ELECTROMECHANICAL PROPULSION SYSTEM HAVING A WIRELESS POWER TRANSFER SYSTEM

摘要

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.

主权项

1. An elevator system comprising:
an elevator car including an electrically powered car subsystem; a guide rail constructed and arranged to guide the elevator car along a hoistway and in a direction of travel; a plurality of primary windings positioned along the hoistway; a permanent magnet coupled to the elevator car, the plurality of primary windings and the permanent magnet defining an electromechanical propulsion system for imparting motion to the elevator car in response to a drive excitation; and a secondary winding 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.