| 摘要 |
PROBLEM TO BE SOLVED: To surely detect shunt current to stably control a multi-phase AC motor.SOLUTION: A motor controller for driving a multi-phase AC motor 20 by controlling an inverter 30 connected to a DC power supply 60 comprises: a PWM waveform generation unit 46 for generating a plurality of PWM waveforms obtained by performing pulse width modulation on each of target voltage waveforms for making the total sum of instantaneous voltage values applied to respective phases of a multi-phase AC motor 20 be 0 on the basis of a current value detected by a current detection unit 42; and a PWM waveform correction unit 48 for performing correction so that pulse widths of the plurality of PWM waveforms generated by the PWM waveform generation unit 46 are equal to or larger than predetermined time. |
