28th week of 2022 patent applcation highlights part 64 |
Patent application number | Title | Published |
20220224204 | SLIP RING SYSTEM WITH IMPROVED COOLING - A slip ring system of an electrically excited dynamoelectric machine can be designed to be closed or open and includes a carrier segment configured to include a brush holder which includes a brush pocket for receiving a brush. The brush holder includes means for cooling the brush in the brush holder and/or for cooling the brush holder and has a surface-enlarging structure so as to enable a cooling air flow to be guided within the slip ring system and thereby cool the brush holder and/or brush pocket. | 2022-07-14 |
20220224205 | RESOLVER ASSEMBLY FOR HYBRID MODULE - A hybrid module comprising a housing, a torque converter, and a resolver assembly is provided. The torque converter comprises a turbine having a turbine shell including at least one blade attached thereto; an impeller having an impeller shell including at least one blade attached thereto; and an impeller hub attached to a radially extending end of the impeller shell. The resolver assembly comprises a rotor connected to an outer surface of the impeller hub and a stator connected to the housing. | 2022-07-14 |
20220224206 | PLANAR POWER MODULE WITH HIGH POWER DENSITY PACKAGING - A planar power module includes a second substrate arranged parallel to a first substrate, with the substrates respectively having a dielectric layer interposed between two conductive layers, such that one of the conductive layers of each substrate together forms parallel external conductive surfaces of the power module. The power module includes direct current (DC) bus bars, alternating current (AC) bus bars, and semiconductor switching dies arranged between the substrates. The dies are electrically connected to the bus bars, with each respective die electrically connected to a conductive layers of the first or second substrates. A polymer molding material partially surrounds the substrates and the switching dies. An electric powertrain system includes an electric machine, a propulsion battery pack, and a traction power inverter module (TPIM) having the power module. The power module is a three-phase full-bridge inverter circuit. An electric powertrain and motor vehicle use the power module. | 2022-07-14 |
20220224207 | DRIVE UNIT FOR ELECTRIC VEHICLE - Drive units for electric vehicles are provided. One example provides a drive unit for an electric vehicle including a housing having a first compartment and a second compartment separated from one another by a shared wall, an electrical inverter disposed within the first compartment and having a set of electrical output terminals, and an electric motor disposed within the second compartment and having electrical input terminals electrically coupled to the output terminals via one or more openings extending through the shared wall. | 2022-07-14 |
20220224208 | ROTARY ELECTRIC MACHINE AND MANUFACTURING METHOD FOR ROTARY ELECTRIC MACHINE - Improving the assemblability while improving the heat dissipation effect of the heat-sink. | 2022-07-14 |
20220224209 | ELECTRIC MOTOR WITH INJECTION MOULDED STATOR - An electric motor includes a printed circuit board, a rotor which is mounted rotatably about an axis of rotation, and a stator circumferentially surrounded by the rotor. The stator includes stator teeth and coils wound around the stator teeth, the coils being made from a winding wire with winding wire ends. The stator is overmolded by an injection molding, and a plug assembly is made on an upper side of the stator by the injection molding. The plug assembly includes contacts overmolded by the injection molding and defining a plug connection of an external power supply connection on one side and making direct electrical contact with the printed circuit board on another side. | 2022-07-14 |
20220224210 | DIRECT STARTING SYNCHRONOUS RELUCTANCE MOTOR ROTOR, MOTOR AND ROTOR MANUFACTURING METHOD - The present disclosure provides a direct starting synchronous reluctance motor rotor, a motor and a rotor manufacturing method. The direct starting synchronous reluctance motor rotor comprises: a rotor core provided with a plurality of slit grooves, two ends of each of the slit grooves being provided with a filling groove respectively to form a magnetic barrier layer, a first end of the filling groove being disposed adjacent to the slit groove, a second end of the filling groove being extended towards an outside of the rotor core, and an outer peripheral surface of the rotor core being provided with a notch communicated with the second end of the filling groove. By disposing notches and bevels at the end of the filling grooves, a reluctance torque of the motor can be increased, and then torque ripples generated by rotor and stator slots can be weakened mutually, thereby achieving the purpose of reducing the torque ripple of the motor and vibration noise of the motor, while improving an efficiency of the motor with the rotor and a starting capability of the motor. | 2022-07-14 |
20220224211 | MULTI-AXIAL WAVE ENERGY CONVERSION DEVICE - A multi-axial wave energy conversion device includes a main body and a plurality of permanent magnet generating assemblies. Each permanent magnet generating assembly includes at least one permanent magnet generator, an arm and a driving component. The at least one permanent magnet generator includes a stator structure and a rotor structure capable of rotating or swinging relative to the stator structure. The at least one permanent magnet generator is disposed or coupled between the main body and the arm or disposed or coupled between the arm and the driving component, so that the rotor structure is driven to rotate or swing relative to the stator structure when the arm moves relative to the main body or the driving component moves relative to the arm. | 2022-07-14 |
20220224212 | PERMANENT MAGNET GENERATOR FOR OCEAN ENERGY CONVERSION - A permanent magnet generator for ocean energy conversion includes a stator structure and a rotor structure. The stator structure includes a stator body whereon a plurality of stator slots are formed. The rotor structure includes a rotor body whereon a plurality of rotor slots are formed. The rotor body is disposed inside the rotor body in a swinging or rotatable manner. A ratio of a number of the rotor slots to a number of the stator slots is 8 to 9. The number of the rotor slots is at least equal to 64. The number of the stator slots is at least equal to 72. The permanent magnet generator requires a low speed/angle of a swinging/rotating movement of the rotor body relative to the stator body to generate electricity, and therefore, it facilitates electricity generation from ocean energy. | 2022-07-14 |
20220224213 | ACTUATOR - In an actuator, damper members which connect a movable member and a fixed member are arranged at two places between the end portion of the shaft of the movable member on an L1 side and the opening portion of the first holder of the fixed member and between the end portion of the shaft of the movable member on an L2 side and the opening portion of a second holder. Each of the damper members includes a gel damper member serving as a connection member which is continuously arranged in a gap in a radial direction between the movable member and the fixed member over the entire circumference. In the gel damper member, an inner circumferential portion is fixed to the shaft through a cylindrical first member, and an outer circumferential portion is fixed to the fixed member through a cylindrical second member. | 2022-07-14 |
20220224214 | LINEAR ACTUATOR - A linear actuator includes a controlling module, a driving module and a transmission module. The controlling module includes a circuit board, two micro switches and a socket. The two micro switches are electrically connected to the circuit board. A first end of the socket is electrically connected to the circuit board, and a second end of the socket has a plurality of first connecting parts. The driving module is electrically connected to the controlling module and includes a motor and a connecting mount. The connecting mount is electrically connected to the motor and has a plurality of second connecting parts. The second connecting parts are detachably connected to the first connecting parts so as to electrically connect the connecting mount to the socket. The transmission module is connected to the motor and driven by the motor. | 2022-07-14 |
20220224215 | MAGNETIC COUPLER - Apparatuses, systems, and methods of use for a magnetic coupling device is disclosed. The magnetic device may have a plurality of magnets to create a magnetic field to the devices enclosed within the device. The coupling device may have a housing that encloses and/or partially surrounds one or more rotatable shafts. The coupling device may couple an output shaft from a motor to an input shaft of a generator. The coupling device may have an electric coil that when energized may vary any applied magnetic field to the rotatable shafts. The magnetic device may have a first plurality of magnets positioned at a first radial position and a second plurality of magnets positioned at a second radial position, with the first magnets being rotatable and the second magnets being stationary. Multiple magnetic coupling devices may be coupled together in series to provide increased magnetic fields to the enclosed system. | 2022-07-14 |
