Lift controller

Abstract

The present invention relates to elevator controls. The conventional elevator control device consumes electric power in synchronization with the operation of the elevator, and thus cannot reduce electric power consumption at the peak time of electric power demand. The elevator control device of the present invention includes a rectifier for rectifying and converting alternating current into direct current, an inverter for converting the direct current into alternating current with variable voltage and variable frequency, and using the alternating current with variable voltage and variable frequency to drive the elevator to run. The electric motor of the present invention is characterized in that the elevator control device further includes a chargeable electric energy storage device, and a charge and discharge control means for controlling the charge and discharge of the electric energy storage device according to the hourly charge target value of the electric energy storage device.

Description

technical field [0001] The invention relates to elevator controls using electrical energy storage devices. Background technique [0002] Figure 5 Indicates an existing elevator control device. Should Figure 5 It is a structural diagram of an existing elevator control device. in the Figure 5 Among them, 1 is a power frequency AC power supply (hereinafter referred to as "mains"), 2 is an electric motor such as an induction motor, 3 is a traction machine, 4 is a traction wire rope, 5 is an elevator car, and 6 is a counterweight. Driving the traction machine 3 to rotate can make the elevator car 5 and the counterweight 6 connected to the two ends of the traction wire rope 4 go up and down, and the passengers in the car are transported to a predetermined floor. [0003] 8 is a controller, which determines the start and stop of the elevator, and generates its position and speed commands at the same time. 11 is a rectifier, which consists of a diode etc. The rectifier 11 rec...

AI Technical Summary

Problems solved by technology

For example, in the hot summer afternoon, the power demand reaches its peak. It is hoped to reduce the power consumption during this time period, but the existing elevator control device cannot sufficiently reduce the power consumption during the peak power demand.

[0009] In this way, the conventional elevator control device consumes power synchronously with the operation of the elevator, so the power consumption cannot be reduced during peak power demand.

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