| 摘要 |
PROBLEM TO BE SOLVED: To save a space required, by connecting a charging transformer to the contacts of a first electromagnetic switch and a second electromagnetic switch provided between a first inverter and a first AC motor, and between a second inverter and a second AC motor respectively, and along with it, connecting a third electromagnetic switch to the positive power input terminal of the first inverter. SOLUTION: A first AC motor 1 and a second AC motor 2 are connected to a first inverter 3 and a second inverter 4 respectively, and a first electromagnetic switch 5 and a second electromagnetic switch 6 are inserted and connected between the first inverter 3 and the first AC motor 1, and between the second inverter 4 and the second AC motor 2 respectively. And a charging transformer is connected to the contacts of those first and second electromagnetic switches 5, 6. Besides, the positive power input terminal of the first inverter 3 is connected to a third electromagnetic switch 11 which switches the positive power input terminal over to the output terminal of a charging rectifier circuit 8 or the positive terminal of a battery, and the high-frequency current of the first inverter circuit 3 is transmitted to the charging transformer 7. |