20220224216 | Pre-charging Bootstrapped FET Gate - Circuitry for bootstrapping and precharging a gate of a field-effect transistor (FET) is disclosed. In one embodiment, an apparatus includes a first transistor coupled to a switching node and further coupled to receive a supply voltage from a supply voltage node, and a second transistor coupled between the switching node and a ground node, wherein the first and second transistors are of a same type. A precharge circuit is configured to precharge a gate terminal of the first transistor to a voltage that is less than a supply voltage on the voltage supply node. The apparatus also includes a bootstrap circuit. Subsequent to precharging the gate terminal of the first transistor, the bootstrap circuit is configured to cause activation of the first transistor by charging the gate terminal to a voltage greater than the supply voltage. | 2022-07-14 |
20220224217 | ADAPTIVE GATE DRIVE FOR A POWER SWITCH TRANSISTOR IN A SWITCHING POWER CONVERTER - A gate drive control circuit is provided that charges a gate voltage of a power switch transistor during a power switch transistor on-time period. During a first portion of the on-time period, the gate drive control circuit charges the gate voltage through a relatively-low resistance. During a second portion of the on-time period, the gate drive control circuit charges the gate voltage through a relatively-high resistance. Finally, during a third portion of the on-time period, the gate drive control circuit charges the gate voltage through another relatively-low resistance. | 2022-07-14 |
20220224218 | INTEGRATED CIRCUIT AND POWER SUPPLY CIRCUIT - An integrated circuit for a power supply circuit configured to generate an output voltage of a target level from an alternating current (AC) voltage. The power supply circuit includes a first capacitor and an inductor configured to receive a voltage according to the AC voltage, and a transistor configured to control an inductor current flowing through the inductor. The integrated circuit is configured to switch the transistor, and includes: an identification circuit configured to identify whether a voltage level of an effective value of the AC voltage is a first level or a second level, and a signal output circuit configured to output a driving signal to drive the transistor, and correct the driving signal to thereby correct the input current, in response to the voltage level of the effective value being the first level and the second level, respectively. | 2022-07-14 |
20220224219 | MITIGATION OF BATTERY OUTPUT VOLTAGE RIPPLE UNDER PULSE LOAD - A battery powered electronic device can include a battery to power one or more loads, a first DC-DC converter having an input coupled to the battery and an output, and a second DC-DC converter cascaded with the first DC-DC converter and coupled to a second load subject to pulsed operation. The first and second converters may be configured so as to isolate the one or more loads from transients associated with the pulsed operation of the second load. The second converter may have an input coupled to the output of the first converter and an output coupled to the second load. Alternatively, the second converter may be a bidirectional converter having first terminals coupled to the output of the first converter and second terminals coupled to an energy storage device. | 2022-07-14 |
20220224220 | POWER SUPPLY APPARATUS AND CONTROL METHOD OF POWER SUPPLY APPARATUS - A power supply apparatus ( | 2022-07-14 |
20220224221 | SNUBBER APPARATUS AND POWER CONVERSION APPARATUS - Provided is a snubber apparatus comprising: N parallel charge paths, each of which has a positive-side capacitor, a first diode, and a negative-side capacitor sequentially connected in series between a positive-side terminal and a negative-side terminal, and that allows current to flow from the positive-side terminal's side to the negative-side terminal's side; and N+ | 2022-07-14 |
20220224222 | POWER CONVERSION APPARATUS - A power conversion apparatus comprises a first power supply rail, a second power supply rail, a power switching branch, and a circuit arrangement for recycling energies stored in parasitic reactive elements. The parasitic reactive element may be a parasitic inductor in series connection with a power switch of a power switching circuit or a parasitic capacitance across a semiconductor power switch. The circuit arrangement may comprise a clamper branch and/or a circuit arrangement comprising an auxiliary semiconductor switch. The clamper branch is for recycling energy stored in a parasitic inductor. An auxiliary semiconductor switch is connected in parallel with an output diode of a power switching circuit and operable by a control circuit to recycle energy stored on the parasitic capacitor. | 2022-07-14 |
20220224223 | Power Adapter of light string assembly having Power factor correction circuit - An adapter of a light string assembly contains: a casing, a plug arranged on the casing, an energy saving circuit accommodated in the casing. The energy saving circuit has a filtration device, a rectifier, a power factor correction (PFC), a transformer, and a feedback circuit which are arranged from a voltage input end to a voltage output end of the energy saving circuit in order. The PFS is defined between the rectifier and the filtration device so as to obtain quasi-sine currents from a power, wherein the energy saving circuit has PFC with a line voltage, and a value of a power factor is close to 1, such that the PFS adjusts and corrects a power factor by way of the transformer, thus reducing an input loss and saving energy. | 2022-07-14 |
20220224224 | MULTIPHASE INTERLEAVED FORWARD POWER CONVERTERS INCLUDING CLAMPING CIRCUITS - A multiphase interleaved forward power converter includes an inductor and first and second subconverter comprising respective transformers. The converter also includes first and second drives configured to respectively operate the first and second subconverters with cycling periods comprising a conduction period, a reset period, and an idle period. The first and second drives are also configured to phase shift the cycling periods in each subconverter such that the conduction period of the subconverter is at least partially complementary to the idle period of the other subconverter. The second drive also clamps a voltage across a winding of the transformer of the first subconverter to substantially prevent a first resonance voltage from propagating in the first subconverter during the idle period of the first subconverter. | 2022-07-14 |
20220224225 | CONVERTER AND ON-BOARD CHARGER - This application provides a converter and an on-board charger, to avoid a short-circuit fault of the converter while inhibiting a surge impact. The converter includes: a power factor correction PFC circuit, a surge protection circuit, and a switch circuit. The PFC circuit is configured to: convert a first component of a first alternating current received by an alternating current terminal of the PFC circuit into a first direct current, and output the first direct current through a direct current terminal of the PFC circuit; and convert a second direct current received by the direct current terminal of the PFC circuit into a second alternating current, and output the second alternating current through the alternating current terminal of the PFC circuit. | 2022-07-14 |
20220224226 | VOLTAGE COMPENSATION METHOD AND DEVICE OF VOLTAGE REDUCING CIRCUIT - Disclosed are a voltage compensation method and device of a voltage reducing circuit. The voltage compensation method includes: determining a capacitance value of each capacitor and a resistance value of each resistor in a voltage compensation circuit according to a voltage compensation expectation of the voltage reducing circuit; determining each zero and each pole of a transfer function of the voltage compensation circuit according to the capacitance value of each capacitor and the resistance value of each resistor; setting each capacitor and the resistor not in direct connection with the capacitor in series to have a positive temperature coefficient, and setting the resistor in direct connection with the capacitor in series to have a negative temperature coefficient; and compensating voltage for the voltage reducing circuit by using the voltage compensation circuit to output a rated voltage. | 2022-07-14 |
20220224227 | SUPPLY VOLTAGE GENERATING METHOD FOR A DRIVER CIRCUIT IN A POWER SYSTEM - A supply voltage generating circuit and method for a power system. The power system has a power input terminal to receive an input voltage, a system output terminal to provide a system voltage, a switching circuit, a bootstrap capacitor, and a first driver circuit with a power terminal. The switching circuit works in a buck mode to convert the input voltage to the system voltage, or in a boost mode to convert the system voltage to a boost output voltage. The bootstrap capacitor provides a bootstrap voltage at a bootstrap terminal. The method is generating an input pump voltage based on the input voltage and the boost output voltage, generating a first supply voltage based on the bootstrap voltage and the input pump voltage, and providing the first supply voltage to the power terminal of the first driver circuit. | 2022-07-14 |
