ROTATING ELECTRICAL-MACHINE CONTROL SYSTEM AND METHOD OF MANIPULATING MAGNET TEMPERATURE OF ROTATING ELECTRICAL MACHINE

摘要

A rotating electrical-machine control system (10) is provided with: a rotating electrical-machine (20) comprising a rotor (26) further comprising permanent magnets (30, 31) that are divided into a dividing-number (n) of sections; an inverter circuit (18) that drives the rotating electrical-machine (20) by PWM control, using a carrier wave having a carrier frequency of f; a storage unit (60) that has stored therein a relationship file (62) that indicates the relationship between the dividing-number (n) of the magnets, the magnet temperature, and the carrier frequency (f); and a control apparatus (50). The control apparatus (50) comprises a condition acquisition processing unit (52) for acquiring the target magnet temperature, a rotational-speed acquisition processing unit (54) for acquiring the rotational speed of the rotating electrical-machine (20), and a carrier-frequency setup processing unit (56) for providing the dividing-number (n) of the magnets and the target magnet temperature to the storage unit (60) and conducting a search therein, and giving the corresponding carrier frequency (f) to an inverter control unit (48) as an instruction.