Method of controlling a brushless permanent magnet motor
US11588424B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2019 |
| Grant date | Feb 21, 2023 |
| Priority date | — |
| Expiry date | Dec 3, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of controlling a brushless permanent magnet motor includes measuring a mains power supply voltage of the motor. The method includes determining whether the mains power supply voltage lies within a first range representative of a first country's mains power supply or a second range representative of a second country's mains power supply. The method includes advancing commutation of a winding of the motor relative to a zero-crossing of back EMF in the winding where the mains power supply voltage lies within the first range, and retarding commutation of the winding relative to a zero-crossing of back EMF in the winding where the mains power supply voltage lies within the second range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.