20220224228 | DRIVING CIRCUIT FOR SWITCHES USED IN A CHARGE PUMP - A power converter includes a charge pump in which transistors transition between conducting and non-conducting states thereby causing said pump capacitors to be interconnected in different arrangements at different times. Among the transistors is one that transitions into a conducting state when a source and gate of that transistor are at equal potentials. | 2022-07-14 |
20220224229 | POWER CONVERTER - An apparatus for power conversion includes a transformation stage for transforming a first voltage into a second voltage. The transformation stage includes a switching network, a filter, and a controller. The filter is configured to connect the transformation stage to a regulator. The controller controls the switching network. | 2022-07-14 |
20220224230 | BOOST CONVERTER CIRCUIT WITH FEEDFORWARD PATH FOR IMPROVED LOAD REGULATION - An example power supply circuit includes a boost converter and a feedback control circuit. The boost converter generally includes an inductive element coupled between an input voltage node and a switching node, a first switch coupled between the switching node and a reference potential node, a second switch or a diode coupled between the switching node and an output voltage node. The feedback control circuit has a first input coupled to the output voltage node and has an output coupled to at least a control input of the first switch. The feedback control circuit generally includes a voltage node configured to influence a duty cycle of the boost converter; and a feedforward path coupled to the voltage node and configured to have a voltage signal derived from at least one of an input voltage at the input voltage node or an output signal at the output voltage node. | 2022-07-14 |
20220224231 | POWER CONVERSION AND FLYING CAPACITOR IMPLEMENTATIONS - An apparatus such as a power converter includes a first flying capacitor, a second flying capacitor, etc., an inductor, and a network of switches. The network of switches controls conveyance of energy from the multiple flying capacitors to the inductor. The inductor converts the received energy into an output voltage to power a load. A magnitude of the respective voltage on each of the flying capacitors is substantially the same. | 2022-07-14 |
20220224232 | POWER SUPPLY UNIT - To provide a power supply unit configured to determine the boundary between the operation modes (continuous mode and discontinuous mode) of a converter with high accuracy. The power supply unit is a power supply unit wherein the controller controls a value of output current of the power supply by controlling a duty ratio by switching the second switch; wherein the controller detects the current value of the reactor acquired by the current sensor, at a frequency of at least n (n is an integer of 2 or more) times in a cycle of the switching. | 2022-07-14 |
20220224233 | Buck-Boost Switching Regulator Having Bypass Mode and Control Method Thereof - A buck-boost switching regulator includes: a power switch circuit including an input switch unit and an output switch unit which switch a first terminal and a second terminal of an inductor for buck-boost conversion; at least one low dropout regulator correspondingly coupled to at least one output high side switch in the output switch unit to correspondingly convert at least one low dropout voltage into at least one output voltage; and a bypass control circuit configured to operably generate a bypass control signal according to a conversion voltage difference between the input voltage and the corresponding low dropout voltage; wherein when the corresponding conversion voltage difference is lower than a reference voltage, the bypass control signal controls a corresponding bypass switch to electrically connect the input voltage with the corresponding low dropout node. | 2022-07-14 |
20220224234 | Control Circuit and Method for Switching Power Converters - An apparatus includes a first conversion unit configured to convert a ramp voltage signal into a ramp current signal flowing through a first resistor, a second conversion unit configured to convert a feedback voltage signal into a feedback current signal flowing through the first resistor, a third conversion unit configured to convert a control voltage signal generated by an error amplifier into a control current signal flowing through a second resistor, and a comparator having a first input coupled to the first resistor and a second input coupled to the second resistor, wherein an output of the comparator determines a turn-on of a high-side switch of a power converter. | 2022-07-14 |
20220224235 | CONTROL METHOD AND CONTROL DEVICE OF ISOLATED CONVERTER - The present invention provides a control device for an isolated converter, including a comparison module, which receives a load percentage of the isolated converter, compares the load percentage with a first preset threshold and a second preset threshold, and outputs a comparison result; and an adjustment module, which receives the comparison result and adjusts a switching frequency of a switching transistor of the isolated converter based on the comparison result, wherein when the load percentage is not greater than the first preset threshold value, the switching frequency is set to a first frequency value to prevent magnetic saturation of a transformer of the isolated converter, and when the load percentage is greater than the second preset threshold value and in a stable state, the switching frequency is set to a second frequency value, so that the temperature of the isolated converter does not exceed the maximum allowable temperature, wherein the first preset threshold is less than or equal to the second preset threshold, and the first frequency value is greater than the second frequency value. | 2022-07-14 |
20220224236 | MAGNETIC INTEGRATION OF THREE-PHASE RESONANT CONVERTER AND ACCESSORY POWER SUPPLY - A power system includes a traction battery, an auxiliary battery, and a 3-phrase resonant DC/DC converter that permits charge and discharge of the traction battery, and includes a 3-phase transformer, 3-phase matching capacitors, and 3-phase resonant inductors. The vehicle also includes auxiliary circuitry that permits charge of the auxiliary battery with power from the traction battery, and is magnetically coupled with the 3-phase transformer. | 2022-07-14 |
20220224237 | METHOD FOR CONTROLLING A DC-DC CONVERTER FOR A TWO-WAY ELECTRICAL STORAGE BATTERY CHARGER - A control method for controlling the frequency of the input voltage of a DC-DC converter of a bidirectional electrical charger, operating in discharge mode, includes: defining a set voltage value, calculating a control frequency value of the DC-DC converter, obtained by inverting the gain of the DC-DC converter, as a function of an output battery voltage, a set input power, and the set input voltage; finely adjusting the DC bus by increasing/decreasing the frequency, and applying the control frequency thus calculated to the converter. | 2022-07-14 |
20220224238 | DEVICES, SYSTEMS, AND METHODS FOR POWER SUPPLIES - At least one example embodiment is directed to a method for controlling a rectifier. The method includes applying a first control signal to a first switch of the rectifier to cause a first current to flow through a first inductor of the rectifier, applying a second control signal to a second switch of the rectifier to cause a second current to flow through a second inductor. The second control signal and the first control signal have a phase difference. The method includes detecting that the first current falls to a first minimum value at a first time, detecting that the second current falls to a second minimum value at a second time, determining a first difference between the first time and the second time, and determining whether to adjust the second control signal based on the first difference to bring the phase difference closer to a target phase difference. | 2022-07-14 |
20220224239 | METHODS AND APPARATUS TO INCREASE AN OPERATIONAL RANGE OF A DUTY CYCLE OF A TWO-SWITCH FLYBACK CONVERTER - An example apparatus includes: a first diode having a first diode terminal; a transformer having a transformer terminal; a second diode having a second diode terminal and a third diode terminal, the second diode terminal coupled to the transformer terminal; a first switch having a first current terminal and a second current terminal, the first current terminal coupled to the first diode terminal, the second current terminal coupled to the third diode terminal; a second switch having a third current terminal, the third current terminal coupled to the second diode terminal and the transformer terminal; a capacitor having a first capacitor terminal and a second capacitor terminal, the first capacitor terminal coupled to the second current terminal; and a third diode having a fourth diode terminal and a fifth diode terminal, the fourth diode terminal coupled to the first capacitor terminal, the fifth diode terminal coupled to the capacitor. | 2022-07-14 |
20220224240 | CASING FOR ELECTRICAL APPARATUS AND POWER CONTROL APPARATUS | 2022-07-14 |
