Control device for electric motor
US12348168B2 · kind B2 · utility
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Key dates
| Filing date | Aug 31, 2021 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Dec 5, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2207/05
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control device for an electric motor includes a harmonic voltage calculation unit that calculates a harmonic voltage to be added to a fundamental wave voltage command value, on a two-phase rotating coordinate system synchronized with a rotor phase, and a harmonic phase delay compensation unit that compensates for a phase delay during calculation in the harmonic voltage calculation unit based on a harmonic order of the harmonic voltage and an electrical angular frequency of the fundamental wave voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.