Electric motors and methods of controlling thereof
US12046956B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 26, 2021 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Apr 26, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2207/055
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electric motors and methods of controlling electric motors are described herein. The electric motors include a mobile component having at least one permanent magnet coupled thereto and a stator spaced apart from the mobile component. The stator includes at least one stator pole having a ferromagnetic core and a coil wrapped around the ferromagnetic core. The ferromagnetic core is naturally attracted to the at least one permanent magnet. The motors also include a magnetic position control system configured to monitor a position of the at least one permanent magnet relative to the stator and controllably deliver an electric pulse to the coil of each stator pole to generate a repulsive magnetic flux on the ferromagnetic core to cancel an attraction force between the ferromagnetic core and the at least one permanent magnet to control movement of the mobile component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.