Symmetric drive method for DC motor in elevator door motor system

A technology for DC motors and elevator door operators, which is applied in the direction of single DC motor starters, motor generators/starters, etc., which can solve the problems of excessive energy, consumption, and poor energy saving, and achieve the effect of improving energy saving

Inactive Publication Date: 2015-03-25
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the DC motor drive mode of the elevator door machine system is: in the process of opening and closing the door of the elevator, the DC motor runs forward and reverse; Torque, which is convenient for reverse movement next time, but it also consumes a lot of energy during this period, and the energy saving performance is poor

Method used

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] Such as Figure 1-2 Shown, the concrete steps of the method of the present invention have the following points:

[0019] Step 1, establish the H-bridge driving circuit of the DC motor in the elevator door operator system, set the switching devices VT1 and VT4 as the first group of switching devices, and VT2 and VT3 as the second group of switching devices;

[0020] Step 2, when the elevator power is turned on, the elevator landing door is closed, the waveforms of the first group of switching devices and the second group of switching devices are symmetrical, and the on and off of the two groups of switches are switched alternately, so that the DC motor obtains positive and negative voltages in sequence, The DC motor shows a stalled state;

[0021] Step 3, when the elevator floor door opens the door, the door signal of the first group of switching devices beco...

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Abstract

The invention discloses a symmetric drive method for a DC motor in an elevator door motor system. An elevator continues to supply power to the DC motor after a door is opened or closed, gate signals of a switching component on an H bridge are converted to symmetric pulse signals with the duty ratio being 50%, and a rotation shaft of the motor is in a static state. Under the state, the torque direction of the rotation shaft of the DC motor is frequently and regularly switched between the forward direction and the backward direction, the motor is in the stalled state, and the stalled state can not be easily changed through external force. Due to the fact that when an elevator landing door is in an opened state and a closed state, the state of the landing door can not be changed by external force manually, the symmetric drive method meets the above requirements, and the reliability of the elevator landing door can be better guaranteed. When the motor is in the stalled state, only the inside resistance of the motor consumes energy, the energy loss is greatly reduced, the motor also has certain moment, and therefore the energy conservation performance of the elevator door motor system is improved.

Description

technical field [0001] The invention belongs to the technical field of motor control, and in particular relates to a symmetrical driving method of a DC motor used in an elevator door machine system. Background technique [0002] Due to its wide speed range, large overload capacity, good precision, excellent control performance, and the ability to achieve frequent quick start, brake and reverse, etc., DC motors are widely used in industries such as mining, transportation, and construction. The frequent opening and closing of the elevator door is just in line with the above advantages, so the DC motor is also widely used in the elevator door machine system. At present, the DC motor drive mode of the elevator door machine system is: in the process of opening and closing the door of the elevator, the DC motor runs forward and reverse; The torque is convenient for the next reverse movement, but it also consumes a lot of energy during this period, and the energy saving performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P1/22
CPCH02P1/22
Inventor 蒋益兴薛洋陈春花马冬梅王通岩
Owner CHANGZHOU UNIV
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