Inverter

Inverter-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).

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NEW Power converting apparatus for vehicles
May 25, 2017 - N°20170144567

A power converting apparatus for vehicles according to an embodiment controls a plurality of ac motors for vehicle traveling set on a motor setting table. The power converting apparatus includes a plurality of inverter circuits and a plurality of controllers. The plurality of inverter circuits supply three-phase ac power to the ac motors. The plurality of controllers generate control signals ...
Dimmable instant-start ballast
Delta Electronics, Inc.
May 18, 2017 - N°20170142794

A dimmable instant-start ballast for a plurality of led lamps and/or a plurality of fluorescent lamps is provided, which includes an isolated dimming interface, a duty control device, a dimming switch, and an inverter circuit. The isolated dimming interface receives a dimming signal to generate a dimming voltage. The duty control device generates an operation signal according to the ...
Compressor driving device, compressor including the same, and refrigeration cycle apparatus including the compressor driving ...
Panasonic Intellectual Property Management Co., Ltd.
May 18, 2017 - N°20170141709

A compressor driving device includes: a controller (23) that pwm drives a compressor; an inverter circuit unit (4) that supplies power to an electric motor included in the compressor; a drive circuit (5) that drives the inverter circuit unit (4) according to a control signal; a voltage detector (9) that detects a voltage that is output to the electric motor; and a current detector (10) that ...
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Corner connector for photovoltaic module frame
Solarworld Americas Inc.
May 11, 2017 - N°20170133982

Corner connection members for a photovoltaic module frame include thru-passages for receiving insert components that perform and facilitate a variety of functions, such as attaching the photovoltaic module to a roof, providing a ground connection for the solar cells, to facilitate the mechanical and electrical connection of photovoltaic modules which are arranged side-by-side, to facilitate securing photovoltaic modules in a ...
Motor drive device
Hitachi Automotive Systems, Ltd.
May 11, 2017 - N°20170133958

The purpose of the present invention is to continue to drive a motor while suppressing drive torque ripple generated by the motor, when any of the phases is opened during the driving of the motor. A motor drive device controls the driving of a motor in which the armature windings of respective phases are independently provided. The motor drive device ...
Overcurrent protection system and method for inverter circuit
Huawei Technologies Co., Ltd.
May 11, 2017 - N°20170133925

A overcurrent protection system includes an inductor current detection circuit configured to detect an inductor current in the inverter circuit to obtain an inductor current detection value, a pulse-by-pulse current limit enable signal generation circuit connected to the inductor current detection circuit and to the pulse-by-pulse current limit enable signal generation circuit, and configured to perform turn-off control on a ...
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Power conversion device and three-phase ac power supply device
Sumitomo Electric Industries, Ltd.
May 11, 2017 - N°20170133921

This power conversion device includes: conversion devices for supplying ac powers to respective phases with respect to the neutral point of a three-phase ac system via reactors; and a control unit for controlling the conversion devices. Each conversion device includes: a step-up circuit for stepping up the dc input voltage value of dc power; and a single-phase inverter circuit. For ...
Single-stage photovoltaic grid-connected inverter and control method and application thereof
Sungrow Power Supply Co., Ltd.
May 11, 2017 - N°20170133857

A grid-connected single-stage photovoltaic inverter is provided, which includes a direct current (dc) to alternating current (ac) inverter circuit, a dc to dc voltage booster circuit and a bypass element. An output of the dc to ac inverter circuit is connected to an alternating current grid, the dc to dc voltage booster circuit is connected in series between a photovoltaic ...
Metal working power supply converter system and method
Illinois Tool Works Inc.
May 11, 2017 - N°20170129034

A power supply for welding, cutting and similar operations includes a dual two-switch forward converter. The converter has two inverter circuits coupled in parallel but controlled to provide output power in an interleaved fashion. To avoid “walking” of the circuits (which could result in different duty cycles and imbalance of the load sharing), control signals are ...
Multimode wireless power transmitters and related methods
Integrated Deivce Technology, Inc.
May 04, 2017 - N°20170126071

A wireless power transmitter comprises a bridge inverter configured to receive a dc power signal and generate an ac power signal according to an operating frequency, a resonant tank configured to receive the ac power signal and generate an electromagnetic field responsive thereto, and control logic configured to cause the resonant tank to reconfigure and adjust its resonant frequency for ...
Liquid discharge apparatus
Hitachi Koki Co., Ltd.
May 04, 2017 - N°20170122304

