×

Electrical power system with power limiting to network

  • US 8,714,313 B2
  • Filed: 07/25/2012
  • Issued: 05/06/2014
  • Est. Priority Date: 02/10/2010
  • Status: Active Grant
First Claim
Patent Images

1. An electrical power system for operating elevators, the electrical power system comprising:

  • a plurality of hoisting machines of an elevator, each of the plurality of hoisting machines moving an elevator car in an elevator hoistway; and

    a power supply system that interfaces with an electricity distribution network of a building to transfer power between the plurality of hoisting machines and the electricity distribution network, the power supply system including a control apparatus that determines a power-handling capacity of the electricity distribution network available to the elevators;

    whereinthe power supply system limits a net power flowing from the plurality of hoisting machines to the electricity distribution network to a limit value for net power determined based on the power-handling capacity of the electricity distribution network available to the elevators, andthe electricity distribution network of the building provides power to loads external to the elevator system.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×