parallel. The first filter circuit includes a first output inductor and a second output inductor. The second filter circuit includes a third output inductor and a fourth output inductor. The third filter circuit is connected between the first filter circuit and the second filter circuit. The control circuit separately controls the first-converting circuit and the second-converting circuit. The first output inductor is connected to the first-converting circuit, the second-converting circuit and the second output inductor. The third output inductor is connected to the second-converting circuit, the first-converting circuit and the fourth output inductor. | 2018-03-01 |
20180062541 | SEMICONDUCTOR DEVICE AND POWER CONVERSION DEVICE - A semiconductor device includes a unipolar switching element having a drain terminal, a gate terminal, and a source terminal, wherein a serial connection body of a capacitor and a resistor is connected between the drain terminal and the gate terminal. | 2018-03-01 |
20180062542 | POWER CONVERTER CONTROL DEVICE - In a first period having a first period length, first data and second data are alternately given to an inverter control unit. The first data has a first value indicating a length of time from the start point of time of the first period to a matching point of time as a point of time when a converter carrier takes a converter threshold value and an inverter threshold value corresponding to a second period having the first value as its length. The second data has a second value indicating a length of time from the matching point of time to the end point of time of the first period and an inverter threshold value corresponding to a second period having the second value as its length. | 2018-03-01 |
20180062543 | TRIBOELECTRIC GENERATOR USING SURFACE PLASMON RESONANCE - Disclosed are triboelectric generators using surface plasmon resonance. A triboelectric generator includes first and second electrodes spaced apart from each other, first and second electrification layers provided on the first and second electrodes, respectively, and a light source provided to irradiate light onto the second electrification layer. Herein, the second electrification layer includes a metallic material configured to generate surface plasmon resonance due to light of a desired wavelength, and the light source irradiates the light of the desired wavelength configured to generate the surface plasmon resonance, onto the second electrification layer. | 2018-03-01 |
20180062544 | MOTOR STARTERS USING PULSE SEQUENCES WITH SUBFUNDAMENTAL MODULATION - A motor starter includes a first switch configured to couple and decouple an AC power source to a motor, a second switch configured to bypass the first switch, and a control circuit configured to operate the first switch to modulate an AC voltage applied to the motor from the AC power source at a frequency that is less than a fundamental frequency of the AC voltage and to operate the second switch to bypass the first switch responsive to operation of the motor meeting a predetermined criterion. | 2018-03-01 |
20180062545 | CONTROL METHOD FOR BREAKING AN ELECTRIC MOTOR - A control method brakes an electric motor connected to a voltage source. The method involves, in each cycle, the supply of current to the motor, with a delay t | 2018-03-01 |
20180062546 | MOTOR DRIVING CIRCUIT, APPLICATION DEVICE INCLUDING THE SAME, AND BRAKING METHOD FOR A MOTOR - A motor driving circuit, an application device, and a motor braking method are provided. The driving circuit includes an inverter, a braking unit, and a MCU. The inverter is configured to drive a motor. The braking unit includes a sampling circuit, a discharge circuit, and a switch group. The MCU is connected to the sampling circuit, the discharge circuit, and the switch group, and is configured to control the sampling circuit to detect a voltage across the inverter and obtain a detected value when receiving the emergency signal, compare the detected value to a preset voltage or a preset voltage range, and transmit a control signal to activate the discharge circuit when the detected value is greater than the preset voltage or exceeds the preset voltage range. | 2018-03-01 |
