System and method for noise reduction in electrified vehicle powertrain with multi-three-phase electric drive
US10137790B2 · kind B2 · utility
2Cited by
7References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 17, 2017 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Feb 17, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electric machine is configured with at least two sets of phase windings. A plurality of power switches is configured to selectively couple voltage terminals to each of the phase windings. A controller is programmed to operate the power switches according to a switching pattern, for each of the sets, updated at intervals defined by a switching frequency such that the switching patterns are different during each one of the intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.