Sensorless control method and apparatus for a three-phase switched reluctance motor
US11264933B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2021 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | Feb 1, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/185
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sensorless control method and an apparatus for a three-phase switched reluctance motor. The sensorless control method obtains line inductances of three phases according to real-time phase inductances of the three-phase switched reluctance motor and then determines feature points of the line inductances of the three phases. A position angle of the rotor at any time in the next corresponding region is calculated according to an average rotation speed of the rotor in the region corresponding to two adjacent feature points. A control signal is output to realize a precise sensorless control for the three-phase switched reluctance motor. The control apparatus includes a microcontroller, a power conversion circuit, a drive module for the power conversion circuit, a current detection module, a voltage detection module, an input and output module and a direct current regulated power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.