A control method for a permanent magnet synchronous motor load simulation system

A permanent magnet synchronous motor and load simulation technology, which is applied in the direction of motor generator testing, etc., can solve problems such as prone to flying, failure to test the dynamic performance of the motor load, and failure to control the speed of the load simulation system of the permanent magnet synchronous motor, so as to avoid flying phenomenon, ease of popularization and use, and effects of improving reliability and stability

Active Publication Date: 2020-10-27
西安立泽电子科技有限公司
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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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  • A control method for a permanent magnet synchronous motor load simulation system
  • A control method for a permanent magnet synchronous motor load simulation system
  • A control method for a permanent magnet synchronous motor load simulation system

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Experimental program
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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 kind 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 permanent magnet synchronous motor load simulation system and a control method thereof. The system includes a load simulation permanent magnet synchronous motor, a load simulation motor drive circuit, and a data acquisition control system; a load simulation permanent magnet synchronous motor and a load simulation motor The output end of the drive circuit is connected, and the output shaft of the motor under test is connected to the output shaft of the load-simulating permanent magnet synchronous motor through a coupling; the data acquisition control system includes a microcontroller, and the input end of the microcontroller is connected with a three-phase current sampling circuit , a three-phase voltage sampling circuit, a speed sensor and a torque sensor, and a load simulation motor drive circuit are connected to the output end of a microcontroller; the control method includes steps: 1. data acquisition and transmission, 2. data preprocessing, 3. adopting The SVPWM direct torque control mode controls the load simulation permanent magnet synchronous motor. The invention can accurately simulate loads under different working conditions, has simple method steps, is convenient to realize, and is convenient to popularize and use.

Description

technical field [0001] The invention belongs to the technical field of motor test systems, and in particular relates to a control method for a permanent magnet synchronous motor load simulation system. 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 operation under di...

Claims

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Application Information

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Patent Type & Authority Patents(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 西安立泽电子科技有限公司
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