Reasons for the burnout of brushless motors

Rotor and controller mismatch: The rotor and controller of a brushless motor need to be matched to ensure normal operation. If not matched, it may cause overload and short circuit, thereby burning out the motor.

Overload: If the brushless motor suddenly encounters excessive load during operation, it will also burn out. This may be due to changes in the external environment or defects in mechanical design.

Voltage too high or too low: Both high and low voltages can cause damage to brushless motors. Excessive voltage can increase the load on the motor, while insufficient voltage may cause the motor to malfunction.

Overtemperature: Brushless motors generate heat during operation. If the heat is not dissipated in a timely manner and the temperature rises to a certain value, it may burn out the motor.

Motor winding short circuit: This is caused by damage to the insulation layer of the motor coil or loose coil joints, which can lead to excessive current, an increase in internal temperature of the motor, and ultimately cause the motor to burn out.

Driver malfunction: The brushless motor driver is responsible for converting electrical control signals into power supply voltage and current. If a malfunction occurs, it can cause the motor to malfunction, leading to burnout.

Overloading: When the load is too heavy, the electronic governor will output a larger current to maintain the speed. Excessive current can cause the motor to overheat or even burn out.

Improper handling: Improper handling during the use and installation of brushless motors may cause motor overload or short circuit, which can also lead to motor burnout.

Unstable driving voltage: Brushless motors have high requirements for driving voltage. If the driving voltage is unstable, problems such as motor overload and high voltage may occur, leading to motor burnout.

Circuit damage: The internal circuit of the brushless motor includes multiple components such as the drive board, Hall sensor, and motor. Any component damage may affect the normal operation of the circuit, leading to motor burnout.