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Inverter

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


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In-vehicle inverter driving device and in-vehicle fluid machine
Kabushiki Kaisha Toyota Jidoshokki
April 12, 2018 - N°20180102723

An in-vehicle inverter driving device is used to perform pwm control of an inverter circuit that drives an electric motor. The electric motor includes a rotor having a permanent magnet and a stator about which three-phase coils are wound. The in-vehicle inverter driving device includes a bootstrap circuit, which uses a capacitor to turn on upper arm switching elements of ...
Electric tool
Hitachi Koki Co., Ltd.
April 12, 2018 - N°20180099372

Provided is an electric tool in which the risk of short-circuiting between conductive members of multiple installed switching elements has been reduced by providing partitioning plates between the switching elements. An electric tool, which has a motor, an inverter circuit with multiple switching elements for performing switching operations and controlling the driving of the motor, a control unit for controlling ...
Energy-efficient dual-rail keeperless domino datapath circuits
Intel Corporation
April 05, 2018 - N°20180097615

Described is an apparatus comprising precharge paths including first clocked transistors having gates coupled to a clock signal path, first terminals coupled to a first power rail, and second terminals coupled to one or more first junction nodes. The precharge paths lack a keeper circuitry, have a configurable keeper circuitry, and/or have cross-coupled keeper circuitry to eliminate/reduce keeper ...
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Integrated electric power steering apparatus and manufacturing method therefor
Mitsubishi Electric Corporation
April 05, 2018 - N°20180093698

A control unit for controlling an electric motor has on a w iring board at least an inverter circuit including two or more switching devices for supplying an electric current to the electric motor and a cpu for outputting command signals to the inverter circuit; the control unit, as an inverter module in which the wiring board is mounted in ...
Brushless motor apparatus setting mask period on the basis of comparison between voltage of specific ...
Brother Kogyo Kabushiki Kaisha
March 29, 2018 - N°20180091073

In a brushless motor apparatus, a brushless motor has a rotor and y-connected coils, and a controller has an inverter circuit selectively driving the coils. The controller detects an induced voltage generated in a specific coil which is not driven by the inverter circuit while the rotor rotates. The controller acquires a positional signal of the rotor on a basis ...
Load control device for a light-emitting diode light source having different operating modes
Lutron Electronics Co., Inc.
March 22, 2018 - N°20180084616

A load control device for regulating an average magnitude of a load current conducted through an electrical load may operate in different modes. The load control device may comprise a control circuit configured to activate an inverter circuit during an active state period and deactivate the inverter circuit during an inactive state period. In one mode, the control circuit may ...
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Inverter Patent Applications
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Pseudorandom pwm variation based on motor operating point
Ford Global Technologies, Llc
March 15, 2018 - N°20180076744

An electric drive for a vehicle uses an inverter circuit configured to provide a multi-phase ac drive signal to an electric machine according to a pwm drive signal. A pwm controller monitors an operating point of the electric drive and is configured to identify an operating region of the electric drive from a plurality of predetermined regions in response to ...
Comparator and memory region detection circuitry and methods
Arm Limited
March 15, 2018 - N°20180074954

Comparator circuitry comprises carry-save-addition (csa) circuitry to generate a set of partial sum bits and a set of carry bits in respect of corresponding bit positions in a first input value, a second input value, a carry-in value associated with the first and second input values, and a third input value, the csa circuitry comprising inverter circuitry to provide a ...
Power tool
Hitachi Koki Co., Ltd.
March 15, 2018 - N°20180071843

A power tool includes: a brushless motor; a rectifier circuit; a smoothing circuit; an inverter; a controller; an operating part; and a switch. The switch is rendered on in accordance with an operation performed in the operating part by a user to allow power to be supplied to the inverter circuit by the rectifier circuit through the smoothing circuit and ...
Electronic circuit
Japan Science And Technology Agency
March 08, 2018 - N°20180069534

An electronic circuit includes: a bistable circuit connected between first and second power sources respectively supplied with first and second power-supply voltages and including first and second inverters connected in a loop being inverter circuits switching between first and second modes; a control circuit outputting first and second signals respectively setting the inverter circuits in the first and second modes ...
Failure detection device of power converter and vehicle
Honda Motor Co.,ltd.
March 08, 2018 - N°20180065486

