| 摘要 |
PROBLEM TO BE SOLVED: To suppress hunting of carrier frequency which is changed depending on the operational state of a dynamo-electric machine, even when variation control accompanied by variation in the operational state of the dynamo-electric machine is carried out, like the damping control in a dynamo-electric machine controller.SOLUTION: A dynamo-electric machine 12, a drive circuit 14 connected with the dynamo-electric machine 12, and a dynamo-electric machine controller 30 are mounted on a vehicle 8. The dynamo-electric machine controller 30 includes a damping control unit 32 for damping vibration on a spring of the vehicle 8, an operating state determination unit 34 for determining current operating state of the dynamo-electric machine 12, and a carrier frequency changing unit 36 for changing the carrier frequency f appropriately depending on the operating state of the dynamo-electric machine 12. The carrier frequency changing unit 36 fixes the carrier frequency to a lower one during a variation control mode. Alternatively, the hysteresis width may be widened when switching the carrier frequency. |
