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A control system and control method for an elevator brake

A technology of control system and control method, which is applied in hoisting devices and other directions, can solve problems such as high cost, high failure rate, and large operating noise, and achieve the effects of reducing noise, avoiding danger, and ensuring reliable opening

Active Publication Date: 2016-05-25
SHANGHAI GIE EM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems of high cost, high operating noise and high failure rate in the existing elevator brake control technology, an elevator brake control technology is provided. The advanced electronic switch realizes the integration of the two, reduces the cost, reduces the noise when the elevator brake is activated, reduces the number of maintenance and inspection points, and reduces the failure rate

Method used

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  • A control system and control method for an elevator brake
  • A control system and control method for an elevator brake
  • A control system and control method for an elevator brake

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0084] see Figure 5 , which shows the architecture diagram of the control system provided in this example. It can be seen from the figure that this example makes full use of the existing system of the elevator. The switch control unit 10 in the scheme is placed in the elevator logic control MCU, and the power adjustment control unit 20 is placed in the motor control MCU (DSP). The IGBT module serves as the turn-off electronic switch 2 and the turn-off electronic switch 7 in the scheme.

[0085] The P terminal of the inverter DC bus is connected to the upper end of the IGBT, the current sampling unit 8 is connected to the lower end of the IGBT, the positive end of the voltage adjustment circuit 3 and the voltage sampling unit 5 are connected to the middle end of the IGBT, and the N terminal of the inverter DC bus Connect to the negative terminal of voltage adjustment 3 and voltage detection 5. The rest of the solutions are the same as above, and will not be repeated here.

...

example 2

[0093] see Figure 6 , which shows the architecture diagram of the control system provided in this example. It can be seen from the figure that in this example, the switch control unit 10, the power adjustment control unit 20, the drive circuit 1 and the drive circuit 6 are placed on an independently arranged PCB, and separate IGBTs are adopted.

[0094] Wherein, the P terminal after rectification is connected to the upper end of IGBT2, the lower end of IGBT2 is connected to the voltage adjustment circuit 3, the voltage adjustment circuit 3 is connected to the positive end of the voltage sampling unit 5 and the upper end of the current sampling unit 8, and the current sampling unit 8 The lower end is connected to the upper end of the IGBT7, the voltage adjustment circuit 3 is connected to the negative end of the voltage sampling unit 5, and the voltage adjustment circuit 3 is connected to the N end of the rectified power supply.

[0095] The control system thus formed, when t...

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Abstract

The invention discloses an elevator brake control system and a control method. According to the scheme, a power supply regulation circuit is adopted to regulate input PN voltage into direct current voltage required by elevator brake control through closed-loop control, and current change required by elevator brake control can be controlled according to demands; meanwhile, a switch circuit is matched with the power supply regulation circuit, and the switching of current regulated through the power supply regulation circuit is controlled, so that a brake power supply is shut off. The brake control scheme replaces the traditional brake power supply and brake contactor, reduces the cost, eliminates the noise produced during the operation of the contactor, improves the reliability of circuits, reduces the quantity of maintenance points, can control the operation process of a brake through current control, reduces the noise produced during the operation of the brake, and cancels continuous current circuits at two terminals of a brake coil.

Description

technical field [0001] The invention relates to elevator control technology, in particular to an elevator brake control technology. Background technique [0002] Different hosts have different brake voltages. Generally, different brake power supplies need to be designed to cooperate. There are brake power supplies that can be set, but they cannot automatically adjust the pulse amplitude of the output voltage, which will affect the brake coil and freewheeling diode. , let alone check the abnormality of the regulation loop itself, and cannot automatically close when abnormal. [0003] At present, domestic elevators basically use permanent magnet synchronous hosts, and they all adopt two-stage voltage control. The maintenance voltage is simply controlled by half of the brake voltage. In this way, when the grid voltage is high, the chopping voltage will increase, affecting The turn-to-turn insulation of the brake coil, and when the voltage is low, because the output voltage can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D5/30
Inventor 涂长祖王得利季伟周根富石岩峰
Owner SHANGHAI GIE EM
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