Compensating hysteresis bands to hold specified switching frequency
US8975855B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2012 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Mar 21, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/092
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control system for compensating a hysteresis band of a switched reluctance (SR) machine having a rotor and a stator is provided. The control system may include a converter circuit and a controller. The converter circuit may be operatively coupled to the stator and include a plurality of switches in selective communication with each phase of the stator. The controller may be in communication with each of the stator and the converter circuit, and configured to monitor at least one phase current of the SR machine relative to a current threshold of the hysteresis band, determine an adjustment value based on a difference between the phase current and the current threshold if the phase current exceeds the current threshold, and compensate the current threshold by the adjustment value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.