Methods for improving rate of rise of torque in electric machines with stator current biasing
US11888424B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2023 |
| Grant date | Jan 30, 2024 |
| Priority date | — |
| Expiry date | May 22, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of controlling an electric machine having a separately excitable rotor and stator includes pulsing the electric machine and controlling the electric machine to an OFF state. Pulsing the electric machine includes exiting the rotor with direction current and the stator with a stator biasing current at the same time to generate magnetic flux in the rotor via two separate paths. Pulsing the electric machine may also include terminating the stator basing current when a desired magnetic flux is generated in the rotor. Pulsing the electric machine may include proving a stator flux to the stator such that the electric machine provides a pulse torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.