20220224241 | POWER SUPPLY MODULE - The disclosure provides a power supply module, including a transformer including magnetic core and winding, and a rectifier circuit electrically connected to the winding, wherein the magnetic core further comprises: a first and a second cover plate opposite to each other; a first magnetic column; and a second magnetic column having a magnetic flux in opposite direction to that of the first magnetic column, the first and second magnetic column connected between the first and the second cover plate; the winding further includes: a first winding wound onto the first magnetic column; and a second winding wound onto the second magnetic column, wherein the first and second winding have a shared winding portion at least partially located between the first and second magnetic column; the rectifier circuit includes a plurality of rectifier components including first to fourth rectifier component electrically connected to form a full bridge rectifier circuit. | 2022-07-14 |
20220224242 | POWER SUPPLY UNIT WITH AUTONOMOUS INPUT POWER LIMITING - A power supply receives AC power and generates a DC output voltage. The power supply may be divided into a primary section that converts AC power to a relatively high DC voltage. A secondary section converts this relatively high DC voltage into a well-regulated lower DC voltage. In an embodiment, the current and/or power supplied by the primary to the secondary side is used by the secondary side in a closed-loop feedback system to limit the current drawn by the secondary side to a configurable value. | 2022-07-14 |
20220224243 | POWER CONVERTER AND METHOD FOR OPERATING THE POWER CONVERTER - A method operates a power converter having power converter arms, which are switchable between in each case an AC voltage side and a DC voltage side or connectable to phase lines of an AC voltage power supply system. Each power converter arm has a series circuit of switching modules each having a plurality of semiconductor switches and an energy store, in which at least one temperature value for the power converter is determined. A setpoint current limitation value is determined taking into consideration the temperature value, and a setpoint current value is determined taking into consideration the setpoint current limitation value. The temperature value, the arm setpoint current value, the arm actual current value and/or the arm setpoint current limitation value is time-integrated to form an arm integral value. When the arm integral value reaches or exceeds a predetermined arm integral threshold value, a protective measure is performed. | 2022-07-14 |
20220224244 | GaN-BASED MULTIPORT MULTILEVEL CONVERTER/INVERTER - A multiport multilevel converter/inverter includes a connection point with a two-line connection. The multiport multilevel converter/inverter also includes a capacitor electrically coupled across the two-line connection of the connection point. The multiport multilevel converter/inverter also has a first flying capacitor multilevel path with a first external two connection port configured to connect outside of the multiport multilevel converter/inverter, and a first interface conveying DC power and that is electrically coupled to the connection point. The multiport multilevel converter/inverter also includes a second flying capacitor multilevel path with a second external two connection port configured to connect outside of the multiport multilevel converter/inverter, and a second interface conveying DC power and that is electrically coupled to the connection point. | 2022-07-14 |
20220224245 | MULTILEVEL POWER CONVERTER CIRCUIT - The present invention relates, without being limited thereto, to the field of power electronics and non-linear control, and in particular to a topology structure of a multilevel power converter of the type of a cascaded bridge. | 2022-07-14 |
20220224246 | CURRENT CONTROL DEVICE AND POWER CONVERSION SYSTEM EMPLOYING SAME - A current control device and a power conversion system employing the current control device are provided. The current control device controls N power conversion unit(s), where N is a positive integer. The N power conversion units are connected in parallel when N is greater than 1. Each power conversion unit includes a signal input terminal and a current-controlled output terminal electrically connected to an external circuit. The current control device includes a first current sensor and an error compensator. The first current sensor samples a current flowing through the external circuit and acquires a sampling value. The error compensator receives the sampling value and a reference value and generates a compensation value accordingly, and outputs N current command(s) to the N power conversion unit(s) respectively according to the reference value and the compensation value. | 2022-07-14 |
20220224247 | MULTIPHASE INVERTER APPARATUS HAVING HALF-BRIDGE CIRCUITS AND A PHASE OUTPUT LEAD FOR EACH HALF-BRIDGE CIRCUIT - A multiphase inverter apparatus includes: an insulating substrate; at least one low voltage bus and at least one high voltage bus on a first surface of the insulating substrate; a plurality of half-bridge circuits, each half-bridge circuit being electrically coupled between a respective one of the at least one low voltage bus and a respective one of the at least one high voltage bus; and a phase output lead for each half-bridge circuit. For each half bridge circuit, the phase output lead is arranged on and electrically coupled to at least one packaged low side switch and at least one packaged high side switch of the half bridge circuit such that each packaged low side switch and each packaged high side switch is arranged vertically between the phase output lead and the first surface of the insulating substrate. | 2022-07-14 |
20220224248 | POWER CONVERSION DEVICE - In a first section of a power conversion device, a second switch is turned off, a first duty drec and a third duty dz are selected so that a direct current voltage Vdc to be input to a current source becomes equal to a direct current voltage command value Vdc*, a first conversion operation of supplying power from the voltage source to the current source is performed, and the capacitor is charged by the rectified voltage via the clamp diode. In a second section of the power conversion device, a first switch is turned off, a second duty dc and the third duty dz are selected so that the direct current voltage Vdc to be input to the current source becomes equal to the direct current voltage command value Vdc*, and a second conversion operation of supplying power from the capacitor to the current source is performed. | 2022-07-14 |
20220224249 | SPACE VECTOR PULSE WIDTH MODULATION METHOD FOR ANY LEVEL CASCADED H-BRIDGE INVERTER - The invention proposed a space vector pulse width modulation (SVPWM) method for any level cascaded H-bridge inverter. The multilevel space vector diagram is re-divided, and the coordinates of the nearest three vectors (NTVs) are directly obtained by judging the position of the reference vector. The duty cycles of the NTVs is calculated through additional vector which is equivalent to the reference vector. Then, the switching states are obtained by zero-sequence component and coordinate transformation, and the desired reference vector is synthesized for the SVPWM modulation. The invention realizes multilevel modulation in Cartesian coordinates without any iterative calculation, and the calculation is independent of the level number. Furthermore, the locating of the reference vector and the calculation of the duty cycles are simplified, and the calculation complexity is reduced. | 2022-07-14 |
20220224250 | BIDIRECTIONAL POWER CONVERTER HAVING INTERMEDIATE CIRCUIT - A power converter including a three-phase alternating current input and output, a first power converter stage having a first input and output and a second input and output, an intermediate circuit, a second power converter stage having a first input and output and a second input and output and a direct current input and output, wherein the first input and output of the first power converter stage is electrically connected to the three-phase alternating current input and output, and the second input and output of the first power converter stage is electrically connected to the intermediate circuit. | 2022-07-14 |
20220224251 | ELECTROSTATIC ACTUATOR HAVING MULTILAYER STRUCTURE - Provided is a stacked electrostatic actuator capable of maintaining insulation performance between conductor layers even when an elastic layer is deformed due to a creep phenomenon. An electrostatic actuator includes a plurality of electrode films that are stacked and bonded, wherein each of the electrode films has a five-layer structure including an elastic layer, an insulating layer, a conductor layer, an insulating layer, and an elastic layer, a Young's modulus of a material for forming the elastic layers is smaller than a Young's modulus of a material for forming the insulating layers, and a spring constant of a material for forming the elastic layers increases as the electrode films extend in a stacking direction. | 2022-07-14 |
20220224252 | STACKED ELECTROSTATIC ACTUATOR - A stacked electrostatic actuator exhibits a sufficient contraction force even when pulled by a large external force and the contraction rate thereof does not decrease even under a light load. A stacked electrostatic actuator includes a plurality of electrode films each including a three-layer structure including a first insulating layer, a conductor layer, and a second insulating layer. | 2022-07-14 |
