Electromechanical propulsion system having a wireless power transfer system
US10211676B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2016 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | Apr 15, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B11/0407
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An elevator system includes an elevator car having an electrically powered car subsystem. A guide rail of the elevator system is constructed and arranged to guide the elevator car along a hoistway and in a direction of travel. An electromechanical propulsion system includes plurality of primary windings positioned along the hoistway, and a permanent magnet coupled to the elevator car for imparting motion to the elevator car in response to a drive excitation. A secondary winding is coupled to the elevator car and disposed adjacent to the permanent magnet along the direction of travel, and wherein the secondary winding is configured to utilize an excitation switching frequency ripple to generate a current to power the car subsystem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.