公开(公告)号：US20150244287A1

公开(公告)日：2015-08-27

申请号：US14700084

申请日：2015-04-29

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Tetsumi NARITA ,  Masato HIGUCHI ,  Yasuhiko KAWANAMI ,  Hidenori HARA ,  Takamitsu KATSUKI

IPC: H02M7/537

CPC classification number: H02M7/537 ,  H02M3/158 ,  H02M7/53871 ,  H02M7/5395 ,  H02M2001/0054 ,  H02M2001/007 ,  Y02B70/1491

Abstract: A controller of a power conversion apparatus according to an embodiment causes a chopper and an inverter to generate an alternating-current (AC) voltage including first and second parts of an AC voltage waveform and causes the inverter to output the AC voltage. The chopper generates the first part having an absolute value higher than a voltage of a DC power supply, and the inverter generates the second part having an absolute value lower than the voltage of the DC power supply. The controller is configured to alternately turn on the first and second switching elements in a period during which the controller controls the chopper to generate the first part of the AC voltage waveform.

Abstract translation: 根据实施例的电力转换装置的控制器使得斩波器和逆变器产生包括交流电压波形的第一和第二部分的交流（AC）电压，并使逆变器输出交流电压。 斩波器产生具有比直流电源的电压高的绝对值的第一部分，并且逆变器产生具有比直流电源的电压低的绝对值的第二部分。 控制器被配置为在控制器控制斩波器以产生交流电压波形的第一部分的周期期间交替地接通第一和第二开关元件。