A power conversion device comprising: a conversion device for each phase that converts a DC voltage input from a DC power supply into a voltage of an AC waveform to be outputted to each phase with respect to the neutral point of a three-phase AC; and a control unit for controlling them; The device has a DC/DC converter including an isolation transformer and a capacitor, and a control unit controls the DC/DC converter, so that the input DC voltage is a voltage including a pulsating current waveform corresponding to the absolute value of the AC waveform to be output. A first conversion unit that converts to and is provided at a later stage than the first conversion unit, has a full-bridge inverter, and the control unit controls the full-bridge inverter, thereby inverting the polarity of the voltage including the pulsating wave waveform every one cycle, A second converter for converting the voltage is provided.
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