Rotary electric machine control device
US10978983B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2018 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | May 29, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/085
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotary electric machine control device that performs drive control on an AC rotary electric machine using an inverter that converts power between DC power and AC power through pulse width modulation based on a carrier frequency, the rotary electric machine control device including: an electronic control unit that is configured to vary the carrier frequency such that the carrier frequency becomes higher as a rotational speed of the rotary electric machine becomes higher so that carrier sideband frequencies, which are frequencies of sideband waves that appear on higher and lower sides of a center frequency that is set in accordance with the carrier frequency, are not included in a frequency band prescribed in advance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.