20220224253 | Electrostatic Device and Method for Manufacturing Electrostatic Device - This vibration-driven energy harvesting element includes a fixed part, a movable part, an elastic support part that is integrally formed with the movable part and that elastically supports the movable part, and a glass base part in which the fixed part and the elastic support part are anodically bonded to each other in a separated state. | 2022-07-14 |
20220224254 | DIFFERENTIAL COMPLIANT DISPLACEMENT REDUCER - The invention discloses a differential compliant displacement reducer, and relates to three technical solutions with similar working principles. The three technical solutions have the following characteristics: firstly, the three technical solutions all relate to an outer frame and all belong to a differential compliant displacement reducer circumferentially formed by extending upward and downward along both ends of the driver, and the working principle is similar; secondly, the differential motion of the three technical solutions comes from the difference caused by deformation of the upper and lower or inclined upper and lower deformable parts of the driver in the differential compliant displacement reducer; thirdly, compared with a traditional displacement amplifier, the three technical solutions all belong to the displacement reducer, the structure is simpler than that of the existing displacement amplifier; and fourthly, the three technical solutions can be matched with a macro-motion platform. | 2022-07-14 |
20220224255 | TRANSPORT SYSTEM, PROCESSING SYSTEM, AND ARTICLE MANUFACTURING METHOD - A transport system includes a mover, a stator, and a control unit. The mover moves in a first direction. The stator includes a plurality of coils arranged in the first direction and applies force to transport the mover in the first direction while using the plurality of coils, to which current is applied, to levitate the mover in a second direction intersecting the first direction. The control unit controls the current applied to the plurality of coils to control operation of the mover. The control unit controls the current applied to the plurality of coils using machine difference information of the mover to control an attitude of the mover while the mover is being levitated. | 2022-07-14 |
20220224256 | Magnetic Levitation Gravity Compensation Device - The disclose provides a magnetic levitation gravity compensation device, including: a first magnetic steel, which is cylindrical; a second magnetic steel, which is cylindrical, arranged in the first magnetic steel and radially spaced from the first magnetic steel; and at least one end magnetic steel, which is cylindrical, and is located on at least one of two axial ends of the second magnetic steel and axially spaced from the two axial ends of the second magnetic steel, a center line of the end magnetic steel is configured to coincide with a center line of the second magnetic steel, and a cylinder wall thickness of the end magnetic steel is smaller than that of the second magnetic steel, wherein a magnetization direction of the first magnetic steel is a radial direction, and a magnetization direction of the second magnetic steel and the end magnetic steel is an axial direction. | 2022-07-14 |
20220224257 | ROTATING BODY DRIVE SYSTEM - A drive system establishes a normal state in which a first switch is ON and a gang switch is OFF, in the case where it is determined that there is no abnormality in the state of a first rotating body driven by a first motor. In this normal state, the first motor is driven by a first inverter, while a second motor is driven by a second inverter. It the case where it is determined that there is abnormality in the state of the first rotating body, a first countermeasure state is established in which the first switch is OFF and the gang switch is ON. In this first countermeasure state, the second motor is driven by both the first inverter and the second inverter. | 2022-07-14 |
20220224258 | CONTROLLING BRUSHLESS MOTOR COMMUTATION - A computer implemented method for controlling commutation of a brushless DC (BLDC) motor. The method includes controlling a switching array to drive the BLDC motor at a first commutation, receiving and monitoring power consumption signals indicating power consumption of the BLDC motor, determining whether the power consumption exceeds a first threshold value, and controlling the switching array to drive the BLDC motor at a second commutation when the power consumption exceeds the first threshold value. | 2022-07-14 |
20220224259 | ENCODERLESS MOTOR WITH IMPROVED QUANTIZATION AND METHODS OF USE AND CALIBRATION - A DC electric motor having a stator mounted to a substrate, the stator having a coil assembly having a magnetic core, a rotor mounted to the stator with permanent magnets distributed radially about the rotor, the permanent magnets extending beyond the magnetic core, and sensors mounted to the substrate adjacent the permanent magnets. During operation of the motor passage of the permanent magnets over the sensors produces a substantially sinusoidal signal of varying voltage substantially without noise and/or saturation, allowing an angular position of the rotor to be determined from the sinusoidal signals by utilizing a transformation matrix or piece-wise algorithm applied in substantially linear portions of the sinusoidal signals without requiring use of additional hardware encoder or position sensors and without requiring noise-reduction or filtering of the signal. | 2022-07-14 |
20220224260 | METHOD FOR DETECTING THE ROTARY ANGLE POSITIONS OF ROTATING PARTS OF A WIPER MOTOR, AND WIPER MOTOR - The invention relates to a method for detecting the rotary angle positions (α, β) of rotating parts of a wiper motor, the wiper motor having a brushless electric motor as a first part which comprises a rotor rotating about a first axis of rotation and which drives a gear wheel as a second part which rotates about a second axis of rotation and which comprises a driven shaft, and the rotary angle positions (α, β) of the two rotating parts being detected by means of two sensor devices each having a signal generating element and a sensor element for detecting a changing physical parameter of the signal generating element. | 2022-07-14 |
20220224261 | METHOD AND DEVICE FOR DETECTION OF CONDITION OF BRUSHLESS MOTORS AND GENERATORS - A method and device for determining the position of a rotor in a brushless motor is provided. The method generally includes: injecting electrical signals into a stator of the brushless motor; measuring scattering parameters reflected back from the stator, wherein the scattering parameters are influenced by the near-field dynamics impaired by the motor; and comparing the measured scattering parameters to a predetermined data set of scattering parameters for known rotor positions to determine the position of the rotor. The method and device is also suitable for determining a condition of a motor or a generator. | 2022-07-14 |
20220224262 | ELECTRIC ACTUATOR DEVICE AND CONTROL METHOD THEREOF - An electronic actuator device and a control method thereof are provided. The electronic actuator device includes a plurality of first and second power switches and a driving circuit. The first power switches respectively provide a first reference voltage to a plurality of voltage receiving ends of a motor respectively according to a plurality of first control signals. The second power switches respectively provide a second reference voltage to the voltage receiving ends respectively according to a plurality of second control signals. The driving circuit generates the first and second control signals. In a braking operation, the first power switches are turned on during a plurality of first time periods, and the second switches are turned on during a plurality of second time periods that are alternate and non-overlapped with the first time periods. An interval time period is present between each adjacent two of the first and second time periods. | 2022-07-14 |
20220224263 | CONTACTLESS POWER SUPPLY AND MOTOR CONTROL SYSTEM - A contactless power supply and motor control system includes a pulse width modulator, a rotary transformer, a demodulator circuit, a motor driver, and a motor. The pulse width modulator supplies a first pulse width modulated (PWM) signal that has a duty cycle and a first amplitude. The rotary transformer receives the PWM signal. The secondary winding is rotatable relative to the primary winding and supplies a second PWM signal having the duty cycle and a second amplitude. The demodulator circuit is rotatable with the secondary winding and supplies a demodulated direct current (DC) voltage having a DC voltage amplitude. The motor driver is rotatable with the secondary winding and the demodulator circuit and controllably supplies motor current. The motor receives the motor current and rotates at a rotational speed. | 2022-07-14 |
20220224264 | SYSTEM AND METHODS TO ADDRESS DRIVE TRAIN DAMPER OSCILLATIONS IN A GRID FORMING POWER GENERATING ASSET - The system and method described herein provide grid-forming control of a power generating asset having a double-fed generator connected to a power grid. Accordingly, a stator-frequency error is determined for the generator. The components of the stator frequency error are identified as a torsional component corresponding to a drivetrain torsional vibration frequency and a stator component. Based on the stator component, a power output requirement for the generator is determined. This power output requirement is combined with the damping power command to develop a consolidated power requirement for the generator. Based on the consolidated power requirement, at least one control command for the generator is determined and an operating state of the generator is altered. | 2022-07-14 |
