| 摘要 |
PROBLEM TO BE SOLVED: To ensure balance in the output currents of respective inverter circuits in combining the output currents of a plurality of lines of the inverter circuits which are parallel driven. SOLUTION: This circuit 30 includes annular magnetic substance cores 3413, 3414, 3423, 3424, when the output currents I1-I4 of 4-line inverter circuits which generate high frequency AC power from the AC power of power utility or the like are combined. One of conductors 3501, 3502 connected to the first group of inverter circuit is inserted into the respective cores from the front side, one of conductors 3503, 3504 connected to the second group of inverter circuit is inserted into the respective cores from the back side, and a plurality of differential transformers which balance the current flowing through a pair of conductors are formed to ensure the current balance of the inverter circuits 1-4. |
