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Emergency elevator power management

  • US 10,604,378 B2
  • Filed: 06/14/2017
  • Issued: 03/31/2020
  • Est. Priority Date: 06/14/2017
  • Status: Active Grant
First Claim
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1. An elevator system, comprising:

  • a plurality of elevator cars;

    a plurality of elevator machines, respectively associated with the elevator cars to selectively cause movement of the associated elevator car, at least some of the elevator machines respectively operating in a first mode including consuming power and in a second mode including generating power;

    a power source that provides power for elevator car movement, the power source having a power output threshold corresponding to a maximum power capacity of the power source and a power intake threshold corresponding to a maximum amount of generated power that can be taken in by the power source; and

    at least one controller that is configured todetermine when the power source is providing power for the elevator system, anddynamically adjust how the plurality of machines move the elevator cars to maximize a number of the plurality cars being used to move passengers, to keep power consumption by the elevator system below the power output threshold and to keep power generation by the elevator system below the power intake threshold.

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