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Patent # Description
US-9,543,887 Heat pump device, heat pump system, and method for controlling three-phase inverter
A selection unit switches between a phase .theta.p and a phase .theta.n different from the phase .theta.p substantially by 180 degrees, and outputs one of them...
US-9,543,886 Short circuit detection circuit and short circuit detection method for multi-phase rectifier at frequency domain
A short circuit detection circuit and a short circuit detection method for a multi-phase rectifier are provided, which are used for detecting conditions of a...
US-9,543,885 Rotary electric machine driving device
A rotary electric machine driving device that drives and controls an alternating-current rotary electric machine, the rotary electric machine driving device...
US-9,543,884 Motor control device of air conditioner using distributed power supply
A motor control device of an air conditioner may include: a DC/DC converter that level-changes a DC power supply supplied from the outside to output the...
US-9,543,883 Low-inductance, high-efficiency induction machine and method of making same
An electric drive system includes an induction machine and a power converter electrically coupled to the induction machine to drive the induction machine. The...
US-9,543,882 AC motor drive system
When regenerative power from an AC motor via an inverter exceeds a predetermined power threshold, a charging/discharging control unit, which outputs a control...
US-9,543,881 Rotary electric machine driving device
A rotary electric machine driving device that drives and controls an alternating-current rotary electric machine, the rotary electric machine driving device...
US-9,543,880 Rotary machine control apparatus
A rotary machine control apparatus controlling a drive of a rotary machine that has multiple winding groups is provided. The rotary machine control apparatus...
US-9,543,879 System and method for controlling muliphase electric motors
Controlling a multiphase electric motor by controlling the transmission of power to a first set of phases of a multiphase electric motor in accordance with a...
US-9,543,878 Drive unit and transport machine
A drive unit includes: an inverter; an electric motor that has a first winding connected to an output part of the inverter and a second winding connected to the...
US-9,543,877 Control apparatus for a switched reluctance motor
An apparatus for controlling a switched reluctance motor with use of a power conversion circuit. In the apparatus, a command voltage setter sets a command...
US-9,543,876 Three phase flux switching generator in a three stage wound field synchronous machine
A brushless, three phase wound field synchronous machine (WFSM) provides an electromechanical power transfer system wherein it may serve as both a starter and a...
US-9,543,875 Motor control device, and method and device for estimating magnetic flux of electric motor
A motor control device is provided, which includes a power converter for applying output voltage according to a voltage command to an electric motor, a magnetic...
US-9,543,874 Dual alternator system
A dual alternator system includes a main alternator controlled by an electronic voltage regulator, a secondary alternator system having a secondary alternator...
US-9,543,873 Techniques for controlling engine speed based on alternator duty cycle to increase vehicle efficiency
Techniques for controlling engine speed based on alternator duty cycle to increase overall vehicle efficiency involve increasing engine speed only after the...
US-9,543,872 Position sensorless control method for switched reluctance generator
A control method for a switched reluctance generator employing dual switched-mode power converters does not require a position sensor. In the excitation stage,...
US-9,543,871 Motor-driven appliance
A motor-driven appliance of one aspect of the present disclosure includes a motor and a controller. The controller includes a physical quantity detector, a...
US-9,543,870 Battery pack fuse monitoring and current limiting system
A battery pack monitoring system is provided that continually monitors the current at the fuse and, when the system determines that the fuse is close to its...
US-9,543,869 Motor control apparatus, image forming apparatus having the same, and motor control method
Provided herein are a motor control apparatus, an image forming apparatus, an image forming apparatus including the same, and a motor control method, by which...
US-9,543,868 Apparatus for controlling rotary electric machine
In an apparatus, a first control unit performs current-feedback control, and a second control unit performs torque-feedback control. The torque-feedback control...
US-9,543,867 Brushless direct current motor and driving apparatus thereof
The present invention relates to driving apparatus for a brushless direct current motor, comprising: at least three half-bridge circuits, each having two...
US-9,543,866 Motor drive controller and method for detecting rotation state
A motor drive controller is for controlling a motor having multiple phases and includes: a comparison reference voltage generator that generates a predetermined...
US-9,543,865 Device for driving three-phase brushless motor
The present invention allows a driving device, which drives a three-phase brushless motor in a sensorless manner, to detect an initial position of the brushless...
US-9,543,864 Motor driving circuit with power reversal protection and fan device
A motor driving circuit with power reversal protection and a fan device are disclosed. The motor driving circuit has a supply end and a ground end. A reversal...
US-9,543,863 Method to eliminate current surge during spindle spin up
Systems and methods to eliminate current surge during spindle spin up, include, in at least one aspect, a method including: using a duty cycle with a spindle...
