| 摘要 |
PROBLEM TO BE SOLVED: To provide an inverter circuit which offers a filter function on an input side at all times, along with advantages of multi-switching inverter circuits. SOLUTION: An inverter circuit includes a multi-switching DC-AC inverter circuit 5 and a filter circuit for rectifying AC power to a sine wave voltage. The filter circuit includes a line filter 6 and an input-output filter 7. The line filter 6 is made up of reactors L1 and L2, put in each AC line 10 or 11 extending from a DC-AC inverter circuit 5, and a capacitor C1 inserted in a line for joining these AC lines 10 and 11. The input-output filter 7 is constituted of a common mode reactor L3 in the AC lines 10 and 11, and capacitors C3 and C4 in each line for joining the AC lines 10 and 11 to a given voltage point. |
