| 摘要 |
[Problem] To reduce vibrations and noise of a motor to a greater degree than can be achieved in related art. [Solution] Provided are an inverter 5 arranged to drive a motor 2 with voltages outputted from driving elements 7U, 7V, 7W, 8U, 8V, and 8W; a rectifier circuit 3 arranged to rectify an alternating-current power supply 4 to generate direct-current power to be applied to the driving elements 7U, 7V, 7W, 8U, 8V, and 8W; a measuring section 10A arranged to measure a voltage V BUS of the direct-current power; and a control circuit 9 arranged to control the inverter 5 in accordance with a result of a measurement by the measuring section 10A. The control circuit 9 is arranged to vary an amplitude value of a drive signal to be applied to a base or gate of each of the driving elements 7U, 7V, 7W, 8U, 8V, and 8W in a complementary manner in relation to a fluctuation in the voltage V BUS of the direct-current power. |
