Switched reluctance motor drive system and laundering apparatus employing same
US4959596A · kind A · utility
64Cited by
11References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1989 |
| Grant date | Sep 25, 1990 |
| Priority date | — |
| Expiry date | Apr 3, 2009 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06F2103/46
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A microcomputer-based drive system for a switched reluctance motor requires no rotor position sensor and no discrete current sensors. Phase excitation is synchronized with rotor position by indirectly estimating rotor position according to instantaneous phase inductance. Current regulation is achieved by incorporating pilot devices for current sensing into the switching devices of the power converter and by employing a fixed off-time current chopping strategy. One application is for use in a laundering machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.