20180062547 | SYSTEMS AND METHODS FOR REDUCING DC LINK VOLTAGE DYNAMICS WITH LIMITED ENERGY STORAGE ELEMENT - In an example embodiment, a controller includes a memory having computer-readable instructions stored therein and a processor. The processor is configured to execute the computer-readable instructions to determine a first set of inductance values for at least one load machine and second set of inductance values for a generator machine, determine a first set of gains for the at least one load machine based on the first set of inductance values and a regulator bandwidth, determine a second set of gains for the generator machine based on the second set of inductance values and the regulator bandwidth, and generate voltage commands for driving the at least one load machine and the generator machine based on at least the first and second sets of gains. | 2018-03-01 |
20180062548 | RESOLVER CORRECTION DEVICE AND SEMICONDUCTOR DEVICE - In order to correct a frequency deviation generated in an input signal to an analog filter according to the rotation of a rotor in a resolver, a resolver correction device includes a phase shifter which shifts the phase of a first phase signal of the resolver, with respect to the signals at least having two phases and more, detected by the resolver excited by an excitation signal of a carrier frequency fc; an adder which adds the phase-shifted first phase signal and a second phase signal, as a phase modulation signal with the excitation signal modulated by a rotation angle of the rotor in the resolver; a frequency error correction unit which generates a phase difference correction signal, based on a phase difference between the phase modulation signal of the resolver and the excitation signal; and an adjuster which calculates the adjusting amount of the phase shifter, based on the phase difference correction signal, in which the phase shifter adjusts a phase shift amount according to the adjusting amount. | 2018-03-01 |
20180062549 | Systems and Methods for Determining Motor Parameters - The present disclosure provides a system and method to determine at least one parameter of a motor, such as an inductance. The inductance can be determined, such as based on one or more digitally sampled motor winding currents. A digital filter can be applied to the digital samples such as to determine a slope of the motor winding currents. The digital filter can include a least squares fit that can be applied to the digital samples, such as to determine a slope of the motor winding currents. The least squares fit can be determined based on a computation of central tendencies such as an average value of time, an average value of current, an average value of the square of time, and the average value of the product of time and current. The average values can be determined recursively to provide improved computational speed. | 2018-03-01 |
20180062550 | METHOD FOR DETECTING STALLING OF AN ELECTRIC STEPPER MOTOR, AN ELECTRIC STEPPER MOTOR AND A HEATING, VENTILATION AND/OR AIR CONDITIONING SYSTEM WITH AN ELECTRIC STEPPER MOTOR - A Method for detecting stalling of an electric stepper motor ( | 2018-03-01 |
20180062551 | MOTOR DRIVING APPARATUS AND HOME APPLIANCE INCLUDING THE SAME - The present disclosure relates to a motor driving apparatus and a home appliance including the same. The motor driving apparatus in accordance with an embodiment of the present disclosure, comprises a DC-stage capacitor, a three-phase upper arm and lower arm switching element, an inverter to convert DC power from the DC-stage capacitor to an AC power by a switching operation and output the converted AC power to a motor, and a controller to control the inverter, wherein the controller controls the switching elements in the inverter based on a space vector-based pulse width variable, and controls a turn-on time of the switching elements to be shifted, wherein continuous first and second switching periods of the switching elements is changed to one switching period by shifting the a turn-on time of the switching elements. Accordingly, when the inverter is switched, noise can be reduced while reducing switching loss. | 2018-03-01 |
20180062552 | ELECTRIC MOTOR PROTECTION USING STATOR CURRENT AND VOLTAGE MEASUREMENTS - Monitoring conditions of an electric motor using stator current and voltage signals from power supplied to the motor is disclosed herein. The stator voltage and current signals may be used to calculate instantaneous power values which may be used to calculate slip. The slip may be used to monitor for a locked rotor condition during startup of the motor. The slip value may be used to provide thermal protection to the electric motor. | 2018-03-01 |
20180062553 | MONITORING HEALTH OF ELECTRICAL EQUIPMENT - Techniques for monitoring the health of a device comprising a motor or generator are described. An apparatus to monitor the health of the device includes a plurality of sensors to detect root-mean-square (RMS) current values for a plurality of stator windings of the device. The apparatus also includes a processor to receive the RMS current values from the plurality of sensors and compute a fault indicator based on the RMS current values. The fault indicator represents a level of current imbalance between the plurality of stator windings due to winding faults. | 2018-03-01 |
