Kabushiki Kaisha Yaskawa Denki

Takamitsu Katsuki

Hidenori Hara

Masato Higuchi

Yasuhiko Kawanami

Tetsumi Narita

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.

Growing community of inventors

Fukuoka, Japan

Takamitsu Katsuki