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Emergency Elevator Power Management

A technology for elevators, elevator cars, used in elevators, lifts, transportation and packaging in buildings

Active Publication Date: 2021-08-10
OTIS ELEVATOR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One way to meet OEO requirements is to include multiple high capacity emergency generators, but this introduces significant cost

Method used

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  • Emergency Elevator Power Management
  • Emergency Elevator Power Management

Examples

Experimental program
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Embodiment Construction

[0026] Example embodiments of the present invention facilitate maximizing the number of elevator cars available for moving passengers within the power limits of the power supply for the elevator. Embodiments of the present invention are particularly suitable for controlling elevator system operation in situations where emergency or backup power is required to operate the elevator system. The way the elevator machine moves the elevator cars is dynamically adjusted to maximize the number of cars being used while keeping the power limit within the capacity of the backup power supply. Predicting, monitoring, and controlling the drive and regenerative power of an elevator system according to embodiments of the present invention allows the peak drive and regenerative power of an elevator system to be kept within desired limits while enabling the use of elevator cars during evacuation operations (OEO). Maximize the number of compartments.

[0027] figure 1 Selected portions of the ...

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PUM

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Abstract

An exemplary exemplary embodiment of 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 cars, At least some of the elevator machines operate in a first mode including consuming power and a second mode including generating power, respectively; a power supply having a power output threshold and a power intake threshold; and at least one controller , the at least one controller configured to determine when a power source is providing power to the elevator system, and dynamically adjust how the plurality of elevator machines move the elevator cars so that the elevator cars used to move passengers The amount is maximized while keeping the power consumption of the elevator system below the power output threshold and the power production of the elevator system below the power intake threshold.

Description

Background technique [0001] Elevator systems can be used to transport passengers between different floors in a building. A typical traction-based elevator system includes an elevator car and a counterweight associated with a corresponding machine responsible for moving the elevator car. Some elevator machines are capable of operating in both modes. In a motoring or power consumption mode, the machine draws power from the utility grid or an emergency generator, such as when an elevator car starts moving or lifts a positive load. In power regeneration mode, the machine operates as a generator producing electricity that can be provided back into the utility grid, an emergency generator, or an energy storage device. For example, a regenerative mode may occur when a moving car is stopped or a negative load is lifted based on the movement of the elevator car under appropriate circumstances. [0002] Many elevator systems include backup power to allow the elevator system to operat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B1/18B66B5/02B66B11/04
CPCB66B1/18B66B5/02B66B11/04B66B1/302B66B5/021B66B1/2458B66B2201/216B66B1/28B66B1/32B66B1/30B66B2201/301
Inventor B.J.穆拉T.法鲁基
Owner OTIS ELEVATOR CO