Power conditioner, control unit, and power supply system

Abstract

A power conditioner (10) comprises a first connection terminal (11), a bidirectional DC / DC converter (12), a first relay (13), a first voltage sensor (14), a bidirectional inverter (15), and a control unit (16). The bidirectional DC / DC converter (12) is connected to the first connection terminal (11). The first relay (13) opens and closes an electrical connection between the first connection terminal (11) and the bidirectional DC / DC converter (12). The first voltage sensor (14) detects a voltage between the first connection terminal (11) and the first relay (13). The control unit (16) causes the bidirectional inverter (15) to carry out AC / DC conversion in the connection sequence. The control unit (16) switches the first relay (13) to ON after adjusting the DC voltage output from the bidirectional DC / DC converter (12) to the first connection terminal side to a first voltage in the connection sequence.

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