| 摘要 |
A control device (50) for an IPM-type brushless motor (3) includes a fundamental-current calculating section (52) for calculating fundamental-wave currents indicating winding current values to be set in maximum-torque control, a correction-component calculating section (59) for calculating a first harmonic component (B sin 6(theta+beta)) for cancelling a torque ripple for a magnet torque and a second harmonic component (A sin 6(theta+alpha)) for cancelling a torque ripple for a reluctance torque based on phase-current values detected by a current sensor (64), a correction map (58) storing relationships between the phase currents and parameters (A, B, alpha, and beta) of the first harmonic component and the second harmonic component, and a current-correcting section (60) for superimposing the first harmonic component and the second harmonic component respectively on the fundamental-wave currents to correct a current to be supplied so as to generate current command values (Id' and Iq'). |
