System and method for controlling high-torque, high speed electric motors
US12170467B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2023 |
| Grant date | Dec 17, 2024 |
| Priority date | — |
| Expiry date | May 19, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method includes, at a controller: directing current through a set of coil assemblies in an electric motor based on a first commutation technique; in response to an operating speed of the electric motor exceeding a first operating speed threshold, initiating a transition from the first commutation technique to a second commutation technique; during a transition period, directing current through the set of coil assemblies based on the first commutation technique controlled according to a first pulse width modulation scheme and the second commutation technique controlled according to a second pulse width modulation scheme; and, in response to completion of the transition period, directing current through the set of coil assemblies based on the second commutation technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.