Brushless motor consists of a motor body and a driver, and is a typical electromechanical integrated product. We all know that no matter which type of motor is used for a long time, it will generate heat. Brushless motors are no exception, and the main reasons for their heating are:
1. The motor of the brushless motor is overloaded, so the load current and voltage do not exceed the rated values.
2. The load power factor is too low. Adjust the load to ensure that the excitation current does not exceed the rated value.
3. If the speed is too low, adjust the speed to the rated value.
4. Some windings of the brushless motor are short circuited. Identify the short circuit, correct or replace the coil.
5. The tailwind is blocked, obstacles are cleared, the motor is dismantled, and all air ducts are completely blown out.
When the brushless motor is running under load, there is power loss inside the motor, which will be converted into heat energy, causing the motor temperature to rise and exceed the ambient temperature. The value at which the motor temperature is higher than the ambient temperature is called temperature rise. Once there is a temperature increase, the motor needs to dissipate heat to the surrounding area; When the amount of heat emitted by the motor per unit time is equal to the amount of heat dissipated, the temperature of the motor no longer increases and maintains a stable temperature, that is, in a state of thermal equilibrium.
2024.7.15  ZG