Conversion device

The invention relates to a conversion device. The conversion device includes: a DC bus provided between a DC power supply and an AC power supply; a first converter provided between the DC power supply and the DC bus to perform DC/DC conversion; a second converter provided between the DC bus and the AC power supply to perform DC/AC or AC/DC conversion; and a control unit configured to selectively cause the first converter and the second converter to operate within one cycle of the AC power supply, to alternately generate a part of an absolute value of an AC waveform, and a DC waveform, as voltage of the DC bus, wherein the control unit adds a compensation value in a positive direction, to a voltage target value for the DC bus, at a timing that should have corresponded to a discontinuity point where the AC waveform and the DC waveform are connected to each other. 本发明涉及转换装置。所述转换装置包括：直流母线，该直流母线被设置在直流电源和交流电源之间；第转换器，该第转换器被设置在直流电源和直流母线之间以执行直流/直流转换；第二转换器，该第二转换器被设置在直流母线和交流电源之间以执行直流/交流或交流/直流转换；和控制单元，该控制单元被配置为选择性地使第转换器和