| 摘要 |
<p>An interconnection inverter device for interconnecting with an alternating-current power system, in which anomaly in an electrolytic capacitor is detected to safely stop the device. The interconnection inverter device (1), which includes an inverter (21) for converting direct-current power supplied from a solar cell (11) to alternating-current power, and which interconnects an output of the inverter to the alternating-current power system, further includes a pair of capacitors (15a, 15b) connected in series to be inserted between a pair of direct-current buses (6, 7) each connecting a direct-current power supply and the inverter; an opening/closing unit (12) inserted to either one of a positive-electrode-side bus (6) and a negative-electrode-side bus (7) that form the pair of direct-current buses; voltage monitor units (16a, 16b) that monitor terminal voltages of the pair of capacitors respectively; and a controller (22: CPU) that controls opening or closing of the opening/closing unit based on monitor voltages detected by the voltage monitor units.</p> |
