How to protect brushless motors

Brushless motors have many advantages and are very popular in the market, but the best product depends on how you use it and how to protect it.

        The brushless DC motor has the advantages of good adjustment and starting performance of the DC motor and simple structure of the asynchronous motor without maintenance. Therefore, it is a highly reliable motor speed control system.

The motor controller is the command center for the normal operation of the brushless DC motor and the realization of various speed-regulating servo functions. It mainly completes the following functions: logically synthesizes various input signals, provides various control signals for the drive circuit: generates PWM pulse width Modulate the signal to realize the speed regulation of the motor: adjust the speed loop and current loop of the motor; make the system have better dynamic and static performance; realize short-circuit protection, over-current protection, under-voltage protection and other fault protection functions.

The controller is the driving system of the electric bicycle. It is the brain of the electric bicycle. Its main function is to improve the efficiency of the motor and the battery, save energy, protect the motor and the battery, and reduce the electric bicycle's The degree of damage when damaged. Brushless DC motors play a key role in electric bicycles. Therefore, to improve the quality and life of electric bicycles, the first point is to start with electric motors. Then the biggest potential danger of electric motors is the two major problems of short circuit and overcurrent. Therefore, to ensure the life and quality of electric bicycles, the brushless DC motor of electric bicycles must be designed for overcurrent protection.

　　 For brushless motor over-current protection, you can use a self-recovery fuse with a price advantage and easy installation to protect the motor from over-current. Self-recovery fuse is used to protect the motor with automatic recovery after protection, easy installation, preferential price and other reasons. Combining various advantages, it is the best choice to use self-recovery fuses to protect the motor.