Motor stator current spectrum analysis equipment abnormity determination method

A technology of equipment abnormality and motor stator, which is applied in the electrical field, can solve the problem of unsatisfactory judgment of the severity of the abnormality, and achieve the effect of preventing major failures

Active Publication Date: 2018-06-15
HAINAN JINHAI PULP & PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both at home and abroad have correspondingly researched motor voltage and current data processing and analysis methods, but it is not ideal for judging the severity of abnormalities in practical applications

Method used

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  • Motor stator current spectrum analysis equipment abnormity determination method
  • Motor stator current spectrum analysis equipment abnormity determination method
  • Motor stator current spectrum analysis equipment abnormity determination method

Examples

Experimental program
Comparison scheme
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Embodiment

[0026] Such as Figure 1~4 Shown: a method for judging the abnormality of the motor stator current spectrum analysis equipment, including the following steps:

[0027] (1) Motor current signal acquisition

[0028] The motor 4 equipment is running online, and a signal acquisition device is used to collect data. The signal acquisition device includes a current sensor 1 connected to the power line 3 of the motor 4 equipment, and an oscilloscope 2 connected to the current sensor 1;

[0029] (2) Monitor for abnormalities

[0030] Described oscilloscope 2 carries out filtering and Fourier transform to the collected data, checks whether the amplitude of the rotational speed frequency of motor frequency spectrum is higher than normal amplitude, if higher than normal amplitude, then there is abnormality, enters step (3);

[0031] (3) Analysis of abnormal types

[0032] According to the different passing frequencies generated by the motor 4 and the mechanical equipment it carries whe...

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Abstract

The invention discloses a motor stator current spectrum analysis equipment abnormity determination method. The method comprises steps of motor current signal acquisition, abnormity existence monitoring, abnormity type analysis and abnormity severe degree determination. Firstly, a motor current signal is acquired, whether a signal acquisition point is accurate is confirmed, abnormity existence is confirmed and analyzed, acquired signals are filtered, through continuous practice, the magnitude of the motor abnormity passing frequency is found to be relevant to the motor abnormality severe degree. The method is advantaged in that the abnormality severe degree of motor equipment can be rapidly and accurately analyzed online, whether emergent shutdown maintenance is needed can be determined, and the great equipment fault can be prevented in advance.

Description

technical field [0001] The invention relates to the field of electrical technology, in particular to a method for judging the abnormality of a motor stator current spectrum analysis device. Background technique [0002] Modern industrial production and our daily life are almost inseparable from various motors. Asynchronous motors are widely used in the production and life of human society because of their simple structure, sturdy and durable, simple control, convenient use, and adaptability to various complicated working environments. They are the motors with the largest consumption and the widest coverage. In actual operation, the failure of the asynchronous motor will not only damage the motor itself, but also affect the entire production process, and even endanger personal safety, causing huge economic losses and bad social impact. Therefore, the normal operation of the asynchronous motor is of great significance to ensure the safety, high efficiency, high quality and lo...

Claims

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Application Information

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IPC IPC(8): G01R23/16G01R31/34
CPCG01R23/16G01R31/343
Inventor 董益才
Owner HAINAN JINHAI PULP & PAPER
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