How to reduce the no-load torque of brushless motor?

The no-load torque of a brushless motor is determined by the various no-load losses of the motor. A large no-load torque results in a large no-load loss of the motor, which will affect the extreme efficiency of the motor and the location of the extreme efficiency point, as well as the width of the efficiency platform of the motor at a certain efficiency point. So what are the ways to reduce the no-load torque of brushless motors? Let's introduce it to you today

1. Reduce the iron consumption of the motor rotor or brushless motor stator, and improve the material grade of the punching plate.

2. reduce the wind friction loss of the motor rotor, rotor surface roughness requirements grade increase. The use of magnetic mud slot wedge filling the stator slot, the use of slender rotor.

3. The correct choice of bearings, should not use more than the requirements of the large bearings, strict control of bearing slide processing requirements, reasonable choice of bearing ball and slide clearance between, reasonable choice of bearing grease.

The above is the method to reduce the no-load torque of brushless motor, more related information, please feel free to consult Vshida micro-motor