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1.发明授权Power conversion circuit with leakage current compensation except near the AC voltage zero crossing 有权除了交流电压过零点附近，漏电流补偿功率转换电路公开(公告)号：US09190926B2
公开(公告)日：2015-11-17
申请号：US14372980
申请日：2012-10-18
发明人： Yasutaka Taguchi
CPC分类号： H02M5/458 , H02M1/12 , H02M1/4225 , H02M7/48 , H02M7/537 , H02M2001/0048 , H02M2001/123 , H02P27/06 , H02P2201/15 , Y02B70/126 , Y02B70/1491
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US10439542B2
公开(公告)日：2019-10-08
申请号：US15509291
申请日：2015-09-30
IPC分类号： H02P27/08 , H02M7/5395 , H02M7/06 , H02M7/12 , H02M7/48 , H02M1/42 , H02M7/5387 , H02M1/00
摘要： An electric power conversion device includes: a converter circuit which includes a boost chopper; a capacitor which is connected between output terminals of the converter circuit; a boost chopper which boosts a terminal voltage of the capacitor; a multiphase inverter circuit; and a boost chopper controller. In a case where the operation of the boost chopper is continuously stopped, the capacitor has a capacitance allowing the terminal voltage of the capacitor to have a pulse frequency twice as high as that of the AC power source. The multiphase inverter circuit has an output power which is allowed to fluctuate in synchronization with a power source.
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公开(公告)号：US10003277B2
公开(公告)日：2018-06-19
申请号：US15511289
申请日：2015-08-05
发明人： Yasutaka Taguchi , Junya Mitsui , Akira Moriguchi
CPC分类号： H02M7/1557 , F04B35/04 , F04B39/02 , F04B49/06 , F04B49/103 , F04B49/20 , F04B2203/0201 , F04B2203/0209 , F24F11/89 , F25B1/00 , F25B13/00 , F25B49/022 , F25B2600/021 , F25B2600/0253 , F25B2700/151 , H02M1/12 , H02M1/32 , H02M1/44 , H02M5/458 , H02M7/48 , H02M2001/123 , H02P6/06 , Y02B30/741 , Y02B40/32
摘要： A power converter including a compressor as a load includes a compensation current output (80) allowing compensation current (Ic), which compensates for leakage current (Ia), to flow. A controller (50) receives a detection signal from a rotational speed sensor (55) which senses the rotational speed of the compressor (CM). When the rotational speed has increased to a set rotational speed at which the leakage current (Ia) is lower than or equal to its limiting value (Lmax) (e.g., the limiting value specified under the Electrical Appliances and Materials Safety Act or by the IEC) in a state where the compensation current output (80) is off, the compensation current output (80) is switched from an on state to an off state. This may reduce the leakage current from the compressor with low power loss.
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公开(公告)号：US09312780B2
公开(公告)日：2016-04-12
申请号：US14374456
申请日：2012-10-18
发明人： Yasutaka Taguchi
CPC分类号： H02M5/458 , H02M1/4225 , H02M7/48 , H02M2001/0048 , H02M2001/123 , H02P27/06 , H02P2201/15 , Y02B70/126 , Y02B70/1491
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20150009725A1
公开(公告)日：2015-01-08
申请号：US14374456
申请日：2012-10-18
发明人： Yasutaka Taguchi
IPC分类号： H02M5/458
CPC分类号： H02M5/458 , H02M1/4225 , H02M7/48 , H02M2001/0048 , H02M2001/123 , H02P27/06 , H02P2201/15 , Y02B70/126 , Y02B70/1491
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20150009723A1
公开(公告)日：2015-01-08
申请号：US14372980
申请日：2012-10-18
发明人： Yasutaka Taguchi
IPC分类号： H02M5/458
CPC分类号： H02M5/458 , H02M1/12 , H02M1/4225 , H02M7/48 , H02M7/537 , H02M2001/0048 , H02M2001/123 , H02P27/06 , H02P2201/15 , Y02B70/126 , Y02B70/1491
摘要： 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.
摘要翻译： 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。
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