Method and apparatus for sensing the rotor position of a switched reluctance motor
US5410235A · kind A · utility
35Cited by
10References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1994 |
| Grant date | Apr 25, 1995 |
| Priority date | — |
| Expiry date | Mar 1, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/089
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Apparatus and method for detecting rotor (12) position in a switched reluctance motor (18) having multiple stator phases (A-A', B-B', and C-C'). A multiplexer (48) intermittently connects a known resistor (54) to a non-conducting stator phase. Circuitry (62 and 68) detects the amplitude of the current passing through the resistor (54) and the phase difference between the varying voltage and the current passing through resistor (54). The resulting signal is proportional to the position of rotor (12).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.