20220224265 | METHOD FOR HEATING A GENERATOR OF A WIND POWER INSTALLATION - Provided is a method for heating a generator of a wind power installation during or before starting the installation. The generator is a permanent magnet synchronous generator configured to generate a stator current comprising at least one three-phase current. The installation is configured as a gearless installation and is connected to an electrical supply network for feeding electrical power into the network. The installation comprises a converter, connected to the generator, to control the generator to feed electrical power into the network. The method comprises rotating the rotor with a low rotational speed below a first limit and operating the converter such that the generator generates the stator current and electrical power, and no electrical power is fed into the electrical supply network. At least one portion of the stator current substantially circulates through the generator and the converter to consume power in generator windings to heat the generator. | 2022-07-14 |
20220224266 | CONTROLLER FOR AC ROTARY ELECTRIC MACHINE AND ELECTRIC POWER STEERING APPARATUS - To provide a controller for AC rotary electric machine and an electric power steering apparatus which can superimposes a cancellation current for canceling the torque ripple component on the winding current in feedforward manner and cancel the torque ripple component. A controller for AC rotary electric machine calculates an oscillation voltage command value of q-axis which has the same frequency as the torque ripple component; calculates a reverse phase of the torque ripple component based on the current information and the magnetic pole position; calculates a correction phase corresponding to the phase delay of the actual current with respect to the oscillation voltage command value of q-axis; and sets a phase of the oscillation voltage command value of q-axis to a phase obtained by advancing the reverse phase of the torque ripple component by the correction phase. | 2022-07-14 |
20220224267 | ENERGY EFFICIENT INDUCTION MOTOR - The invention relates to an energy efficient induction motor ( | 2022-07-14 |
20220224268 | CONTROL DEVICE, MAGNETIC FLUX ESTIMATION DEVICE, AND MAGNETIC FLUX ESTIMATION METHOD - A control device which includes a power conversion circuit configured to supply driving power to an electric motor, a magnetic flux estimation circuit configured to estimate a primary magnetic flux of the motor, and a voltage command generation circuit (control circuit) configured to control the conversion circuit based on an estimation result of the primary magnetic flux, in which the estimation circuit performs, when an operating speed of the motor is less than a predetermined level, a first estimation of estimating the primary magnetic flux based on an output current to the motor and an inductance thereof, and performs, when the speed exceeds a predetermined level, a second estimation of estimating the primary magnetic flux by estimating a magnetic flux differential value based on an output voltage of the conversion circuit and integrating the value using, as an initial value, an estimation result by the first estimation. | 2022-07-14 |
20220224269 | IMPEDANCE MEASUREMENT FOR A HAPTIC LOAD - In some implementations, a measurement circuit may drive, using a first transistor, a first node of a haptic load. The measurement circuit may trigger a first comparator when a voltage driving the haptic load satisfies a first condition. The first comparator may have a first node connected, in parallel, to a drain of a second transistor and may have a second node connected to the first node of the haptic load. Additionally, the second transistor may have a gate connected to a gate of the first transistor and may have the drain connected to a first reference current. | 2022-07-14 |
20220224270 | WINDING SWITCHING DEVICE OF ROTATING ELECTRIC MACHINE, ROTATING ELECTRIC MACHINE DRIVE SYSTEM, AND ELECTRIC DEVICE - A winding switching device switches parallel and series connections of windings of a rotating electric machine, and includes a plurality of electrodes that are connected to the windings and a power source, a movable portion in contact with the plurality of electrodes and includes a plurality of conductor portions, and an actuator that drives the movable portion. According to a contact state between the plurality of electrodes and the plurality of conductor portions, the windings are connected in parallel at a first position of the movable portion, and are connected in series at a second position of the movable portion. The electrodes include a first electrode connected to a first phase winding of the rotating electric machine in the plurality of windings, and a second electrode connected to a second phase winding. The first electrode and the second electrode are adjacent to each other, and form a neutral point. | 2022-07-14 |
20220224271 | ENERGY CONVERSION APPARATUS, MOTOR, POWER SYSTEM, AND VEHICLE - This application provides an energy conversion apparatus, a motor, a power system, and a vehicle. The energy conversion apparatus may integrate a motor drive function by using a three-phase bridge arm converter and a motor winding, and integrate an alternating current charging function by using a two-phase two-bridge-arm converter and a transformer. In this way, the energy conversion apparatus can integrate the charging function and the motor drive function. When the energy conversion apparatus is installed on an electric vehicle, a vehicle integration level can be increased, a structure layout of the electric vehicle can be simplified, and costs and a volume of the electric vehicle can be reduced. | 2022-07-14 |
20220224272 | DYNAMIC PULSE WIDTH MODULATION UPDATE - A control method includes sequentially updating a next cycle pulse width modulation command for each of an upper switch and lower switch of a phase leg of a power converter according to an order defined by timing of a rising edge of the next cycle pulse width command for one of the switches relative to a rising edge of a previous cycle pulse width command for the one of the switches. | 2022-07-14 |
20220224273 | MULTIPHASE INDUCTION MOTOR DRIVE FOR GEARLESS ELECTRIC VEHICLES - A Pole Phase Modulated (PPM) nine-phase induction motor drive may be used in gearless electric vehicle applications. A single stator winding multiphase induction motor may deliver variable speed-torques by varying the number of phases and poles with respect to a multiphase power converter. A multilevel inverter controlled with carrier phase shifted space vector pulse width modulator (PWM) may further improve the PPM based multiphase induction motor (MIM) drive with respect to efficiency, torque ripple, and direct current (DC) link utilization. To operate the PPM based MIM drive smoothly in different pole phase combinations, indirect field oriented vector control may used. | 2022-07-14 |
20220224274 | APPARATUS AND METHOD FOR PROVIDING AT LEAST ONE DRIVE SIGNAL - Apparatus for providing at least one drive signal for an electrical load, comprising: an enabling device adapted to receive at least one input signal and, based on the at least one input signal, to output, for example at least temporarily, the at least one drive signal, wherein the apparatus further comprises an activating device adapted to selectively activate or deactivate the enabling device. | 2022-07-14 |
20220224275 | ROTARY ELECTRIC MACHINE CONTROL DEVICE - A current detection unit includes current detection elements provided to phases on a high potential side of an upper arm element or on a low potential side of a lower arm element. A detection target element is the upper arm element or the lower arm element to which the current detection elements are provided. A target duty is a duty ratio of the detection target element. The control unit includes a current acquisition unit, an energization control unit, and an abnormality determination unit. The current acquisition unit acquires a current detection value from the current detection unit. The abnormality determination unit performs an abnormality determination based on the current detection value. The abnormality determination unit varies a determination threshold, which is used for the abnormality determination based on the current detection value, according to the target duty. | 2022-07-14 |
20220224276 | MOTOR DRIVING DEVICE AND AIR CONDITIONER INCLUDING THE SAME - A motor driving device and an air conditioner having the same of the present disclosure limits the switching of a winding switching device when there is a possibility that the winding switching device is deteriorated, in order to increase the life of winding switching device of a motor and prevent malfunction. | 2022-07-14 |
20220224277 | DEPLOYABLE HYBRID SOLAR POWER CHARGER - Various embodiments for a deployable hybrid solar power charger are described. A deployable hybrid solar power charger may include a charging base comprising a first rechargeable power supply and at least one solar panel for recharging the first rechargeable power supply. The deployable hybrid solar power charger may further include a charging device detachably attached to the charging base. The charging device comprises a second rechargeable power supply and at least one connector for charging an electronic device, such as a mobile electronic device. | 2022-07-14 |
