| 摘要 |
<p>In a distributed power supply system (10), an AC bus line (6) is connected to an AC power system (1). A DC power supply unit (20) generates and outputs DC power. A first converter (30) converts the DC power output from the DC power supply unit (20) to an AC power and supplies the AC power to the AC bus line (6). A power storage unit (60) performs charging and discharging of DC power. A second converter (40) performs a bidirectional conversion for converting the DC power from the power storage unit (60) to an AC power and supplying the AC power to the AC bus line (6) or converting the AC power from the AC bus line (6) to a DC power and supplying the DC power to the power storage unit (60). A DC line (17) connects between the DC side terminal of the first converter (30) and the DC side terminal of the second converter (40). A current blocking unit (70) is provided on the DC line (17) and blocks current flowing from the DC side terminal of the second converter (40) to the DC side terminal of the first converter (30).</p> |
