Electric machine control method and electric machine control device
US11146196B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2018 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Mar 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric machine control method includes: calculating a voltage command value based on a torque command value to an electric machine; calculating a modulation rate based on a power-supply voltage and the voltage command value; calculating a compensation gain in accordance with the modulation rate, the compensation gain being used to linearize a relationship between a magnitude of the voltage command value and a magnitude of a fundamental wave component of an output voltage to the electric machine; calculating a compensated voltage command value based on the voltage command value and the compensation gain; controlling the output voltage to the electric machine based on the compensated voltage command value; and limiting the compensation gain to be equal to or less than a predetermined upper limit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.