System and method for in-vehicle resolver alignment
US11081948B2 · kind B2 · utility
0Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2018 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Sep 5, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric drive system for a vehicle includes a speed/position feedback device coupled to an electric machine and configured to provide an index pulse. The system further includes an inverter having a line voltage sensor. The system includes a controller programmed to, responsive to the electric machine rotating at a generally constant speed without commanding the inverter, generate a resolver offset from a time difference between a zero crossing of a line voltage and the index pulse and operate the inverter according to the resolver offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.