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Load controller for elevator and frequency converter for elevator

A technology of load controller and frequency converter, applied in the field of elevators, can solve the problems of noise and arc drawing, and achieve the effect of eliminating noise and arc drawing, reducing cost, and improving reliability and life.

Inactive Publication Date: 2014-12-17
SHANGHAI GIE EM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a solution that can replace the existing elevator contactor, so as to eliminate the noise and arcing problems when the existing elevator contactor operates, reduce the number of daily maintenance points, and improve the reliability and life of the elevator system

Method used

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  • Load controller for elevator and frequency converter for elevator
  • Load controller for elevator and frequency converter for elevator
  • Load controller for elevator and frequency converter for elevator

Examples

Experimental program
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Effect test

example 1

[0039] This example utilizes the elevator load controller provided by this program to form a new type of elevator inverter, in which the electronic switch that can be turned off uses IGBT, the detection of the electronic switch that can be turned off uses voltage detection, and the charging circuit uses soft contact devices and soft-start resistors.

[0040] see image 3 , which shows the system architecture diagram of this example. As can be seen from the figure, the entire application system includes a drive circuit 11, an IGBT 10, a voltage detection unit 12, a smoothing capacitor 13, a pick-up crystal 14, a pick-up resistor 15, a soft-start contactor 16, a soft-start charging resistor 17, a rectifier module 20, inverter module 30 .

[0041] Among them, the P terminal of the three-phase AC power supply rectified by the rectifier module is connected to the upper end of the IGBT 10, and the two ends of the IGBT 10 are connected in parallel with the soft-start charging resis...

example 2

[0049] This example utilizes the elevator load controller provided by this solution to form another new type of inverter for elevators. The electronic switch that can be turned off uses IGBT, the detection of the electronic switch that can be turned off uses current detection, and the charging circuit can be used directly. This is achieved by turning off the duty cycle of the electronic switch conduction.

[0050] see Figure 4 , which shows the system architecture diagram of this example. As can be seen from the figure, the entire application system includes a drive circuit 11, an IGBT 10, a voltage detection unit 12a, a current detection unit 12b, a smoothing capacitor 13, a pick-up crystal 14, a pick-up resistor 15, an inductor 18, a freewheeling diode 19, a rectifier Module 20, inverter module 30.

[0051] Wherein, the P terminal of the three-phase AC power rectified by the rectifier module 20 is connected to the upper terminal of the IGBT 10, the lower terminal of the I...

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Abstract

The invention discloses a load controller for an elevator and a frequency converter for the elevator. The scheme comprises a driving circuit, a turn-off electronic switch and a detection circuit, wherein the turn-off electronic switch is turned on or turned off through the driving circuit; the turning on or turning off condition of the turn-off electronic switch is inspected through the detection circuit. The load controller and the frequency converter have the advantages that the turn-off electronic switch replaces a traditional contactor, the noise produced during the operation of the contactor is eliminated, arc discharge can not occur during turning on and turning off, the equipment size is reduced, the service life is longer, the reliability is better, the turning on and turning off process can also be controlled by controlling the duty ratio of the turning on and turning off of the turn-off electronic switch, requirements of rear terminal load electrical characteristics are met, and regulable functions which can not be realized by the traditional contactor are realized.

Description

technical field [0001] The invention relates to the elevator technology, in particular to the contactor technology in the elevator. Background technique [0002] In order to make effective use of building space and save construction costs, the use of elevators without machine rooms is gradually increasing. Even for elevators with machine rooms, when the location of the machine room is unreasonable, the noise of the contactor action when the elevator starts and stops often causes complaints from users. [0003] see figure 1 , which shows the common main circuit of the elevator. The circuit is mainly formed by the cooperation of soft starting resistor 1, soft starting contactor 2, filter capacitor 3, pick-up crystal 4, pick-up resistor 5 and running contactor 6. In this circuit, in addition to the soft start contactor 2 used inside the inverter, it is generally necessary to set a running contactor 6 at the rear end of the inverter to ensure that when the inverter cannot effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B1/06H02M5/458
Inventor 涂长祖龚金云郭桂东周根富石岩峰
Owner SHANGHAI GIE EM
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