公开(公告)号：US11804787B2

公开(公告)日：2023-10-31

申请号：US17273906

申请日：2018-09-28

Applicant: Mitsubishi Electric Corporation

Inventor： Keisuke Uemura ,  Satoru Ichiki ,  Takuya Shimomugi ,  Koichi Arisawa ,  Kenji Iwazaki

IPC: H02M7/219 ,  F24F11/88 ,  H02M1/00 ,  H02P27/08

CPC classification number: H02M7/219 ,  F24F11/88 ,  H02M1/0009 ,  H02M1/0054 ,  H02P27/08 ,  H02P2201/15

Abstract: A power converting apparatus includes: a reactor that includes a first terminal and a second terminal, the first terminal being connected to an alternating-current power supply; a bridge circuit that is connected to the second terminal of the reactor, includes at least one or more switching elements, and converts an alternating-current voltage output from the alternating-current power supply into a direct-current voltage; a power-supply current detecting unit that detects a current from the alternating-current power supply; and a control unit that controls ON and OFF of the switching elements depending on a current value detected by the power-supply current detecting unit, in which two or more current thresholds for controlling ON and OFF of the switching elements are included.

公开(公告)号：US20170163180A1

公开(公告)日：2017-06-08

申请号：US14238179

申请日：2012-06-28

Applicant: Shunxin ZHOU

Inventor： Shunxin ZHOU

IPC: H02P6/04 ,  H02P23/26 ,  H02P27/08

CPC classification number: H02P6/04 ,  H02P6/005 ,  H02P23/26 ,  H02P27/06 ,  H02P27/08 ,  H02P27/16 ,  H02P2201/15

Abstract: A control system to realize input power changing along with both loads and rotate speed by an inverter bridge dragging many sets of motors, is composed of a stator voltage regulating unit (1), a motor unit (2), a rotor speed control unit (3), an inverter bridge unit (4), a control drive unit (5) and a signal processing unit (6). By setting a power factor sensor, the phase voltage and phase current of the motor stator are acquired as a control signal to regulate the input power so as to make it change with loads. At the same time, by setting a voltage sensor and a current sensor, motor rotor phase voltage, rectifier output current, overvoltage protection current and chopper working current are acquired separately as a control signal to regulate the input power so as to make it change with the rotate speed, thus realizing input power changing along with both loads and rotate speed.

公开(公告)号：US20160294316A1

公开(公告)日：2016-10-06

申请号：US14877943

申请日：2015-10-08

Applicant: RHYMEBUS CORPORATION

Inventor： Ming-Shi HUANG ,  Chang-Ming WANG ,  Kuan-Cheng CHEN ,  Ming-Chang CHOU

IPC: H02P27/08

CPC classification number: H02P27/08 ,  H02M1/4216 ,  H02M3/1582 ,  H02P23/26 ,  H02P29/50 ,  H02P2201/07 ,  H02P2201/15 ,  Y02B70/126 ,  Y02P80/116

Abstract: AC motor driving system and driving method thereof are provided. The driving system and method are capable of increasing power factor, adjusting waveform of the DC ripple voltage for increasing driving efficiency. The driving system is basically constructed by connecting three circuits. The first circuit is a three-phase full wave rectifying circuit and is used to transfer commercial electricity to a first DC voltage. Then, the second circuit is used to transfer the first DC voltage to a second DC voltage that ripples voltage thereof having a semi-sinusoidal waveform. The third circuit is an AC driving circuit, and receives the second AC voltage for driving the AC motor. Thereby, the driving efficiency can be increased. The capacitance used in the present disclosure has low capacitance value, thus the power factor can be increased, and usage time of the AC motor driving apparatus can also be increased.

Abstract translation: 提供交流电动机驱动系统及其驱动方法。 驱动系统和方法能够提高功率因数，调整直流纹波电压的波形，提高驱动效率。 驱动系统基本上通过连接三个电路构成。 第一电路是三相全波整流电路，用于将商用电力转移到第一直流电压。 然后，第二电路用于将第一直流电压传送到具有半正弦波形的波纹电压的第二直流电压。 第三电路是AC驱动电路，并且接收用于驱动AC电动机的第二AC电压。 由此，能够提高驱动效率。 本公开中使用的电容器具有低电容值，因此可以提高功率因数，并且还可以增加AC电动机驱动装置的使用时间。

公开(公告)号：US20160211791A1

公开(公告)日：2016-07-21

申请号：US14997900

申请日：2016-01-18

Applicant: Emerson Climate Technologies, Inc.