20180062554 | CIRCUIT AND CONTROL METHOD FOR THE SAME - An electronic control unit switches a switching circuit such that a switched reluctance motor has a first winding pattern, when, with respect to a boundary dividing a driving range of the switched reluctance motor into two ranges, a torque and a rotational speed of the switched reluctance motor that are determined according to an applied voltage are located in the first range on the low load side. The electronic control unit switches the switching circuit such that the switched reluctance motor has a second winding pattern, when the torque and the rotational speed of the switched reluctance motor are located in a second range different from the first range. | 2018-03-01 |
20180062555 | BOOSTER CONTROL DEVICE AND METHOD OF CONTROLLING VOLTAGE OF BOOSTER CONTROL DEVICE - A booster control device includes an output voltage detection unit that detects output voltage of a booster which changes the output voltage according to a phase difference; a storage battery voltage detection unit that detects storage battery voltage; and a booster control unit that performs feedback control on the output voltage of the booster in order for a difference between an output voltage command value to the booster and detected output voltage to be equal to zero. Further, the booster control unit includes a gain control unit that corrects a control gain according to the storage battery voltage on the basis of storage battery voltage dependency of an input-output characteristic representing booster output with respect to a phase difference of the booster, in order for the booster output to have the control gain uniquely determined by the phase difference and outputs a control phase difference to the booster. | 2018-03-01 |
20180062556 | Drive Control Unit for Motor - A drive control unit in which a drive control system for a motor is made redundant so that a motor having two coil sets is individually driven and controlled for each coil set includes an inverter substrate on which a first inverter circuit that drives each coil of a first coil set, and a second inverter circuit that drives each coil of a second coil set are formed; a control substrate on which a first control circuit that includes a microcomputer which controls the first inverter circuit, and a second control circuit that includes a microcomputer which controls the second inverter circuit are formed; and a housing in which the inverter substrate and the control substrate are arranged in parallel to each other. The first control circuit is positioned on the front surface side, and the second control circuit is positioned on the rear surface side of the control substrate. | 2018-03-01 |
20180062557 | SYSTEM AND METHOD FOR CAPACITOR FAULT ENERGY INTERRUPTION IN ADJUSTABLE SPEED DRIVES - An adjustable speed drive (ASD) circuit includes a rectifier bridge to convert an AC power input to a DC power, a DC link coupled to the rectifier bridge to receive the DC power, a DC link capacitor bank comprising at least first and second capacitors connected to the DC link, each capacitor having a capacitor voltage thereacross, and a protection circuit including a detection circuit configured to detect a short circuit on one or more of the first and second capacitors of the DC link capacitor bank and generate an action signal upon detection of a short circuit on one or more of the first and second capacitors of the DC link capacitor bank. The ASD circuit also includes an action circuit in operable communication with the detection circuit and configured to cause a short circuit across the DC link upon receiving the action signal from the detection circuit. | 2018-03-01 |
20180062558 | CLEAN ENERGY GENERATION, STORAGE, AND DISTRIBUTION SOLAR SHADE DEVICE AND METHOD OF USE THEREOF - A solar shade-energy device comprising a solar shade having a photovoltaic solar panel and a support structure; a means of mounting said solar shade; an energy storage-distribution module having a housing, an energy storage device, power conditioning circuitry, and one-or-more energy distribution ports; a means of detachably mounting said energy storage-distribution module onto said solar shade; and a disconnectable electrical interface means between said energy storage-distribution module and said photovoltaic solar panel is disclosed. A method of using said solar shade-energy device is also disclosed. | 2018-03-01 |
