| 摘要 |
A solar cell array used in a photovoltaic power generation apparatus for housing covers a relatively large outside area for installation, and a considerably large earth capacitance Ca exists between the solar cell array and the ground. Further, as an inverter for converting direct-current electric power generated by the solar cell array into alternating-current electric power, a transless-type inverter is used for reducing cost. Therefore, a slight leak current flows via the earth capacitance Ca, which may cause undesirable operation of an earth leakage circuit breaker inserted between the inverter and a commercial AC power system. In the photovoltaic power generation apparatus of the present invention, by designing it so that relationship between the earth capacitance CaÄ mu FÜ and leak current detection sensitivity ELÄmAÜ of the earth leakage circuit breaker has Ca < EL/3, the undesirable operation of the earth leakage circuit breaker due to the leak current is prevented. <IMAGE> |
