| 摘要 |
PROBLEM TO BE SOLVED: To simplify the circuitry of an inverter having a plurality of motors. SOLUTION: Each of motors 89-93 has a plurality of windings wherein the anode terminals of first diodes 66-69 are connected with the low potential side terminal of a DC power supply 55, first switching elements 59-62 are connected between the cathode terminal of the first diode and the high potential side terminal of the DC power supply 55, the cathode terminals of second diodes 70-73 are connected with the high potential side terminals of the DC power supply 55, second switching elements 63-65, 102 are connected between the anode terminal of the second diode and the low potential side terminal of the DC power supply 55, the series circuit of each third diode and each winding is connected between the joint of the first switching element and the first diode and the joint of the second switching element and the second diode thus realizing simple circuitry. |
