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Permanent magnet motor control method of nonlinear model

A nonlinear model, permanent magnet motor technology, used in motor control, motor generator control, AC motor control, etc., to achieve effective temperature control, abnormal monitoring, and reduction of motor failures

Pending Publication Date: 2020-06-02
YANGZHOU POLYTECHNIC INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing permanent magnet motors will generate high temperature or failure when they work for a long time, so it is necessary to carry out effective control and management to make intelligent processing of high temperature and failure analysis

Method used

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  • Permanent magnet motor control method of nonlinear model

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] see figure 1 , a non-linear model permanent magnet motor control method, the modification method includes;

[0028] The rotor position of the permanent magnet motor is detected by the Hall position sensor, and the corresponding Hall signal is output. The internal temperature of the permanent magnet motor is detected by multiple temperature sensors at multiple points, and the corresponding temperature signal is output. Vibration sensor Detect the vibration of the shaft of the permanent magnet motor, and output the corresponding vibration signal;

[0029] The Hall signal is transmitted to the central processing module, the temperature signal is transmitted to the data processing module, the vibration signal is transmitted to the central processing module, and the data processing module is connected to the central processing module;

[0030] The detected Hall signal is the position information of the rotor in the permanent magnet motor, and the current position informatio...

Embodiment 2

[0034] see figure 1 , a permanent magnet motor control method of a nonlinear model, embodiment one also includes a current sensor and a voltage sensor, the current sensor is used to detect the current current of the stator in the permanent magnet motor, and the voltage sensor is used to detect the permanent magnet The current voltage of the stator in the motor, the current sensor and the voltage sensor are connected to the signal of the data processing module, and the normal current range and the normal voltage range are preset inside the data processing module, and the detected current and voltage will be consistent with the normal The current range and the normal voltage range are compared. If it is out of the normal range, the data processing module will send a fault signal to the central processing module, and the central processing module will stop the permanent magnet motor, so that the fault of the permanent magnet motor can be intelligently detected and processed. Effe...

Embodiment 3

[0036] see figure 1 , figure 2 , a non-linear model permanent magnet motor control method, the frequency reduction work described in the first embodiment is, when the frequency reduction work is issued, the central control module controls the permanent magnet motor stepwise to reduce its power, and the permanent magnet motor is reduced each time 10% of the rated power is gradually reduced for 5 times. After 5 frequency reductions, after working for a period of time, if the final temperature data obtained by the data processing module is lower than the third temperature threshold, the central processing module controls the motor to increase the frequency in turn. Until the rated power is increased, if it is still higher than the third temperature threshold, the central processing module will then reduce the frequency by 10%, and then work for a period of time to detect the temperature until the final temperature is lower than the third temperature threshold, through intelligen...

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Abstract

The invention discloses a permanent magnet motor control method of a nonlinear model. A Hall position sensor, a temperature sensor and a vibration sensor are included, vector control of a permanent magnet motor is realized through coordination of the Hall position sensor and a central processing module, and intelligent over-temperature protection and fault analysis of a permanent magnet are realized through effective detection of the temperature sensor and the vibration sensor. According to the invention, through rotor position information, motor vector control is realized, and temperature control is effective; the temperature and vibration of the motor are monitored through the temperature sensor and the vibration sensor, intelligent over-temperature protection and abnormal monitoring ofthe motor are realized, motor faults are reduced, and the operation safety is improved.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a non-linear model permanent magnet motor control method. Background technique [0002] A permanent magnet synchronous motor (Permanent magnetic synchronous machine, PMSM) is a synchronous motor that is excited by a permanent magnet to generate a synchronous rotating magnetic field. Due to its high efficiency, small torque ripple, fast dynamic response and many other advantages, the permanent magnet synchronous motor has been widely used in the fields of civil control and national defense control. [0003] However, the existing permanent magnet motor will generate high temperature or failure when it works for a long time, so it needs to be effectively controlled and managed, so as to intelligently handle high temperature and failure analysis. Contents of the invention [0004] Aiming at the above-mentioned deficiencies existing in the prior art, the purpose of the presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P21/14H02P29/60H02P29/028H02P25/022H02H7/08H02H7/085H02H7/09H02H5/04
CPCH02P21/00H02P21/0003H02P21/14H02P21/141H02P29/60H02P29/028H02P25/022H02H7/0805H02H7/0852H02H7/0822H02H7/09H02H5/04H02P2207/05
Inventor 陶涛杨润贤马小燕吕志香花良浩王树梅
Owner YANGZHOU POLYTECHNIC INST
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