Elevator system implementing a multi-linear multi-phase induction machine including a plurality of stators controlled in parallel
AssigneeOtis Elevator Company
InventorDan Vasile
Life of this patent
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Abstract
A multi-phase linear induction machine includes at least one armature which can be disposed in an elevator hoistway and is configured to electrically conduct electromagnetic energy, and a plurality of stators which can be coupled to an elevator car that is configured to travel through the hoistway. Each of the stators are configured to conduct electrical current therethrough and generate an electromagnetic field in response to the current. The electromagnetic field induces eddy currents that flow through the at least armature to generate a magnetic force to move the elevator car through the hoistway.
Claims20
A multi-phase linear induction machine included in an elevator system, the multi-phase induction machine comprising:
- at least one armature disposed in a hoistway and configured to electrically conduct electromagnetic energy;
- and
- a plurality of stators coupled to an elevator car configured to travel through the hoistway, each of the stators configured to conduct electrical current therethrough and to generate an electromagnetic field in response to the current,
- wherein the electromagnetic field induces eddy currents that flow through the at least armature generate a magnetic force to move the elevator car through the hoistway.
A method of controlling a multi-phase linear induction machine included in an elevator system, the method comprising:
- disposing at least one armature in a hoistway to electrically conduct electromagnetic energy;
- coupling a plurality of stators to an elevator car configured to travel through the hoistway;
- conducting electrical current through the plurality of stators to generate an electromagnetic field;
- and
- inducing a flow of eddy currents through the at least armature in response to generating the electromagnetic field to generate a magnetic force that moves the elevator car through the hoistway.
Dependencies are inferred from the claim text.