Why does the brushless DC motor speed decrease?

A brushless DC motor is a typical mechatronic product, which consists of a motor body and a driver. Motors without brushes and commutators (or slip rings), also known as commutatorless motors, are called brushless motors. As a synchronous motor, the rotational speed of the brushless motor is n=frequency/number of pole pairs*60 (which is consistent with the rotational speed of the rotating magnetic field generated by the stator). So, what determines the speed of a brushless motor? The following Vshida micromotor will share with you.

1. When the motor voltage is constant, variables such as magnetic flux and coil turns have an impact on the speed of the brushless DC motor;

2. The voltage, the structural coefficient of the motor, and the magnetic induction intensity all have an impact on the speed of the brushless DC motor.

3. If it is a brushless motor, such as a stepping motor, its speed is proportional to the error signal recognized by the DC brushless motor;

4. If the brushless DC motor is driven by polyphase pulses, the frequency applied to the coil determines the speed.

5. Point voltage, armature resistance, and primary magnetic flux of air gap are all factors in the calculation formula of brushless DC motor speed;

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