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Patent # Description
US-9,929,693 High-frequency semiconductor amplifier
According to one embodiment, a high-frequency semiconductor amplifier includes an input terminal, an input matching circuit, a high-frequency semiconductor...
US-9,929,692 Crystal unit, oscillator, and method for fabricating the crystal unit
A crystal unit includes: a crystal substrate; and a pair of excitation electrodes formed respectively on both surfaces of the crystal substrate, wherein at...
US-9,929,691 Pyramidal wall sections
A method of producing a wall section is described. The method includes vacuum forming a carbon fiber sheet to a pyramidal mold core to create a first layer...
US-9,929,690 Spectrally-engineered solar thermal photovoltaic devices
A solar thermal photovoltaic device, and method of forming same, includes a solar absorber and a spectrally selective emitter formed on either side of a...
US-9,929,689 Semiconductor device
A semiconductor device disclosed in the present specification has a structure that includes: a first terminal that is to be externally connected to a power...
US-9,929,688 Electric machine torque capability determination
A vehicle comprises an electric machine configured with at least one controller issuing torque commands with the use of a voltage bus. The controller may be...
US-9,929,687 Motor control device
A motor control device includes: a motor; an inverter; and a control device. The control device includes: a detection device detecting a rotational position and...
US-9,929,686 Controller for permanent magnet synchronous motor, image forming apparatus, and control method
A controller for a permanent magnet synchronous motor includes an estimating portion configured to determine an estimated value of a rotational speed of the...
US-9,929,685 Safety circuit and brush holder for preventing fault conditions in an alternator
A fault protection circuit for an alternator is provided for preventing faults such as a prolonged full-field condition in the alternator. The fault protection...
US-9,929,684 Motor control system and method of controlling a motor
In various embodiments, a method of controlling a motor and motor control system may be provided. The method may include applying exciting ...
US-9,929,683 Motor drive device and brushless motor
Provided is a motor drive device which performs switching, with respect to a synchronous motor including a stator around which a motor winding is wound and a...
US-9,929,682 Motor control device
A motor control device is configured to drive a first motor that rotates a first rotation body and a second motor that rotates a second rotation body. The motor...
US-9,929,681 Multi-functional ECM motors for HVAC systems
Systems and methods associated with an HVAC system and a multi-functional ECM motor for use in the HVAC system are disclosed. The motor controller of the ECM...
US-9,929,680 Conformable electroadhesive holding device
A gripping device is described, and includes a holder including a base and a conformable jamming element having an electroadhesive element on a surface thereof...
US-9,929,679 Electrostatic induction-type vibration power generation device and method of manufacturing the same
An electrostatic induction-type vibration power generation device and method for improving a power generation amount, and extracting an external electric field...
US-9,929,678 Electrostatic energy-harvesting device having 3-dimensional cone shape
An electrostatic energy-harvesting device is provided. The electrostatic energy-harvesting device with a 3-dimensional cone shape includes a first structure...
US-9,929,677 Three-level active neutral point converter
The invention relates to a active-neutral point clamped converter having at least one half-bridge circuit connected into a DC voltage circuit. Each half-bridge...
US-9,929,676 Method for controlling three phase equivalent voltage of multilevel inverter
Provided is a method of controlling a three phase equivalent voltage in a multilevel inverter including sensing a state of each of power cells of the multilevel...
US-9,929,675 Inverter apparatus capable of controlling burst mode operation and control method thereof
An inverter apparatus is provided. The inverter apparatus includes a direct current to direct current (DC/DC) converter, a direct current to alternating current...
US-9,929,674 Power supply system for vehicle
A power supply system for a vehicle includes a power storage device, a direct current inlet, charging relays, a voltage sensor, and an electronic control unit....
US-9,929,673 Method for feeding energy from photovoltaic modules of a photovoltaic system and inverter designed for...
A method for feeding energy from photovoltaic modules (2) of a photovoltaic system (1) into a supply grid (5), or to a load, converts the DC voltage (U.sub.DC)...
US-9,929,672 Rectifier having reduced switching loss
A rectifier includes: first and second high side switches including source terminals connected to an alternating current input terminal and drain terminals...
US-9,929,671 Power converter in powered device of power-over-ethernet system and control method thereof
A power converter in a powered device (PD) of Power-over-Ethernet (PoE) system and a control method are provided. The power converter includes a transformer, a...
US-9,929,670 Power conversion device, motor drive control device equipped with power conversion device, compressor and...
A power conversion device is configured to have reactors and is configured to have chopper circuit units, connected in series, that chop the output of a...
US-9,929,669 Inverter
Disclosed herein is an inverter. The inverter includes a base provided with a heat dissipation part, a main board disposed on the base to output an input power...