A power converter which can prevent an erroneous detection even when a flow rate of a refrigerant is low and a vehicle having the power converter mounted therein are provided. A first inverter circuit including: an element group constituted by six transistors; six diode temperature sensors at least one of which is provided for each transistor to detect a temperature ...
Drive control unit for motor
Hitachi Automotive Systems, Ltd.
March 01, 2018 - N°20180062556

A drive control unit in which a drive control system for a motor is made redundant so that a motor having two coil sets is individually driven and controlled for each coil set includes an inverter substrate on which a first inverter circuit that drives each coil of a first coil set, and a second inverter circuit that drives each ...
Bidirectional non-contact power supply device and bidirectional non-contact power supply system
Mitsubishi Electric Corporation
March 01, 2018 - N°20180062430

A bidirectional non-contact power supply device with its electric power transmission efficiency being high is obtained by a simple configuration. In the bidirectional non-contact power supply device, a coil is included for performing electric power transmission to and reception from another coil through a magnetic field coupling therebetween, and the coil and a capacitor being connected in series are connected ...
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Inverter Patent Applications
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Semiconductor device
Semiconductor Energy Laboratory Co., Ltd.
February 22, 2018 - N°20180053794

Provided is a semiconductor device exemplified by an inverter circuit and a shift register circuit, which is characterized by a reduced number of transistors. The semiconductor device includes a first transistor, a second transistor, and a capacitor. One of a source and a drain of the first transistor is electrically connected to a first wiring, and the other thereof is ...
Power tool
Hitachi Koki Co., Ltd.
February 22, 2018 - N°20180050398

To provide a power tool configured to stably rotate an end tool. The provided power tool includes a brushless motor including a rotor configured to rotate; a rectifier circuit configured to rectify an ac voltage; a smoothing capacitor configured to smooth the ac voltage rectified by the rectifier circuit to a pulsating voltage; an inverter circuit configured to perform switching ...
Centralized control mechanism for multi-motor drive
Zhongshan Broad-ocean Motor Co., Ltd.
February 15, 2018 - N°20180048250

A centralized control mechanism for a multi-motor drive, the mechanism including: a plurality of independent motor drive modules; a power source module; an interface control microprocessor; a communication module; and a plurality of interface modules of motors. The power source module supplies power for each circuit, and each independent motor drive module drives one permanent magnet motor. Each motor drive ...
Inverter circuit and power conversion device
Omron Corporation
February 08, 2018 - N°20180041138

An inverter circuit provided in a power conversion device includes a full-bridge inverter, and a short circuit part. The short circuit part includes switching elements and clamp elements connected to the switching elements. The clamp elements suppress application of an excessive voltage such as a surge voltage to the switching elements.
Non-contact power supply apparatus, program, method for controlling non-contact power supply apparatus, and non-contact power ...
Panasonic Intellectual Property Management Co., Ltd.
February 01, 2018 - N°20180034322

A control circuit is configured to adjust a phase difference which is a delay of the phase of each of the second drive signals to the phase of each of the first drive signals to a set value within a prescribed range to adjust the magnitude of output power. The control circuit includes an estimator and a setter. The estimator ...
Pillar-shaped semiconductor memory device and method for producing the same
Unisantis Electronics Singapore Pte. Ltd.
February 01, 2018 - N°20180033792

An sram includes two si pillars on a substrate. In the si pillars, inverter circuits are formed. The inverter circuits include drive n-channel sgts each including first and second n+ layers functioning as a source and a drain, and load sgts each including first and second p+ layers functioning as a source and a drain. Selection sgts each including third ...
Electric driving apparatus
Mitsubishi Electric Corporation
January 25, 2018 - N°20180026492

In an electric driving apparatus, a sensor magnet is fixed to a first end portion of a rotary shaft of a motor. A sensor device includes a rotation sensor that detects a magnetic field generated by the sensor magnet. The rotation sensor opposes the sensor magnet in an axial direction of the rotary shaft. A control unit mounted on the ...
Semiconductor device, method for manufacturing semiconductor device, inverter circuit, driving device, vehicle, and elevator
Kabushiki Kaisha Toshiba
January 25, 2018 - N°20180025910

A semiconductor device according to an embodiment includes a sic layer having a first and a second plane; a first electrode having a first region in the sic layer, the inclination angle of a side surface of the first region being 60 to 85 degrees; a second electrode; a first gate electrode; a second gate electrode facing the first gate electrode; first ...
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