| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power converter with improved reliability, in a circuit system with an output short circuit mounted thereon. <P>SOLUTION: A grid connection device 100A includes: an inverter circuit 3 configured so as to output an AC voltage to power lines Lp and Ln; an output short circuit 4 configured so as to short-circuit the power lines Lp and Ln; and a decision unit 20A deciding whether the output short circuit 4 has failed or not, on the basis of the driving state of the inverter circuit 3 and the state of a current flowing through the output short circuit 4. <P>COPYRIGHT: (C)2011,JPO&INPIT |
