Method and system for controlling a permanent magnet machine
US6774592B2 · kind B2 · utility
12Cited by
17References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2001 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Aug 13, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Method and system for controlling a permanent magnet machine are provided. The method provides a sensor assembly for sensing rotor sector position relative to a plurality of angular sectors. The method allows starting the machine in a brushless direct current mode of operation using a calculated initial rotor position based on angular sector position information from the sensor assembly. Upon reaching a predefined mode-crossover criterion, the method allows switching to a sinusoidal mode of operation using rotor angle position based on extrapolating angular sector position information from the sensor assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.