An intelligent comprehensive monitor for three-phase motor

A three-phase motor and monitor technology, applied in computer control, instruments, simulators, etc., can solve the problems of reliability and sensitivity of protection circuits, and achieve powerful effects

Active Publication Date: 2016-05-25
山西华控伟业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the traditional motor protection devices are electronic circuits composed of separate components or integrated circuits. Due to the reasons of devices and circuits, there are some problems in the reliability and sensitivity of the protection circuit.

Method used

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  • An intelligent comprehensive monitor for three-phase motor
  • An intelligent comprehensive monitor for three-phase motor
  • An intelligent comprehensive monitor for three-phase motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment one: if figure 1 As shown, in this embodiment, the host 1 and the current transformer 2 are combined to form an integrated type.

[0028] Such as figure 2 As described above, the present invention is an intelligent comprehensive monitor for a three-phase motor, including signal acquisition, signal intelligent processing, fault parameter storage and programming implementation. In the signal acquisition, the voltage and current signals are processed by ADE7758ARW, and then the processor AT89C51 reads the current and voltage information, and the leakage and switch input are directly input to the I / O port of the processor. The processor processes the input information after receiving it, and then makes corresponding actions, including sending display commands and relay protection actions to STC12LE5612.

[0029] Such as image 3 Said is the acquisition circuit of the current and voltage signals of the present invention. The IAP pin of the ADE7758ARW of the ...

Embodiment 2

[0034] Embodiment two: if Figure 7 As shown, in this embodiment, the main unit 1 and the current transformer 2 are used as separate structures to meet the user's installation requirements of different cabinet types; other structures are the same as in the first embodiment.

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PUM

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Abstract

An intelligent comprehensive monitor for a three-phase motor, which belongs to the technical field of electromechanical protection and fault diagnosis, is characterized in that it monitors the starting and running status of the three-phase motor in real time, including the short circuit that occurs during the starting and running of the motor , locked rotor, overload, phase loss, undervoltage, overvoltage, unbalance, leakage, and light load faults to alarm and protect, and display the operating voltage, current, active power, reactive power, and power factor of the single-phase and three-phase power measurement of the motor , Motor equipment leakage current, motor temperature, motor cumulative running time and clock parameters, record and query the motor operating voltage and current when fault protection occurs. The present invention adopts the separate mechanism of the host machine and the current transformer, which can form a separate type and can be combined together to form an integrated type, which can meet the installation requirements of different cabinet types of users.

Description

technical field [0001] The invention belongs to the technical field of electromechanical protection and fault diagnosis, and relates to the real-time monitoring of three-phase motors during start-up and running states, which can detect motor faults early and give response signals according to different fault types, so as to achieve timely and effective motor protection , A technical solution to prevent destructive and catastrophic accidents. Background technique [0002] The intelligent comprehensive monitor equipment of the three-phase motor means that the motor has a very sensitive protection function when there are short circuit, stalled rotor, overload, phase loss, undervoltage, overvoltage, unbalance, leakage, light load and other faults in the process of starting and running. , can protect the motor timely, effectively and reliably. A motor is an electromagnetic device that converts mechanical and electrical energy. Motors develop with the development of productivity...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042
Inventor 陈威宁牛昱光郭文斌李戈兵丁力贾瑞
Owner 山西华控伟业科技有限公司
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