Sensorless motor control
US8760098B2 · kind B2 · utility
6Cited by
12References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 1, 2011 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | Mar 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/0089
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An method for driving a motor is provided. A plurality of pulse width modulation (PWM) signals are generated from a commanded voltage signal and a commanded angle signal, and these PWM signal are used to drive a motor (which has a plurality of phases). Currents through the phases of the motor are measured, and a Park transformation is performed on the measured currents to determine a projection current measurement. Based at least in part on the projection current measurement, the adjusting the commanded voltage signal and the commanded angle signal can be adjusted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.