Permanent-magnet fault-tolerant in-wheel motor based on active sensorless strategy and drive and design methods thereof
US12100999B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2022 |
| Grant date | Sep 24, 2024 |
| Priority date | — |
| Expiry date | Sep 29, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2021/005
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a permanent-magnet fault-tolerant in-wheel motor based on an active sensorless strategy and drive and design methods thereof. The present disclosure proposes the permanent-magnet fault-tolerant in-wheel motor drive system based on an active sensorless strategy by considering sensorless operation performance in advance in a motor design stage. The present disclosure adopts fractional-slot concentrated windings, and ingeniously arranges alternating poles, a multi-layer magnetic barrier, and auxiliary permanent magnets, thus improving a sensorless operation accuracy of the motor while ensuring fault tolerance of the motor. The present disclosure proposes a frequency-band-adaptive secondary harmonic suppression strategy at a control layer to suppress an influence of a secondary salient harmonic on position observation and improve dynamic response performance of a system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.