| 摘要 |
PROBLEM TO BE SOLVED: To perform current feedback control of a rotary electric machine by detecting the current of the rotary electric machine efficiently without limiting the operation of the rotary electric machine excessively with a transient current generated when switching an inverter control system, and without limiting use of a current sensor more than necessary.SOLUTION: A determination grace period MT of a previously specified period from the control system switching time when an inverter control unit 15 has switched the execution control system is set. When a determination is made that any one phase out of three phases is an overcurrent phase, an output limit determination unit 13 suspends determination of the output limit SD of a rotary electric machine MG until the determination grace period MT elapses. At least during the determination grace period MT, a current detection unit 11 calculates the current value of the overcurrent phase on the basis of the measurement results Mi of the current sensor corresponding to other two phases different from the overcurrent phase, and detects the actual currents Iu, Iv, Iw of all three phases. |