US-9,543,862 Electric motor control device and electric motor control method
A current command generator 117 generates a current command that indicates a value of current supplied from an inverter circuit to electric motors connected in...
US-9,543,861 Piezoelectric generator
The present disclosure provides an ionic ring comprising a number of piezoelectric elements, a piezoelectric device including the ionic ring, and a...
US-9,543,860 Triboelectric nanogenerator
A generator includes a first cylindrical member and a second cylindrical member. The first cylindrical member includes a first dielectric layer including a...
US-9,543,859 System and method for active/reactive power compensation
Systems, methods, and devices for use with active/reactive power control in power conditioning systems. To provide quick active/reactive power control by way of...
US-9,543,858 Semiconductor device and inverter using same
A semiconductor device includes a gate pad, a first source pad and a second source pad insulated from each other, a drain pad, a main region, and a sense region...
US-9,543,857 Load driving device with failure detection
A motor driving device includes a failure detector detecting the failure of switching elements and diodes of an inverter circuit. When the failure detection...
US-9,543,856 Power conversion apparatus having a negative terminal of a power supply connected to one of connection nodes of...
A power conversion apparatus has a structure in which the negative terminal of an insulated power supply is connected to one of connection nodes of a negative...
US-9,543,855 Voltage source converter (VSC) with neutral-point-clamped (NPC) topology and method for operating such voltage...
A Voltage Source Converter (VSC) (10) with Neutral-Point-Clamped (NPC) topology with one or more phases, comprises an intermediate DC circuit having at least a...
US-9,543,854 Solar photovoltaic three-phase micro-inverter system and a method for improving the conversion efficiency thereof
The invention provides a solar photovoltaic three-phase micro-inverter system comprising a plurality of three-phase micro-inverters. Every three of the...
US-9,543,853 Sparse and ultra-sparse partial resonant converters
The AC portion of the input of the ultra-sparse partial resonant power converter contains three pairs of forward-conducting-bidirectional-blocking switches...
US-9,543,852 Method and system for controlling a DC link voltage of a power converter connecting an electric generator of a...
A method is provided for controlling a DC link voltage of a power converter connecting an electric generator of a wind turbine with a power grid. The method...
US-9,543,851 Matrix converter
A matrix converter includes: a power converter configured to couple an AC power supply and a load together; and a controller configured to selectively execute:...
US-9,543,850 Electronic apparatus and power controlling method
An electronic apparatus and a method of controlling power thereto are disclosed. The electronic apparatus including: a signal receiver configured to receive an...
US-9,543,849 Power conversion apparatus, power conversion method, motor system, and three-phase motor
A power conversion method including: receiving, by a pair of input terminals, an input voltage in which is a single-phase AC voltage; designating a first target...
US-9,543,848 Activation circuit of a resonance converter
An activation circuit for activating a power bridge circuit of a resonance converter, including an inductive activation transformer that transfers a pulsed...
US-9,543,847 Switched mode power supply with improved light load efficiency
A control circuit operable to control the switching of switching elements in a switched mode power supply. The control circuit comprises a switching control...
US-9,543,846 Switching power source, method and control chip for controlling the same
A switching power source includes: a dimmer connected to an alternating current power supply and having a plurality of operating modes; a filtering/rectifying...
US-9,543,845 Generating a control signal based on leading edge dimming detection for maintaining input current of a power...
A power converter includes an energy transfer element, a power switch, a controller and a leading edge dimming detection circuit. The controller is coupled to...
US-9,543,844 System and method for a switched-mode power supply
In accordance with an embodiment, a method of operating a switched-mode power supply includes synchronously rectifying a current in a secondary side of the...
US-9,543,843 Power supply device
There is provided a power supply device having a primary side and a secondary side isolated from each other. The power supply device includes: a power supply...
US-9,543,842 Converter for transferring power between DC systems
The present invention relates to a converter for transferring power between a first DC system of DC voltage V.sub.1 and a second DC system of DC voltage...
US-9,543,841 Control device employed in a switched electrical power supply system
The invention relates to a control device intended to be employed in a switched electrical power supply system, said system being able in particular to be...
US-9,543,840 Method and apparatus for sensing multiple voltage values from a single terminal of a power converter controller
A controller includes a switching control coupled to switch a power switch of a power converter to regulate an output of the power converter. A sensor is...
US-9,543,839 Voltage stabilizing circuit
A voltage stabilizing circuit includes an input capacitor, a booster circuit having an input side coupled across the input capacitor, a first output capacitor...
US-9,543,838 Phase fault detection in switching power converters
A switching power converter includes a phase operable to deliver a phase current to a load through an inductor. The phase current has an expected sawtooth or...
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