20220224278 | SOLAR POWER SYSTEM FOR VEHICLES - Systems and methods directed to a solar electric system for use in freight systems. In some embodiments, a solar power system can be configured to provide power to a refrigerated truck trailer. For example, a solar power system can be composed of a solar panel package that can include solar cell layer(s), conductive material(s), and support portion(s). | 2022-07-14 |
20220224279 | FLOATING CARRIER DEVICE - A floating carrier device is configured to support at least one solar element floating on a water body, in particular an inland water body, with at least one floating body and with a carrier structure which is coupled with the floating body and is configured to transfer a support force of the at least one solar element to the at least one floating body. | 2022-07-14 |
20220224280 | Rail and Splice Foot Mounting System for Photovoltaic Panels - A PV array rail mounting system for use on support structures. In an aspect, the PV array rail mounting system includes rails and splice foot connectors. In an aspect, the splice foot connectors can support one or two rails, eliminating the need of a splice. | 2022-07-14 |
20220224281 | SYSTEMS FOR DAMPING A SOLAR PHOTOVOLTAIC ARRAY TRACKER - A solar tracker system includes a torque tube, a solar panel assembly attached to the torque tube, a housing defining a chamber and a fluid passageway extending from the chamber, and an active lock connected to a seal configured to prevent a flow path of fluid while in a sealed state and allow the flow path of fluid in an unsealed state. The system further includes a controller in communication with the torque tube and the active lock. The controller is programmed to receive a command to place the solar panel assembly in a stowed position, instruct the torque tube to rotate the panel assembly to a stowed angle corresponding to the stowed position, monitor a current angle of the panel assembly, compare the current angle to the stowed angle, and instruct the seal to transition to the sealed state when the current angle is equal to the stowed angle. | 2022-07-14 |
20220224282 | SYSTEMS FOR DAMPING A SOLAR PHOTOVOLTAIC ARRAY TRACKER - Solar tracker systems include a torque tube, a column supporting the torque tube, a solar panel attached to the torque tube, and a damper assembly. The damper assembly includes an outer shell surrounding an inner shell. A piston is at least partially positioned within the inner shell and moveable relative thereto. An active lock of the damper assembly includes a housing positioned within the outer shell. The housing defines a cavity and a housing channel extending from the cavity to an outer fluid channel. A shaft extends into the cavity and a valve assembly is attached to the shaft. The shaft is rotatable within the cavity between an unsealed position in which the housing channel is in fluid communication with the cavity, and a sealed position in which the valve assembly is rotationally aligned with the housing channel and obstructs fluid communication between the cavity and the housing channel. | 2022-07-14 |
20220224283 | STAGED STOWAGE OF SOLAR TRACKERS AND METHOD THEREOF - Methods and systems of managing dynamic response to wind in a solar tracker system are provided. The method includes determining a wind speed, comparing the wind speed to a predetermined threshold value to determine if the wind speed equals or exceeds the predetermined threshold, positioning a windward most solar tracker to a predetermined angle based on the comparing, and positioning a leeward most solar tracker to the predetermined angle based on the comparing. The solar trackers are positioned at the predetermined angle at a predetermined interval starting at the windward most solar tracker and the remaining solar trackers remain in a normal operating condition. | 2022-07-14 |
20220224284 | SOLAR MODULE HOLDING DEVICE, AND METHOD FOR PRODUCING A SOLAR MODULE HOLDING DEVICE - A solar module holding device ( | 2022-07-14 |
20220224285 | ENVIRONMENT-FRIENDLY PHOTOVOLTAIC MODULE MANUFACTURING PROCESS AND PHOTOVOLTAIC MODULE - An environment-friendly photovoltaic module manufacturing process and a photovoltaic module are provided. The environment-friendly photovoltaic module manufacturing process includes: preparing a solar cell assembly; fixing a junction box on the solar cell assembly in such a manner that a bus bar of the solar cell assembly is introduced into the junction box; fixing the bus bar to a metal slice in the junction box by welding; injecting a highly thermal conductive silica gel into the junction box; and curing the highly thermal conductive silica gel. The present disclosure can reduce the junction temperature of the junction box by means of combining the junction box and the highly thermal conductivity silica gel with a high thermal conductivity, so that the junction box can withstand higher temperature, and can be used in the photovoltaic module with large cell size and high current requirements. | 2022-07-14 |
20220224286 | TEMPERATURE BASED SELF-REGULATED COOLING ENHANCEMENT - A self-regulated solar power delivery system for data center. The ambient temperature outside of the data center is monitored. When the temperature exceeds a preset threshold, a controller activates switches to connect a PV system to a DC/DC converter and the DC/DC converter to a plurality of thermoelectric coolers (TECs). When the temperature drops below a second threshold, the controller disconnects the PV system. In this manner, when additional cooling is needed the most, i.e., during hot ambient temperature, the PV system also generates the most energy and can be used to energize TECs which enhance heat transportation from the processors. The PV system may also be used to activate a liquid cooling pump or other cooling devices to enhance heat removal from the servers. | 2022-07-14 |
20220224287 | DETERIORATION DIAGNOSIS DEVICE FOR SOLAR CELL STRING AND PHOTOVOLTAIC POWER GENERATION SYSTEM PROVIDED WITH THE SAME - A deterioration diagnosis device for a solar cell string and a photovoltaic power generation system includes an impedance measuring instrument to measure a frequency characteristic of a first impedance between solar power generation units connected in the solar cell string and to measure a frequency characteristic of a second impedance, an analysis unit to calculate a first increment from an initial value of a series resistance component, and to calculate a second increment from an initial value of a resistance component between the first end of the plurality of solar power generation units connected in series and the frames in the solar cell string based on the frequency characteristic of the second impedance, and a deterioration determining unit to determine a position of a solar cell module having an increased resistance in the solar cell string based on the first increment and the second increment calculated by the analysis unit. | 2022-07-14 |
20220224288 | LOCAL OSCILLATOR BUFFER - A local oscillator buffer circuit comprises a complementary common-source stage comprising a first p-channel transistor (MCSP) and a first n-channel transistor (MCSN), arranged such that their respective gate terminals are connected together at a first input node, and their respective drain terminals of each of is connected together at a buffer output node. A complementary source-follower stage comprises a second p-channel transistor (MSFP) and a second n-channel transistor (MSFN), arranged such that their respective gate terminals are connected together at a second input node, and their respective source terminals are connected together at the buffer output node. | 2022-07-14 |
20220224289 | SUPPLY MODULATOR PROVIDING MULTI-LEVEL SUPPLY VOLTAGE AND OPERATING METHOD THEREOF - A supply modulator includes a multi-level voltage generator configured to generate a plurality of power voltages having different voltage levels; a switch array including a plurality of switches respectively corresponding to the plurality of power voltages, and outputting one of the plurality of power voltages by activating connection of one of the plurality of switches; and a switch controller configured to control connection of each of the plurality of switches and activate connection of at least one third switch distinguished from a first switch and a second switch in response to receiving a level control signal switching the connection from the first switch to the second switch during a time period corresponding to a frequency to be attenuated between disconnecting the first switch and connecting the second switch. | 2022-07-14 |
20220224290 | METHOD, DEVICE, AND SYSTEM FOR SIGNAL DISTORTION PRE-CORRECTION, AND COMPOSITE SYSTEM - A device, method, and system for signal distortion pre-correction, and a composite system are disclosed. The device-includes: a signal distortion correction network module, a correction parameter trainer, a data collection module connected to an external power amplifier module, and a first conversion module. The data collection module is configured to perform time-division collection on output signals of channels of the power amplifier module and output analog feedback signals to the first conversion module. The first conversion module is configured to convert the analog feedback signals into digital feedback signals. The correction parameter trainer is configured to determine a correction parameter according to the digital feedback signals and a forward signal inputted. The signal distortion correction network module is configured to correct the forward signal based on the correction parameter and output a pre-corrected signal. | 2022-07-14 |