Inventor： Charles E. GREEN ,  Joseph G. MARCINKIEWICZ

IPC: H02P27/08 ,  H02P23/14 ,  H02P23/30 ,  H02P23/26

CPC classification number: H02P27/08 ,  H02P23/14 ,  H02P23/26 ,  H02P23/30 ,  H02P27/04 ,  H02P27/085 ,  H02P2201/15 ,  H02P2205/05 ,  H02P2205/07

Abstract: A control circuit for a motor of a compressor includes an inverter control module configured to control power switching devices of an inverter to generate output voltages from a DC power supply. The output voltages are applied to windings of the motor. A current control module is configured to generate voltage signals based on a torque demand. The inverter control module controls the power switching devices according to the voltage signals. A selector is configured to output one of an open loop torque value and a closed loop torque value as the torque demand. An open loop torque module is configured to generate the open loop torque value. The open loop torque module is configured to apply an upper limit to the open loop torque value. The upper limit is based on a voltage of the DC power supply.

Abstract translation: 一种用于压缩机的电动机的控制电路，包括：逆变器控制模块，被配置为控制逆变器的功率开关装置，以产生来自直流电源的输出电压。 输出电压施加到电机的绕组。 电流控制模块被配置为基于转矩需求产生电压信号。 逆变器控制模块根据电压信号控制电源开关装置。 选择器被配置为输出开环扭矩值和闭环扭矩值中的一个作为扭矩需求。 开环扭矩模块被配置为产生开环扭矩值。 开环扭矩模块被配置为对开环扭矩值施加上限。 上限基于直流电源的电压。

公开(公告)号：US09312780B2

公开(公告)日：2016-04-12

申请号：US14374456

申请日：2012-10-18

Applicant: DAIKIN INDUSTRIES,LTD.

Inventor： Yasutaka Taguchi

IPC: H02M5/45 ,  H02M5/458 ,  H02M7/48 ,  H02M1/12 ,  H02P27/06 ,  H02M1/42 ,  H02M1/00

CPC classification number: H02M5/458 ,  H02M1/4225 ,  H02M7/48 ,  H02M2001/0048 ,  H02M2001/123 ,  H02P27/06 ,  H02P2201/15 ,  Y02B70/126 ,  Y02B70/1491

Abstract: A converter to which an alternating current is inputted from an AC power supply rectifies the alternating current to output it to a DC link. An inverter is connected through the DC link to the converter and converts a direct current into an alternating current to output it to a load. A leakage current detector outputs a detection current corresponding to a leakage current leaking from the load. A compensating current output end is connected to a location where the leakage current leaks, and outputs a compensating current compensating for the leakage current in response to the detection current. A switch sets whether to input the detection current to the compensating current output section or not.

Abstract translation: 从AC电源输入交流电的A转换器对交流电进行整流，将其输出到DC链路。 逆变器通过直流链路连接到转换器，并将直流电转换为交流电，将其输出到负载。 泄漏电流检测器输出与从负载泄漏的泄漏电流相对应的检测电流。 补偿电流输出端连接到泄漏电流泄漏的位置，并响应于检测电流输出补偿电流的补偿电流。 开关设置是否将检测电流输入到补偿电流输出部。

公开(公告)号：US20150009725A1

公开(公告)日：2015-01-08

申请号：US14374456

申请日：2012-10-18

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yasutaka Taguchi

IPC: H02M5/458

CPC classification number: H02M5/458 ,  H02M1/4225 ,  H02M7/48 ,  H02M2001/0048 ,  H02M2001/123 ,  H02P27/06 ,  H02P2201/15 ,  Y02B70/126 ,  Y02B70/1491

Abstract: A converter to which an alternating current is inputted from an AC power supply rectifies the alternating current to output it to a DC link. An inverter is connected through the DC link to the converter and converts a direct current into an alternating current to output it to a load. A leakage current detector outputs a detection current corresponding to a leakage current leaking from the load. A compensating current output end is connected to a location where the leakage current leaks, and outputs a compensating current compensating for the leakage current in response to the detection current. A switch sets whether to input the detection current to the compensating current output section or not.

Abstract translation: 从AC电源输入交流电的A转换器对交流电进行整流，将其输出到DC链路。 逆变器通过直流链路连接到转换器，并将直流电转换为交流电，将其输出到负载。 泄漏电流检测器输出与从负载泄漏的泄漏电流相对应的检测电流。 补偿电流输出端连接到泄漏电流泄漏的位置，并响应于检测电流输出补偿电流的补偿电流。 开关设置是否将检测电流输入到补偿电流输出部。

公开(公告)号：US20150009723A1

公开(公告)日：2015-01-08

申请号：US14372980

申请日：2012-10-18

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yasutaka Taguchi

IPC: H02M5/458

CPC classification number: H02M5/458 ,  H02M1/12 ,  H02M1/4225 ,  H02M7/48 ,  H02M7/537 ,  H02M2001/0048 ,  H02M2001/123 ,  H02P27/06 ,  H02P2201/15 ,  Y02B70/126 ,  Y02B70/1491

Abstract: A diode bridge has a pair of input ends to which an alternating current is inputted from an AC power supply, and a pair of output ends which output a direct current. A boost chopper circuit is connected to the pair of output ends, and sets up a DC voltage inputted thereto. The boost chopper circuit functions as a power factor correction circuit. A smoothing capacitor is connected to an output side of the boost chopper circuit, and smoothes the voltage across the smoothing capacitor. An inverter receives the voltage across the smoothing capacitor to apply AC power to a load. A leakage current reduction device outputs a compensating current which compensates for a leakage current leaking from the load. The leakage current reduction device outputs the compensating current, except near the zero crossing of an AC voltage inputted from the AC power supply.