20180062559 | SYSTEMS AND METHODS FOR IMPROVED INSTALLATION OF PHOTOVOLTAIC ASSEMBLIES - PV assemblies for converting solar radiation into electrical energy, and methods of installation thereof, are disclosed herein. A PV assembly can include a mounting structure for mounting or supporting PV modules of a PV array. The PV assembly can include at least one PV module having several solar cells encapsulated within a PV laminate. A PV frame may at least partially surround the PV laminate. The PV assembly can further include at least one positioning or alignment device for facilitating alignment of PV modules in the array. The positioning or alignment device can include a support engagement feature for engaging the mounting structure and a module engagement feature for engaging the at least one PV module of the array. In various embodiments, the positioning or alignment device sets a predetermined distance between the mounting structure and at least one PV module. | 2018-03-01 |
20180062560 | SOLAR MOUNTING ASSEMBLIES - A structural support block cooperates with a cone-shaped protrusion in a roof flashing. The support block and protrusion have a through-hole allowing a fastener to secure the support block and flashing to a roof. Cooperation of the support block and the cone-shaped protrusion in the roof flashing diverts water, particularly on sloped surfaces. | 2018-03-01 |
20180062561 | END CLAMP FOR MOUNTING SOLAR MODULE TO RAIL - A solar power system may include rails, solar modules, and a plurality of clamps to secure the solar modules to the rails. An end clamp may be partially disposed inside a rail at an end of the rail. The end clamp may secure a solar module to the rail by coupling to the frame of the solar module. The end clamp may include a fastener that may be tightened to engage the end clamp and secure the solar module by holding it on top of the rail. The end clamp may establish an electrical grounding connection between the frames of the solar module and the rail. | 2018-03-01 |
20180062562 | PHOTOVOLTAIC TILE - A photovoltaic solar panel for forming a photovoltaic surface with adjacently arranged photovoltaic solar panels. The photovoltaic solar panel includes a body made of a rigid material, and first and second electrical connections. The first electrical connection includes an interposition element made of an elastomer material which, when interposed between the body of the photovoltaic solar panel and the body of an adjacent photovoltaic solar panel, participates in a securing process. during the laying of the photovoltaic solar panels, and absorbs relative movements caused by differential thermal expansion of elements of the photovoltaic solar panels during the use of the photovoltaic solar panels for the production of photovoltaic electricity. | 2018-03-01 |
20180062563 | TORQUE TUBE COUPLER - A solar-tracking photovoltaic (PV) system having several PV modules mounted on a torque tube is described. The torque tube may include several sections joined by a torque tube coupler. For example, the torque tube coupler may having a medial section and end sections to join to the torque tube sections. The medial section and the torque tube sections may have a same outer diameter. | 2018-03-01 |
20180062564 | SOLAR-TRACKING SYSTEM DRIVE HAVING AN OFFSET GEAR - A solar-tracking photovoltaic (PV) system having a motor drive vertically below a PV module, is described. In an example, the motor drive rotates a torque tube holding the PV module. The motor drive may include a gearbox having a worm drive, and a gearmotor having an offset gear. The offset gear may be coupled to a planetary gear train along an axis of a worm of the worm drive, and the offset gear may be coupled to a motor along a shaft axis offset vertically below the worm axis. Accordingly, the motor may be offset vertically below the worm drive, i.e., farther from the PV laminate than the worm drive, and a rotational clearance for the PV laminate may be increased. | 2018-03-01 |
20180062565 | PHOTOVOLTAIC SYSTEM BEARING ASSEMBLY - A photovoltaic (PV) system having a bearing assembly to support PV modules is described. In an example, the bearing assembly includes a pair of bearing supports having respective sub-rims. The sub-rims may have complementary arcuate seat surfaces, which when combined, define a curved seat rim to receive a bearing sleeve. Accordingly, the bearing supports may be mounted symmetrically about a pile such that the sub-rims combine to support the bearing sleeve, and a torque tube holding the PV modules may be mounted on the bearing sleeve. More particularly, the torque tube may be in sliding contact with the bearing sleeve, and a weight of the PV modules and torque tube may be evenly transmitted through the pair of bearing supports to a shear center of the pile. | 2018-03-01 |
