The measurement of permanent magnet synchronous motors generally involves the following aspects: electrical performance testing, mechanical performance testing, thermal management testing, vibration testing, noise testing, etc. In this article, we will provide a detailed introduction to the relevant content and testing methods of these aspects.
1、 Electrical performance testing
1.1 Static parameter testing
Static parameter testing is a basic means of measuring the electrical performance of permanent magnet synchronous motors. This mainly includes testing parameters such as magnetic pole number, stator resistance, stator leakage reactance, stator inductance, excitation current, no-load current, locked rotor current, no-load power, locked rotor power, rated torque, slip, etc. These parameters can be measured using conventional instruments such as multimeter and bridge.
1.2 Dynamic response testing
Dynamic response testing mainly measures the response speed of permanent magnet synchronous motors under different loads, including testing parameters such as start time, acceleration time, deceleration time, and stop time. These parameters can be measured through devices such as data acquisition cards and computers.
2、 Mechanical performance testing
2.1 Axial force test
The axial force of permanent magnet synchronous motors is crucial for their operational stability and lifespan, therefore axial force testing is an important part of mechanical performance testing. This test mainly includes the detection of parameters such as the magnitude, direction, and position of axial force. These parameters can be measured using equipment such as strain gauges and force sensors.
2.2 Wear Test
The wear test of permanent magnet synchronous motors mainly aims to observe whether there is excessive wear on their friction parts. This test requires long-term observation of the operating condition of the permanent magnet synchronous motor and detection using equipment such as a microscope.
3、 Thermal management testing
3.1 Temperature rise test
Temperature rise testing is an important method for evaluating the thermal management capability of permanent magnet synchronous motors. This test mainly measures the temperature rise of a permanent magnet synchronous motor under different loads, in order to evaluate its heat dissipation effect and temperature rise protection effect. These parameters can be measured using devices such as infrared thermal imagers.
3.2 Heat dissipation test
Heat dissipation test is a method for evaluating the heat dissipation effect of permanent magnet synchronous motors. This test is mainly to measure the temperature distribution on the surface of the permanent magnet synchronous motor under different loads, and compare the effects of different heat dissipation methods. These parameters can be measured using devices such as infrared thermal imagers.
4、 Vibration testing
Vibration testing is a method of evaluating the operational stability of permanent magnet synchronous motors. This test mainly measures the vibration generated by the permanent magnet synchronous motor during operation, in order to evaluate its operating quality and lifespan. These parameters can be measured through equipment such as vibration sensors and accelerometers.
5、 Noise testing
Noise testing is a method of evaluating the noise level of permanent magnet synchronous motors. This test mainly measures the noise level and spectral distribution generated by permanent magnet synchronous motors during operation, in order to evaluate their noise level. These parameters can be measured using devices such as sound level meters.
In summary, the measurement of permanent magnet synchronous motors involves multiple aspects, and it is necessary to comprehensively consider the test results of their electrical performance, mechanical performance, thermal management, vibration, noise, and other aspects. Only through comprehensive and accurate testing can the quality of permanent magnet synchronous motors be evaluated and reliable basis be provided for their application.