US-9,929,668 Powder conditioner with reduced capacitor voltage ripples
A power conditioner includes a power converter module, a detector module and a control module. The power converter module performs power conversion upon a...
US-9,929,667 Circuit for direct energy extraction from a charged-particle beam
Provided herein is a fusion energy extraction circuit (FEEC) device having a grid-tied bidirectional converter and a resonant converter. The resonant converter...
US-9,929,666 Data processing device and method for high voltage direct current transmission system
A data processing device for a high voltage direct current (HVDC) transmission system is provided. The data processing device includes a plurality of measuring...
US-9,929,665 Remotely controllable modular power control device for power generation
A power adjusting circuit includes a sensor configured to measure a voltage and a current of the first AC output by an inverter, an AC/DC/AC converter...
US-9,929,664 Prevention of switching discontinuity in a hybrid switched mode amplifier
A method may include controlling switches of a switching full-bridge of a signal processing system to commutate polarity of a capacitor with respect to the...
US-9,929,663 Inductor protection during fast transient response in isolated voltage converters
Techniques are provided for controlling power switches that couple an input power source to a transformer within a voltage converter, in order to control the...
US-9,929,662 Alternating average power in a multi-cell power converter
A method includes receiving a periodic voltage by a power converter comprising a plurality of converter cells and, in a series of time frames of equal duration,...
US-9,929,661 Switching power supply apparatus
In a standby signal generation circuit, a first comparator compares a FB voltage fed back from a secondary side with a first reference voltage, and a second...
US-9,929,660 Electric power conversion device
An electric power conversion device includes a transformer composed of three or more windings magnetically coupled with each other, wherein power supply...
US-9,929,659 Driver circuit for synchronous rectifier switches in resonant converters, corresponding converter and method
A driver circuit for synchronous rectifier electronic switches, such as SR MOSFETs in resonant converters controls a pair of synchronous rectifier electronic...
US-9,929,658 Controlling a switched mode power supply with maximised power efficiency
A control circuit operable to generate a control signal to control the duty cycle of a switched mode power supply is provided. The control circuit comprises an...
US-9,929,657 Alternating valley switching for power converter
An exemplary embodiment of an alternating valley switching controller is provided. The alternating valley switching controller includes a valley detection...
US-9,929,656 Power converter using multiple controllers
A power converter controller includes a primary controller and a secondary controller. The primary controller is coupled to receive one or more request signals...
US-9,929,655 Systems and methods for flyback power converters with switching frequency and peak current adjustments
System and method for regulating a power converter. The system includes a comparator configured to receive a first signal and a second signal and generate a...
US-9,929,654 High voltage gain DC/DC power electronic converters
A DC/DC power converter provides high voltage gain using integrated boost and voltage multiplier (VM) stages. The boost cell operates according to a switching...
US-9,929,653 Multi-level buck converter with multiple control loops and flying capacitor regulation
A multi-level buck converter is provided with multiple control loops to regulate the output voltage across a wide duty cycle range while also regulating the...
US-9,929,652 GaN FET with integrated driver and slew rate control
A power circuit is disclosed. The power circuit includes a power capacitor and a power resistor connected to the power capacitor. The power circuit also...
US-9,929,651 Converter with hysteretic control
A hysteretic power converter constituted of: a switched mode power supply comprising an inductor, an electronically controlled switch and an output capacitor,...
US-9,929,650 Implementation of spread spectrum in PFM mode for DC-DC converters
Methods and apparatus for operating a DC-to-DC voltage converter that has a power stage that includes at least one switching transistor. The output voltage of...
US-9,929,649 Hybrid control architecture for load-adaptive power converter
A pulse width modulated power converter is presented with load-adaptive power transistor scaling scheme using analog-digital hybrid control. The coarse digital...
US-9,929,648 Hysteretic current mode controller for a bidirectional converter with lossless inductor current sensing
A system and circuit for achieving bidirectional hysteretic current mode control of a converter. The system comprises a summer that provides a constant...
US-9,929,647 Circuit and method for protecting circuit element, vehicle having the circuit, and method for controlling the...
A circuit and method for protecting circuit elements, vehicle having the circuit, and method for controlling the vehicle are provided. The circuit for...
US-9,929,646 Charge pump circuit and step-down regulator circuit
A charge pump circuit includes a capacitor, a first switch between the capacitor and a power supply terminal, a second switch between the capacitor and an...
US-9,929,645 Voltage charge pump with segmented boost capacitors
A voltage charge pump circuit with boost capacitor segments and boost delay chain structures are provided. The voltage charge pump circuit comprising a...
US-9,929,644 Internal voltage trimming device and semiconductor integrated circuit including the same
An internal voltage trimming device and a semiconductor integrated circuit including the same are provided. The internal voltage trimming device includes a...
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