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    • 53. 发明申请
    • AC MOTOR DRIVING SYSTEM AND METHOD THEREOF
    • 交流电动机驱动系统及其方法
    • US20160294316A1
    • 2016-10-06
    • US14877943
    • 2015-10-08
    • RHYMEBUS CORPORATION
    • Ming-Shi HUANGChang-Ming WANGKuan-Cheng CHENMing-Chang CHOU
    • H02P27/08
    • H02P27/08H02M1/4216H02M3/1582H02P23/26H02P29/50H02P2201/07H02P2201/15Y02B70/126Y02P80/116
    • 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.
    • 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。
    • 57. 发明申请
    • POWER CONVERSION CIRCUIT
    • 电源转换电路
    • US20150009723A1
    • 2015-01-08
    • US14372980
    • 2012-10-18
    • DAIKIN INDUSTRIES, LTD.
    • Yasutaka Taguchi
    • H02M5/458
    • H02M5/458H02M1/12H02M1/4225H02M7/48H02M7/537H02M2001/0048H02M2001/123H02P27/06H02P2201/15Y02B70/126Y02B70/1491
    • 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.
    • 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。