20220224291 | Device and Method for Downlink Gain Compensation As Well As Radio Unit Comprising the Device - Device and method are disclosed for downlink gain compensation at a radio unit. According to an embodiment, the device comprises a pre-distortion circuit, a digital gain adjuster, a gain determiner and a first gain controller. The pre-distortion circuit is configured to generate and apply a pre-distortion to an input signal. The digital gain adjuster is configured to apply an adjustable gain to an output signal from the pre-distortion circuit. The gain determiner is configured to determine a gain difference between a target downlink gain and current downlink gain. The first gain controller is configured to control the digital gain adjuster based on the gain difference. A radio unit comprising the device is also disclosed. | 2022-07-14 |
20220224292 | APPARATUS AND METHOD FOR POWER AMPLIFIER SURGE PROTECTION - Components of a power amplifier controller may support lower voltages than the power amplifier itself. As a result, a surge protection circuit that prevents a power amplifier from being damaged due to a power surge may not effectively protect the power amplifier controller. Embodiments disclosed herein present an overvoltage protection circuit that prevents a charge-pump from providing a voltage to a power amplifier controller during a detected surge event. By separately detecting and preventing a voltage from being provided to the power amplifier controller during a surge event, the power amplifier controller can be protected regardless of whether the surge event results in a voltage that may damage the power amplifier. Further, embodiments of the overvoltage protection circuit can prevent a surge voltage from being provided to a power amplifier operating in 2G mode. | 2022-07-14 |
20220224293 | CLASS-D AMPLIFIER, A METHOD OF CONTROLLING A GAIN OF AN INPUT AUDIO SIGNAL IN A CLASS-D AMPLIFIER - A class-D amplifier includes: a gain control unit that amplifies an input audio signal in accordance with a compensation gain to generate an input signal Vin; and a pulse width modulator that generates a first pulse Vp whose pulse width changes according to the input signal Vin within a first input range A | 2022-07-14 |
20220224294 | EQUALIZER CIRCUIT AND RELATED POWER MANAGEMENT CIRCUIT - An equalizer circuit and related power management circuit are provided. The power management circuit includes a voltage amplifier circuit configured to generate an envelope tracking (ET) voltage based on a differential target voltage and provide the ET voltage to a power amplifier circuit(s) via a signal path for amplifying a radio frequency signal(s). An equalizer circuit is provided in the power management circuit to equalize the differential target voltage prior to generating the ET voltage. Specifically, the equalizer circuit is configured to provide a transfer function including a second-order complex-zero term and a real-zero term for offsetting a transfer function of an inherent trace inductance of the signal path and an inherent impedance of the voltage amplifier circuit. By employing the second-order transfer function with the real-zero term, it is possible to reduce distortion in the ET voltage, especially when the RF signal(s) is modulated in a wide modulation bandwidth. | 2022-07-14 |
20220224295 | METHODS AND APPARATUS FOR POWER AMPLIFIER TRANSFORMERS - An example apparatus includes a first transformer winding having a first proximal end and a first distal end and a second transformer winding having a second proximal end and a second distal end, the first proximal end having a first distance from the second proximal end and the first distal end having a second distance from the second distal end, the first distance less than the second distance. | 2022-07-14 |
20220224296 | Highly Efficient Dual-Drive Power Amplifier for High Reliability Applications - A dual-drive power amplifier (PA) where the PA core includes a differential pair of transistors M | 2022-07-14 |
20220224297 | CIRCUIT AND METHOD TO ENHANCE EFFICIENCY OF SEMICONDUCTOR DEVICE - A circuit includes an operational amplifier, a plurality of input capacitors, a plurality of output capacitors, a plurality of sampling switches, a plurality of holding switches, a plurality of combined switches. The input capacitors include a first input capacitor and a second input capacitor. The output capacitors include a first output capacitor and a second output capacitor. The sampling switches include a first sampling switch, a second sampling switch, a third sampling switch and a fourth sampling switch. The holding switches include a first holding switch and a second holding switch. The combined switches include a first combined switch and a second combined switch. | 2022-07-14 |
20220224298 | Transimpedance Amplifier - A reset signal is generated by a TIA circuit alone. In an embodiment, a transimpedance amplifier configured to convert a current signal into a voltage signal includes a transimpedance stage including an amplification stage constituted of a transistor with a grounded emitter, and a comparator configured to compare a collector voltage of the transistor with a reference voltage and output a reset signal. | 2022-07-14 |
20220224299 | Controlling Analogue Gain of an Audio Signal Using Digital Gain Estimation and Gain Adaption - A gain control system for controlling gain applied to an audio signal includes a power estimator configured to estimate the power of a digital signal derived from the audio signal, a digital gain estimator configured to determine, in dependence on the estimated power, a digital gain which would modify the power of the digital signal so as to reach a target power level, and a gain controller configured to adjust an analogue gain applied to the audio signal in dependence on the determined digital gain. | 2022-07-14 |
20220224300 | AUDIO DEVICE WITH DYNAMICALLY RESPONSIVE VOLUME - Described herein is an audio device with a microphone which may adapt the audio output volume of a speaker by either increasing or decreasing output volume based on an audio input volume from a user and a distance from the user to the audio device. The audio device may also adapt its output volume to lower the audio output based on detecting one or more interruptions including occupancy and acoustic sounds. | 2022-07-14 |
20220224301 | METHOD AND APPARATUS FOR COMMON-MODE VOLTAGE CANCELLATION - A common-mode voltage cancellation (CMVC) circuit, is disclosed. The circuit includes a set of input lines arranged to receive a respective phase voltage, and a set of output lines arranged to provide a respective output phase voltage. The circuit further includes a set of coupled inductors, each having a respective primary winding and secondary winding coupled in signal communication at a respective upstream end to a respective input line to receive a respective phase voltage therefrom, each respective phase voltage having a common-mode voltage component. Each primary winding being coupled at a respective downstream end to ground, and each secondary winding being coupled in series between the respective input line and a respective output line. The circuit includes a set of capacitors, each capacitor being electrically coupled to a respective input line and in series with a respective primary winding of the set of coupled inductors. | 2022-07-14 |
20220224302 | METHOD AND DEVICE FOR HIGH BANDWIDTH RECEIVER FOR HIGH BAUD-RATE COMMUNICATIONS - An analog front-end (AFE) device and method for a high baud-rate receiver. The device can include an input matching network coupled to a first buffer device, which is coupled to a sampler array. The input matching network can include a first T-coil configured to receive a first input and a second T-coil configured to receive a second input. The first buffer device can include one or more buffers each having a bias circuit coupled to a first class-AB source follower and a second class-AB source follower. The sampling array can include a plurality of sampler devices configured to receive a multi-phase clocking signal. Additional optimization techniques can be used, such as having a multi-tiered sampler array and having the first buffer device configured with separate buffers for odd and even sampling phases. Benefits of this AFE configuration can include increased bandwidth, sampling rate, and power efficiency. | 2022-07-14 |
20220224303 | ADJUSTABLE REJECTION CIRCUIT WITH TUNABLE IMPEDANCE - An adjustable rejection circuit with tunable impedance circuit is disclosed. In particular, a circuit is provided with an impedance tuner configured to match impedances for an antenna. The impedance tuner may include an LC circuit (inductor-capacitor circuit) with one or more elements of the LC circuit being variable. An adjustable rejection circuit may be placed in parallel with the impedance tuner. The adjustable rejection circuit may include a variable negative capacitance element that provides strong attenuation in frequencies of interest. | 2022-07-14 |