Brushless dc motor with low noise, high torque features such as widely used conventional cars, new energy vehicles, pure electric vehicles, household appliances, medical equipment, industrial automation equipment, office automation equipment and other industries, because it has different specifications and types, so how to select the brushless dc motor, in order to meet the product performance requirements, it is very important. Under the force of fai motor introduces several choose the principle of brushless dc motor. , specification selection in the case of power supply voltage is adjustable, can choose according to the actual need, rotational speed and torque corresponding rating close to dc motor specifications of products, by changing the voltage to get the required speed; In the power supply voltage is fixed, if there is no available for selection of the appropriate dc brushless motor, can according to the torque first selecting the appropriate specifications, the product of voltage and speed can make appropriate adjustments. , power selection, motor there is a limit to the maximum power output, if the power of brushless dc motor selection is too small, the load exceeds the rated output power of motor overload occurs, motor overload occurs fever, vibration, speed down, abnormal phenomenon such as voice, serious overload, will be burning motor. While power is too big, can cause economic waste. So the selection of motor power is very important. , types, choose appropriate priority to choose high efficiency, cheap price, low temperature of ferrite permanent magnet dc motor. Only when strict in performance, small volume and high ambient temperature when consider to choose aluminum nickel and cobalt permanent magnet dc motor or rare earth permanent magnet dc motor.
