Current limit for an electric machine
US7065437B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2003 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | Mar 15, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/032
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for limiting current and voltage in a PM electric machine comprising: receiving a command indicative of a desired position control; obtaining a velocity value indicative of the rotational velocity of the electric machine; and computing a first voltage threshold for the electric machine based on a selected operating condition. If the voltage command exceeds the first voltage threshold, the method also includes establishing a modified voltage command as substantially equivalent to the first voltage threshold, otherwise establishing a modified voltage command as substantially equivalent to the voltage command.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.