Controller for AC rotary machine and motor vehicle
US12017540B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2021 |
| Grant date | Jun 25, 2024 |
| Priority date | — |
| Expiry date | Jul 15, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
To provide a controller for AC rotary machine and a motor vehicle which can solve the countermeasure against heat of the inverter, and the generation of sound or electric resonance, at the same time. A controller for AC rotary machine turns on and off a plurality of switching devices which the inverter has at PWM frequency, based on the n-phase voltage command values; detects the temperature of the inverter; changes the PWM frequency based on the detected temperature of the inverter; and changes the PWM frequency out of range of the avoidance frequency band, when the PWM frequency after change is within the range of the avoidance frequency band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.