Switched reluctance machine control system and method
US7119512B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2004 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | Feb 13, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/089
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switched reluctance machine system includes a stator, a rotor situated to rotate relative to the stator and a plurality of phase windings situated in the stator. A power supply is connected to the phase windings via power converter and a controller outputs control signals to the power converter to selectively apply power to the phase windings. The controller receives feedback signals from the phase windings that provide phase current information to the controller. The controller is programmed to analyze the phase current information and control the power converter to inject diagnostic pulses into any of the phase windings in which current in the phase winding is below a predetermined level. The rotor position is determined based on detected characteristics of the diagnostic pulses, and the characteristics may be weighted, for example, in response to an estimated position of the diagnostic pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.