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Elevator Drive Control During Power Outages

A power interruption, elevator technology, applied in the field of elevators, can solve problems such as speed drop, passenger injury, passenger discomfort, etc.

Active Publication Date: 2020-06-23
INVENTIO AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in a sharp drop in speed which, as mentioned above, will be uncomfortable and disturbing for passengers riding in the elevator car, and in some cases may even result in injury to the traveling passenger

Method used

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  • Elevator Drive Control During Power Outages
  • Elevator Drive Control During Power Outages
  • Elevator Drive Control During Power Outages

Examples

Experimental program
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Embodiment Construction

[0037] Conventional elevator installations for the method and device according to the invention such as figure 1shown. The installation is usually defined by a hoistway delimited by walls within the building, in which the counterweight 2 and the car 4 are able to move in opposite directions along guide rails. Suitable traction means 6 , such as ropes or belts, support and interconnect the counterweight 2 and the car 4 . In this embodiment, the weight of the counterweight 2 is equal to the weight of the car 4 plus 40% of the rated load that can be accommodated in the car 4 . The traction device 6 is fastened at one end to the counterweight 2 , passes over a traction sheave 8 located in the upper region of the hoistway, and is fastened at the other end to the elevator car 4 . Of course, those skilled in the art will readily appreciate that other tether arrangements are equally possible, and that the counterweight balance factor can be varied as desired to meet specific specifi...

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PUM

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Abstract

A drive control method and system for controlling an inverter (28) during a power outage. A method of operating an elevator drive (20) during a power outage comprises the steps of: predetermining at the start of a power outage whether the motor (12) will operate in a motor mode, a balancing mode or a regenerative mode, and A predetermined mode of operation controls the inverter (28).

Description

technical field [0001] The present invention relates to elevators, and more particularly, to a drive control method and system for controlling an inverter during a power interruption. Background technique [0002] A conventional traction elevator typically includes a car, a counterweight, and a traction device such as ropes, cables or belts interconnecting the car and counterweight. The traction device passes around and engages the traction pulley, which is turned by a motor, which in turn is driven by a drive. The motor and traction sheave rotate simultaneously to drive the traction unit along the elevator hoistway, thereby driving the interconnected car and counterweight. At least one brake is used with the motor or traction sheave to stop and hold the elevator stationary within the hoistway. The elevator controller monitors the drive of the elevator and thereby the movement of the elevator in response to a travel request or call entered by a passenger. [0003] Due to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/02
CPCB66B5/02B66B1/308B66B1/3407B66B5/027
Inventor 罗曼·卡门青德托马斯·埃林格奥姆·普拉卡什
Owner INVENTIO AG