Abstract translation: 二极管桥具有一对输入端，从AC电源输入交流电，输出一对直流电。 升压斩波电路连接到一对输出端，并且设置输入的直流电压。 升压斩波电路用作功率因数校正电路。 平滑电容器连接到升压斩波电路的输出侧，并使平滑电容器两端的电压平滑。 逆变器接收平滑电容器两端的电压，向负载施加交流电。 泄漏电流降低装置输出补偿从负载泄漏的漏电流的补偿电流。 泄漏电流降低装置输出补偿电流，除了从交流电源输入的交流电压的过零点附近。

公开(公告)号：US20130093186A1

公开(公告)日：2013-04-18

申请号：US13709755

申请日：2012-12-10

Applicant: Shinji ARINAGA ,  Takatoshi MATSUSHITA ,  Tsuyoshi WAKASA ,  Masaaki SHIBATA ,  Akira YASUGI

Inventor： Shinji ARINAGA ,  Takatoshi MATSUSHITA ,  Tsuyoshi WAKASA ,  Masaaki SHIBATA ,  Akira YASUGI

IPC: F03D7/00

CPC classification number: F03D7/00 ,  F03D7/028 ,  F03D7/048 ,  F05B2240/40 ,  H02J3/1885 ,  H02J3/386 ,  H02P23/26 ,  H02P2201/15 ,  Y02E10/723 ,  Y02E10/763 ,  Y02E40/32

Abstract: An object is to improve the accuracy of power factor adjustment. Power-factor command values corresponding to individual wind turbines are determined by correcting a predetermined power-factor command value for an interconnection node using power factor correction levels set for the individual wind turbines.

Abstract translation: 目的是提高功率因数调整的精度。 通过使用针对各个风力涡轮机设定的功率因数校正水平来校正互连节点的预定功率因子命令值来确定与各个风力涡轮机对应的功率因子指令值。

公开(公告)号：US08264182B2

公开(公告)日：2012-09-11

申请号：US12672688

申请日：2008-08-13

Applicant: Krishnan Ramu

Inventor： Krishnan Ramu

IPC: G05F1/70 ,  H02P25/08

CPC classification number: H02P25/092 ,  H02P2201/15 ,  Y02P80/112

Abstract: A power factor correction system includes a rectifier that rectifies the voltage of an alternating current (ac) power source to produce a voltage waveform that transitions, in a half sinusoid, from a minimum amplitude to a maximum amplitude and back to the minimum amplitude twice in the period of the ac power source. A phase winding of a motor conveys current induced by the voltage waveform, and a regulator regulates the flow of the current conveyed by the phase winding for storage as energy in a storage component.

Abstract translation: 功率因数校正系统包括整流器，其对交流（AC）电源的电压进行整流，以产生电压波形，该电压波形在半正弦曲线中从最小幅度转换到最大幅度，并返回到最小振幅两次 交流电源的周期。 电动机的相绕组传递由电压波形引起的电流，并且调节器调节由相绕组输送的电流的流量作为能量存储在存储部件中。

公开(公告)号：US20110031920A1

公开(公告)日：2011-02-10

申请号：US12852961

申请日：2010-08-09

Applicant: Michael I. Henderson ,  Joseph G. Marcinkiewicz ,  Charles E. Green

Inventor： Michael I. Henderson ,  Joseph G. Marcinkiewicz ,  Charles E. Green

IPC: H02P7/29

CPC classification number: H02P21/06 ,  H02P21/0089 ,  H02P2201/15

Abstract: A motor control system includes a control module, a switching module, and a filtering module. The control module determines output voltages for operating a motor based on a torque demand. The switching module generates switching signals for an inverter that drives the motor. The switching module generates the switching signals based on the output voltages. The switching module generates an out-of-volts (OOV) signal according to a comparison based on the output voltages, a maximum duty cycle, and a voltage of a direct current (DC) bus that provides power to the inverter. The filtering module generates an OOV amount by filtering the OOV signal. The control module selectively limits the torque demand based on the OOV amount.

Abstract translation: 电机控制系统包括控制模块，开关模块和过滤模块。 控制模块基于转矩需求确定用于操作电动机的输出电压。 开关模块为驱动电机的变频器产生开关信号。 开关模块根据输出电压产生开关信号。 开关模块根据输出电压，最大占空比和向逆变器供电的直流（DC）总线的电压进行比较，产生失伏（OOV）信号。 滤波模块通过对OOV信号进行滤波生成OOV量。 控制模块基于OOV量有选择地限制扭矩需求。