A high-pressure washing machine is provided, which can stop a brushless motor even if the function of a microcomputer declines. The high-pressure washing machine is provided as a high-pressure washing machine 10 having a pump 12 which sucks and discharges a washing solution and a brushless motor 14 supplied with current to drive the pump 12. The high-pressure washing machine 10 includes an inverter circuit 29 ...
Load control device for a light-emitting diode light source
Lutron Electronics Co., Ltd.
April 27, 2017 - N°20170118812

A load control device for controlling the amount of power delivered to an electrical load is able to operate in a normal mode and a burst mode. The load control device may comprise a control circuit that activates an inverter circuit during active state periods and deactivates the inverter circuit during inactive state periods. The control circuit may operate in ...
Complementary metal-oxide-semiconductor (cmos) inverter circuit device
Magnachip Semiconductor, Ltd.
April 27, 2017 - N°20170117894

There is provided a cmos inverter circuit device. The cmos inverter circuit device includes a delay circuit unit configured to generate different charge and discharge paths of each gate node of a pmos transistor and an nmos transistor respectively at the time that an input signal transitions between high and low levels. Therefore, the present examples minimize or erase generation ...
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Motor control device and electric power steering device including the same
Denso Corporation
April 27, 2017 - N°20170117840

A motor control device for a motor includes: an inverter circuit supplying power of a battery to the motor; an inverter input voltage detector detecting an inverter input voltage; and a controller including a drive controller for the motor and an abnormality determination unit for determining power feeding abnormality. The abnormality determination unit determines the power feeding abnormality when the ...
Power converter circuit and method thereof
Redisem Ltd.
April 27, 2017 - N°20170117806

A power converter circuit and an associated method of converting an ac power supply. The power converter circuit comprises: a supply rectifier circuit (2) for rectifying an ac supply power to generate a rectified supply power; an inverter circuit (3) for receiving the rectified supply power to generate an inverted supply power; a load rectifier circuit (4) for rectifying the inverted supply power ...
Power conversion system
Denso Corporation
April 20, 2017 - N°20170110986

In a power conversion system, when a frequency of a ripple current, flowing into a power supply line of a direct current power source, is equal to a resonance frequency of an lc filter, a resonance is efficiently restricted. In the lc filter connected between the direct current power source and an inverter circuit, an n channel mosfet is arranged ...
Power conversion apparatus
Hitachi, Ltd.
April 13, 2017 - N°20170105321

Technology leading to a size reduction in a power conversion apparatus comprising a cooling function and technology relating to enhancing productivity and enhancing reliability necessary for commercial production are provided. Series circuits comprising an upper arm and lower arm of an inverter circuit are built in a single semiconductor module 500. The semiconductor module has cooling metal on two sides. An ...
Power conversion device and three-phase ac power supply device
Sumitomo Electric Industries, Ltd.
April 13, 2017 - N°20170104422

A power conversion device includes: a conversion device for each phase which converts dc voltage inputted from a dc power supply, to voltage having an ac waveform to be outputted to each phase with respect to a neutral point of three-phase ac; and a control unit which controls these conversion devices. Each conversion device includes: a first conversion unit which ...
Wireless power transmitter, control circuit and control method thereof, and charger
Rohm Co., Ltd.
April 13, 2017 - N°20170104370

A wireless power transmitter for transmitting a power signal to a wireless power receiver is disclosed. The transmitter includes a transmission antenna, an inverter circuit including a plurality of switches; and a control circuit configured to demodulate a control signal received by the transmission antenna from the transmitter and control the inverter circuit based on power control data included in ...
Charge pump circuit, integrated circuit, electronic device and method therefor
Mediatek Singapore Pte. Ltd.
April 06, 2017 - N°20170098995

A charge pump circuit for generating a negative voltage has a switched capacitor voltage inverter circuit arranged to receive at least one clock signal and generate a negative voltage therefrom; a regulation control loop providing a feedback path from the output of the switched capacitor voltage inverter circuit to a supply input of the switched capacitor voltage inverter circuit, wherein ...
Wireless power transmission system
Panasonic Intellectual Property Management Co., Ltd.
April 06, 2017 - N°20170098991

A wireless power transmission system includes a power transmitting device, power receiving device, and load. The power transmitting device includes an inverter circuit, power transmitting antenna, power transmission control circuit, and transmitting-side receiver. The power receiving device includes a power receiving antenna, rectifying circuit, and receiving-side transmitter. The power transmission control circuit causes the inverter circuit to output preliminary ac ...