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Permanent magnet synchronous motor health state monitoring method and system and mobile terminal

A technology of permanent magnet synchronous motor and health status, which is applied in the direction of motor generator testing, measuring electricity, measuring devices, etc., and can solve problems such as system failure, industrial production loss, and deterioration

Inactive Publication Date: 2020-04-10
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If these faults are not diagnosed and found in time, they will continue to deteriorate and eventually lead to the failure of the entire system, causing huge losses to industrial production
[0003] Therefore, there is an urgent need to solve the problem of motor temperature increase caused by inter-turn short circuit in the stator winding of permanent magnet synchronous motor

Method used

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  • Permanent magnet synchronous motor health state monitoring method and system and mobile terminal
  • Permanent magnet synchronous motor health state monitoring method and system and mobile terminal
  • Permanent magnet synchronous motor health state monitoring method and system and mobile terminal

Examples

Experimental program
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Effect test

Embodiment 1

[0082] Such as figure 1 As shown, this embodiment provides a method for monitoring the health status of a permanent magnet synchronous motor, including the following steps:

[0083] S1: Select the normal operation data of the permanent magnet synchronous motor under more than two working conditions as the training data set, and input the training data set into the EM algorithm to calculate the required parameters for modeling;

[0084] S2: Obtain the online operation data of the permanent magnet synchronous motor, and establish a multi-modal monitoring model according to the parameters and operation data;

[0085] S3: Combine the evaluation index obtained by the model and the preset failure probability threshold to monitor the health status of the permanent magnet synchronous motor.

[0086] The above method for monitoring the health state of the permanent magnet synchronous motor can detect abnormalities in the operation of the permanent magnet synchronous motor in time, has...

Embodiment 2

[0125] Such as Figure 5 As shown, corresponding to the above-mentioned embodiment 1, this embodiment provides a health status monitoring system of a permanent magnet synchronous motor, including:

[0126] The first unit is used to select the normal operation data of the permanent magnet synchronous motor under more than two working conditions as the training data set, and input the training data set into the EM algorithm to calculate the parameters required for modeling;

[0127] The second unit acquires the online operation data of the permanent magnet synchronous motor, and establishes a multimodal monitoring model according to the parameters and the operation data;

[0128] The third unit optimizes the multi-modal monitoring model by using a preset failure probability index, and monitors the health status of the permanent magnet synchronous motor according to the optimized multi-modal monitoring model.

Embodiment 3

[0130] This embodiment provides a mobile terminal, including: a processor and a memory; the memory is used to store a computer program, and the processor runs the computer program to enable the mobile terminal to execute the health of the permanent magnet synchronous motor Condition Monitoring Method.

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Abstract

The invention relates to the field of permanent magnet motor health state monitoring, and discloses a permanent magnet synchronous motor health state monitoring method and system based on multi-mode canonical correlation analysis to discover abnormal conditions of a permanent magnet motor during multi-working-condition operation in time, and the method and system are convenient to use and easy toimplement. The method comprises the following steps: selecting normal operation data of the permanent magnet synchronous motor under more than two working conditions as a training data set, and inputting the training data set into an EM algorithm to calculate and obtain parameters required by modeling; acquiring online operation data of the permanent magnet synchronous motor, and establishing a multi-modal monitoring model according to the parameters and the operation data; and monitoring the health state of the permanent magnet synchronous motor in combination with the evaluation indexes obtained by the model and a preset fault probability threshold.

Description

technical field [0001] The invention relates to the field of health status monitoring of permanent magnet synchronous motors, in particular to a health status monitoring method, system and mobile terminal of permanent magnet synchronous motors. Background technique [0002] Permanent magnet motors have the advantages of compact structure, small size, light weight, high efficiency, reliable operation, low noise, etc., so they are widely used in various industries, such as mechanical equipment, aerospace, elevators, household appliances, navigation and other fields. In actual operation, the rotor permanent magnets of permanent magnet synchronous motors are easily affected by factors such as armature reaction, operating temperature rise, and brittle sintered rare earth permanent magnet materials, resulting in partial or uniform demagnetization failures, resulting in reduced output torque. And torque ripple, affecting the torque control accuracy and operation reliability of the ...

Claims

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Application Information

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IPC IPC(8): G01R31/34G06F17/15G06F17/16G06F17/18G06Q10/06
CPCG01R31/343G06F17/15G06F17/16G06F17/18G06Q10/06393
Inventor 陈志文魏焱烽彭涛阳春华梁可天彭霞
Owner CENT SOUTH UNIV
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