Leakage current detection and switched on/off compensating current

A power conversion circuit comprising:

• a converter which converts an alternating current into a direct current;
• a DC link;
• an inverter, connected through said DC link to said converter, which converts a direct current into an alternating current to output the alternating current to a load;
• a leakage current detector which outputs a detection current corresponding to a leakage current leaking from said load;
• a compensating current output section having a compensating current output end which outputs a compensating current compensating for said leakage current in response to said detection current, said compensating current output end being connected to a location where the leakage current of said load leaks;
• and
• an open/closed switch which sets whether said detection current is input to said compensating current output section or not by switching between an open state and a closed state, said switch conducting said detection current into said compensating current output section while in said closed state, said switch blocking said detection current from flowing into said compensating current output section while in said open state.