Fault management system for a switched reluctance motor
US4896089A · kind A · utility
86Cited by
6References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1989 |
| Grant date | Jan 23, 1990 |
| Priority date | — |
| Expiry date | Jan 31, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/343
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fault management system for a switched reluctance motor detects faults through phase current differential sensing and phase flux differential sensing and isolates any fault by deactivating any faulted phase. Motor operation continues through the remaining phases. A speed control circuit maintains the normal operating speed of the motor, despite the deactivation of one or more phases. Starting the motor when stopped in a "dead zone" created by a faulted phase is accomplished by using the intact phases to generate negative torque to move the rotor out of the dead zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.