PMSM (permanent magnet synchronous motor) load simulation system and control method therefor

A permanent magnet synchronous motor and load simulation technology, applied in the direction of motor generator testing, etc., can solve the problems of prone to flying, not controlling the speed of the permanent magnet synchronous motor load simulation system, unable to test the dynamic performance of the motor load, etc., to avoid flying. phenomenon, easy to popularize and use, and the effect of improving reliability and stability

Active Publication Date: 2018-12-11
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing mechanical, hydraulic and magnetic powder load simulation systems cannot test the load dynamic performance of the motor, while the permanent magnet synchronous motor load simulation system can only accurately simulate the first type of load, and does not control the permanent magnet synchronous motor load simulation system Speed, easy to appear speeding phenomenon

Method used

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  • PMSM (permanent magnet synchronous motor) load simulation system and control method therefor
  • PMSM (permanent magnet synchronous motor) load simulation system and control method therefor
  • PMSM (permanent magnet synchronous motor) load simulation system and control method therefor

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Experimental program
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Effect test

Embodiment 1

[0055] Such as figure 1 As shown, the permanent magnet synchronous motor load simulation system of the present invention is used to provide a load for the tested motor 4, including a load simulation permanent magnet synchronous motor 1 and a load simulation motor drive circuit 2 for driving the load simulation permanent magnet synchronous motor 1 , and a data acquisition control system; the load simulation permanent magnet synchronous motor 1 is connected to the output end of the load simulation motor drive circuit 2, and the output shaft of the measured motor 4 is connected to the load simulation permanent magnet synchronous motor 1 through a shaft coupling The output shaft is connected; the data acquisition control system includes a microcontroller 3-1, and the input terminal of the microcontroller 3-1 is connected with a three-phase current for sampling the three-phase current of the load simulation permanent magnet synchronous motor 1 Sampling circuit 3-2, a three-phase vo...

Embodiment 2

[0060] The load to be simulated in this embodiment is a potential energy load, and this type of load can drive the motor to reverse. In the process of simulating this type of load, when the output torque of the load simulation permanent magnet synchronous motor 1 is greater than the output torque of the tested motor 4, the tested motor 4 can no longer drive the load simulation permanent magnet synchronous motor 1 to rotate, and the load simulates the permanent magnet synchronous The speed of motor 1 gradually decreases until it is 0. At this time, the load simulated permanent magnet synchronous motor 1 starts to drive the motor 4 under test to reverse.

[0061] Such as figure 2 with image 3 As shown, the control method of the permanent magnet synchronous motor load simulation system of the present invention comprises the following steps:

[0062] Step 1, data collection and transmission: the three-phase current sampling circuit 3-2 collects the A-phase current, B-phase cur...

Embodiment 3

[0082] The load to be simulated in this embodiment is a resistive load, and this type of load cannot drive the motor to reverse. In the process of simulating this type of load, when the output torque of the load simulation permanent magnet synchronous motor 1 is greater than the measured motor 4, the load simulation permanent magnet synchronous motor 1 cannot drive the measured motor 4 to reverse. When the load simulates the direction of the rotational speed of the permanent magnet synchronous motor 1 and the torque given value T e * When the directions are the same, the output torque of the load simulated permanent magnet synchronous motor 1 is greater than the output torque of the measured motor 4. It is necessary to adjust the torque to control the load simulated permanent magnet synchronous motor 1 not to drive the measured motor 4 to reverse. Thereby simulating a resistive load.

[0083] Such as figure 2 with Figure 4 As shown, the control method of the permanent ma...

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Abstract

The invention discloses a PMSM (permanent magnet synchronous motor) load simulation system and a control method therefor, and the system comprises a load simulation PMSM, a load simulation motor drivecircuit, and a data collection control system. The load simulation PMSM is connected with the output end of the load simulation motor drive circuit, and the output shaft of a tested motor is connected with the output shaft of the load simulation PMSM through the shaft coupler. The data collection control system includes a microcontroller, and the input end of the microcontroller is connected witha three-phase current sampling circuit, a three-phase voltage sampling circuit, a speed sensor and a torque sensor. The load simulation motor drive circuit is connected with the output end of the microcontroller. The control method includes the steps: 1, data collection and transmission; 2, data preprocessing 3, the control of the load simulation PMSM in an SVPWM direct torque control mode. The system can accurately simulate a load under different working conditions, has simple method steps, is convenient to implement, and is convenient for popularization and use.

Description

technical field [0001] The invention belongs to the technical field of motor testing systems, and in particular relates to a permanent magnet synchronous motor load simulation system and a control method thereof. Background technique [0002] With the continuous advancement of science and technology, the performance requirements of the motor are getting higher and higher. It is not only required to test the no-load dynamic performance of the motor, but more importantly, to test the load dynamic performance of the motor. Therefore, it is necessary to study a load simulation system. In the laboratory Under the environment, simulate the complex and various loads borne by the motor in practical applications. The purpose of the load test is to determine the parameters of the motor such as torque, efficiency, power factor, speed, and stator current, and to test the characteristics of the motor under different load conditions to ensure that the motor can still maintain good operati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/34
CPCG01R31/34
Inventor 周奇勋陶海莉王茜党政刘全龙郭山毛诚畅冲冲卢少亮徐贵超李鹏博刘娜
Owner XIAN UNIV OF SCI & TECH
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