Torque ripple reduction for a voltage mode motor controller
US7005822B1 · kind B1 · utility
14Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2004 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Dec 24, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.