| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress a temperature rise in a rotary electric machine when the synchronous PWM control is performed in a rotary electric machine control system. <P>SOLUTION: The rotary electric machine control system 10 includes: a rotary electric machine 12; a control block 14 for the synchronous PWM control; an inverter 16; a control part 40; and a storage part 50. In the storage part 50, data 52 on the number of set synchronizing pulses stores the number of the set synchronizing pulses that is the number of periodic pulses of a carrier per one period of a voltage command value while an optimum carrier phase data 54 obtains, in advance, the relation between a carrier phase and a temperature in the rotary electric machine when operated by the carrier phase, and based on its relation, both data store the optimum carrier phase, in which the temperature in the rotary electric machine is in an optimum condition, for each number of set synchronizing pulses, respectively. In the control part 40, the carrier phase of the inverter 16 is set to the optimum carrier phase in accordance with the operation condition of the rotary electric machine 12. <P>COPYRIGHT: (C)2010,JPO&INPIT |
