Torque ripple reduction for a voltage mode motor controller

Details Torque ripple reduction for a voltage mode motor controller Torque ripple reduction for a voltage mode motor controller

2006-02-28

2006-02-28

Ip, Paul (Department: 2837)

Electricity: motive power systems

Positional servo systems

Frequency- or phase-modulated systems

C318S611000, C318S809000, C318S811000

Reexamination Certificate

active

07005822

ABSTRACT:
A system and method for reducing torque ripple in a motor controller includes a step (60) of measuring an output voltage at each phase of the motor controller. A next step (61) includes determining a voltage mismatch between the phases. A next step (62) includes phase grounding one phase of the motor. A next step (63) includes calculating a voltage gain for the phases to compensate for voltage mismatches therebetween. The compensating gain can include a gain and/or offset, which are applied as a function of motor angle and is used to generate a PWM signal for driving the motor with reduced torque ripple.

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