20180062566 | MULTI-DRIVE SOLAR-TRACKING PHOTOVOLTAIC SYSTEM - A multi-drive solar-tracking photovoltaic (PV) system having several PV modules mounted on a torque tube is described. In an example, several motor drives input torque to the torque tube, and the motor drives are controlled by a single controller. The torque tube may include several sections joined by a torque tube coupler. For example, the torque tube coupler may having a medial section and end sections to join to the torque tube sections. The medial section and the adjoined torque tube sections may have a same outer diameter. | 2018-03-01 |
20180062567 | PHOTOVOLTAIC MODULE MOUNTING ASSEMBLY HAVING A RETAINER - A mounting assembly for a photovoltaic (PV) module, and systems including such mounting assemblies, are described. In an embodiment, the mounting assembly includes a top strut to support a PV module, and a retainer fixed relative to the top strut. The retainer may have an upright and retaining tab portion forming a receiving gap to receive the PV module. The retainer may constrain movement of the PV module mounted on the top strut. | 2018-03-01 |
20180062568 | PHOTOVOLTAIC MODULE CLIP - A photovoltaic (PV) module clip, and methods of fastening a PV module to a structural member using the PV module clip, are described. In an example, a PV module clip includes a toe portion interconnected with several legs by a neck portion. The toe portion may be inserted through several aligned holes of a PV module frame and a mounting assembly strut to an underside of the strut. The neck portion may extend upward from the toe portion through the aligned holes to the legs above the strut. The legs may extend around a portion of the strut in a tensioned state, and engage with a retaining feature to hold the legs in the tensioned state. Accordingly, the legs may clamp the PV module to the mounting assembly. | 2018-03-01 |
20180062569 | PHOTOVOLTIAC MODULE MOUNTING ASSEMBLY HAVING A PIN CONSTRAINT - A mounting assembly for a photovoltaic (PV) module, and systems including such mounting assemblies, are described. In an example, the mounting assembly includes a top support and a bottom support having respective mounting walls, and holes through the mounting walls. A pin assembly may extend through the holes in the mounting walls to constrain the supports, for example, relative to a torque member of a solar-tracking PV system. The pin assembly may include end collars to engage and distribute loading from the torque member. | 2018-03-01 |
20180062570 | MOUNTING STRUCTURE FOR SOLAR CELL MODULE AND MOUNTING TOOL - A mounting tool pressing a solar cell module against a seat member has a configuration including an upper surface abutment portion that abuts against the upper surface of the module, a side surface abutment portion that abuts against the side surface of the module, a base portion that extends from the side surface abutment portion, an insertion hole that penetrates through the base portion and through which the bolt is inserted, a bolt upper abutment portion that is a portion of an inner circumferential surface of the insertion hole against which an upper portion of an external thread portion of the bolt is made to abut, and a bolt lower abutment portion with which a lower portion of the external thread portion is made to abut, and a height H of the side surface abutment portion is set to be smaller than a height h | 2018-03-01 |
20180062571 | Apparatus for Securing a Solar Panel Rail Guide to a Support Bracket - In various representative aspects, an assembly for securing a support bracket to rail guide used for mounting and installing solar panels is provided. More specifically, the assembly provides a novel and improved nut with a serrated surface in combination with a t-bolt with a serrated surface that is capable of penetrating the respective oxidation surface layers of the bracket and the rail guide when installed. When installed, provides a mechanism for using the bracket to connect the rail guide to a flashing that is typically installed on a roof. An alternate embodiment of the nut also includes rotational and vertical stabilizing features that prevent the nut from moving along the bracket once it is secured. By employing the apparatus at various locations along the roof in a linear fashion, the rail support structure can be properly installed so that an array of solar panel modules to be installed. | 2018-03-01 |