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Power balance adjustment method and system of frequency conversion transmission of belt conveyor

A technology of belt conveyor and frequency conversion drive, which is applied in the direction of conveyor, transportation and packaging, etc., can solve problems such as poor effect, achieve good adjustment effect, high cost performance, and save relay equipment and power supply

Inactive Publication Date: 2012-08-01
ZHENGZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a power balance adjustment method of frequency conversion drive of belt conveyor to solve the problem of poor effect of existing power adjustment methods

Method used

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  • Power balance adjustment method and system of frequency conversion transmission of belt conveyor
  • Power balance adjustment method and system of frequency conversion transmission of belt conveyor
  • Power balance adjustment method and system of frequency conversion transmission of belt conveyor

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Such as figure 1Shown is the G300 tubular belt conveyor project of a coal preparation plant. The total length of the G300 tubular belt conveyor in the coal preparation plant is 1250 meters. It is driven by two 200KW three-phase AC motors at the head and tail respectively. The supporting motor model is Y355M- 4. 380V 50Hz, rated current 355A. figure 2 It is a schematic block diagram of the long-distance G300 tubular belt conveyor head and tail frequency conversion synchronous control and power balance control system of the embodiment of the present invention. The control system uses a computer as the control center and WinCC as the monitoring configuration software. The head and tail inverters use PI7800 250KW general constant torque inverters with built-in RS485 communication boards. The data communication between the computer and the inverter of the machine head is realized through the RS485 interface and a special shielded cable. The computer realizes data communic...

Embodiment 2

[0043] Such as image 3 As shown, in Embodiment 2, the PLC directly communicates with the head frequency converter and the machine tail frequency converter.

Embodiment 3

[0045] Such as Figure 5 As shown, in order to realize long-distance application, Embodiment 2 is improved to obtain Embodiment 4, and a wireless transmission system is added between the inverter of the machine head and the PLC.

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Abstract

The invention relates to a power balance adjustment method and system of frequency conversion transmission of a belt conveyor. The system comprises a machine head frequency converter, a machine tail frequency converter and an industrial computer control system. The system is further provided with a PLC (Programmable Logic Controller) which is used for controlling and connecting with the machine tail frequency converter; and the PLC is communicated with an industrial computer through a wireless control network and is communicated with the machine tail frequency converter, so as to be used for carrying out power balance adjustment on the machine head frequency converter and the machine tail frequency converter. The machine tail frequency converter is communicated with the industrial computer through an RS485 network. With the adoption of the power balance adjustment method disclosed by the invention, the real automatic real-time adjustment can be realized, and the adjustment effect is good.

Description

technical field [0001] The invention relates to the technical field of power balance adjustment of frequency conversion drive of belt conveyor. Background technique [0002] With the development of belt conveyors in the direction of long distance, large capacity, high speed and high reliability, the power balance adjustment of the head and tail drive variable frequency motors has become the core of the belt conveyor frequency conversion speed regulation automatic control system Technical issues, and related to the dynamic stability of the belt conveyor work. In the traditional dual-machine frequency conversion drag scheme, the master-slave control function of the inverter is generally used, that is, one inverter is set as the master inverter, and the other is set as the slave inverter. RS485 communication, the frequency of the main inverter is set by the computer or the inverter panel, and the frequency of the slave inverter adopts the setting mode of "frequency tracking + ...

Claims

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Application Information

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IPC IPC(8): B65G23/24
CPCY02P70/10
Inventor 李永刚赵向南常红星李洪涛郭丽丽
Owner ZHENGZHOU UNIV
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