Why do DC brushless motors get hot? What are the causes of high temperature?

Many friends in the use of DC brushless motor, the phenomenon of heat, worry about what is wrong with the motor, a moment can not find what the cause, in fact, the motor heat is a normal phenomenon, as long as within a certain control range, are no problem, but more than the control range, you need to find out the cause, in general, DC brushless motor heat, the temperature is too high, the main reasons are as follows.

1, it is possible that the voltage value of the power supply is high, more than ten percent of the rated voltage of DC brushless motor, resulting in the motor has iron loss, high heating phenomenon.

2, not only the high voltage value will heat, if the voltage value in the motor rated voltage of more than five percent, the rated load operation will also appear heating phenomenon, this time you can adjust the transformer tap changer gear to ensure that the voltage is maintained in a stable and normal range.

3, may also three-phase power supply voltage is not stable, the voltage imbalance between phases to five percent or even more, resulting in three-phase current imbalance stability, so that brushless DC motor heating.

4, may be the motor is out of phase operation, the load is large, resulting in heating, you can try to reduce the load, or replace the capacity of suitable brushless DC motor.

5, some friends frequently start the motor, may also lead to motor heating phenomenon, should avoid repeated restart.

6, there may also be a certain failure of the mechanical load, should check whether the mechanical load condition is normal.

DC brushless motor why will be hot? What are the reasons for high temperature? The above has made a simple explanation, I hope that these tips can help you!

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