How to judge the quality of DC brushless motors? Remember these common methods

With the rapid development of the motor industry, the application of brushless DC motors is becoming more and more widespread, whether it is a variety of household appliances, or new energy vehicles, models, intelligent office equipment, aerospace, etc., are used in large numbers to brushless DC motors.

DC brushless motors are widely used, but not all quality is good, or in the use of minor problems, so you need to judge the quality of DC brushless motors, so how to judge the quality of DC brushless motors good or bad it?Vacuz give you an introduction!

Common methods to judge the quality of DC brushless motor.

1. Connect the positive and negative poles, there will be a lot of resistance when tightened by hand, indicating that the line is normal, otherwise there will be a break point inside.

2. Rotate the motor by hand. If you feel the resistance is significantly larger, it means that there is a short circuit point inside the motor, and the rotation is smooth and normal.

3. When the temperature rise is stable, stop and measure the winding resistance with a multimeter, generally 0 to a few ohms; the surface temperature of the motor shall not exceed 80 ℃. If more than this value, it indicates that the motor temperature rise can not pass.

4. power on the rotation of the observation of commutation spark, no spark is best, there are stars of the spark for good, spark even into a line for poor, with the phenomenon of ring fire can not be used.

5. Use the rated voltage to measure the rotational speed, and the marked rotational speed error shall not exceed 10%. Rated voltage 2 times, run for 2 minutes, observe whether there are abnormalities.

The above is a common way to judge the quality of DC brushless motor, motor quality is good or bad relationship motor use effect and life, the above knowledge, I hope it will help you.

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