Method and system for controlling an electric machine
US12149195B2 · kind B2 · utility
0Cited by
4References
20Claims
0Family size
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Key dates
| Filing date | Dec 23, 2022 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | May 31, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The concepts described herein provide a method, apparatus, and system for controlling an inverter by modifying duty cycles of the PWM control signals in a manner that achieves a minimum duration between consecutive switching events in the inverter, which serves to reduce common mode current in the bearing(s) of an attached rotary electric machine. To minimize the effect of additional current and voltage ripple into the system, the minimum switching duration is defined in relation to a modulation index and geometric location near the sector boundaries of the respective inverter voltage space vector diagram.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.