| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an easy-to-construct power conditioner with excellent safety allowing the reduction of costs. <P>SOLUTION: The power conditioner comprises an inverter 12 converting a direct-current output into an alternate-current based on power generation of a power generation installation 21, a system interconnection switch 13 connecting the inverter 12 to a system 22, and a control part 15 controlling the AC conversion operation of the inverter 12 and opening/closing operations of the system interconnection switch 13. The control part 15 diagnoses a failure of the system interconnection switch 13 according to control states of the inverter 12 and the system interconnection switch 13, a first voltage generated on the system 22 side of the system interconnection switch 13, a second voltage generated on the inverter 12 side of the system interconnection switch 13, and a threshold related to a system voltage of the system 22. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
