Method and apparatus for sensorless operation of brushless permanent magnet motors
Patent
·
OSTI ID:644392
A sensorless method and apparatus for providing commutation timing signals for a brushless permanent magnet motor extracts the third harmonic back-emf of a three-phase stator winding and independently cyclically integrates the positive and negative half-cycles thereof and compares the results to a reference level associated with a desired commutation angle. 23 figs.
- Research Organization:
- Midwest Research Institute, Kansas City, MO (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC36-83CH10093
- Assignee:
- General Motors Corp., Detroit, MI (United States)
- Patent Number(s):
- US 5,739,652/A/
- Application Number:
- PAN: 8-770,862
- OSTI ID:
- 644392
- Resource Relation:
- Other Information: PBD: 14 Apr 1998
- Country of Publication:
- United States
- Language:
- English
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