Controller for switched reluctance motor
US5589752A · kind A · utility
26Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1995 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Apr 25, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The generation of oscillations and acoustic noises which result from a rapid change in the magnetic flux upon switching the energization is suppressed, while simultaneously preventing a reduction in the driving efficiency and preventing a resonance from occurring. The current waveform as the current rises or fails is switched in accordance with the rotational speed of the SR motor to minimize a change in the magnetic flux, thus suppressing a reduction in the driving torque. A time interval required for the current to rise or fall is chosen to be greater than one-half the period of the natural frequency of SR motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.