Selection method of brushless DC motor.
Compared to the commonly used brushed motors in the past, brushless motors have longer lifespan, lower noise, and greater torque, with more obvious advantages. Brushed motors are gradually being phased out by brushless motors, which are widely used in industries such as AI intelligence, automotive, medical equipment, and industrial automation.
Because the specifications and types of
brushless DC motors vary, it is crucial to choose a motor that meets the performance requirements of the product. How to choose specifically? Here are several selection methods and principles for choosing brushless motors:
1. Specification selection
When the power supply voltage is adjustable, the brushless DC motor specifications with torque and speed close to the corresponding rated values of the product can be selected according to actual needs, and the required speed can be obtained by changing the voltage. In the case of a fixed power supply voltage, if there is no suitable brushless DC motor to choose from, the appropriate specifications can be selected based on the torque, and the voltage and speed of the product can be adjusted appropriately.
2. Power supply selection
The output power of the motor is limited. If the power selection of the brushless motor is too small and the load exceeds the rated output power, it will cause motor overload, motor heating, vibration, speed drop, abnormal noise, etc. If severely overloaded, the motor will burn out. If the power is too high, it will cause economic waste. Therefore, it is important to choose the power of the motor reasonably.
3. Type selection
Choose a high-efficiency, low-cost, and low temperature rise ferrite permanent magnet brushless DC motor. Only when the performance requirements are strict, the volume is small, and the ambient temperature is high, can aluminum nickel cobalt permanent magnet brushless DC motor or rare earth permanent magnet brushless DC motor be considered for selection.
The above are the common selection methods and principles for brushless DC motors. After fully understanding the brushless motor, decide which brushless motor to choose based on your production requirements, so as to ensure smooth production!
