System and method for controlling a position sensorless permanent magnet motor
US6163127A · kind A · utility
76Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1999 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Nov 22, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A position sensorless interior permanent magnet drive system and methods for use in electric and hybrid electric vehicles. The interior permanent magnet drive system and method use two rotor position estimation techniques for low and high speed operation and an initial rotor magnet polarity detection technique used at stand-still conditions. The use of the two different rotor position estimation techniques in combination enhances system efficiency and accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.