The principle of choosing DC motor

Update:18 Jan 2021
Summary:

DC motors have different specifications and types in di […]

DC motors have different specifications and types in different industries, so how to choose the right product is very important. Only a reasonable choice can make it more effective. Therefore, several selection principles need to be understood by users.

1. Specification selection

In the occasions where the power supply voltage is adjustable, the DC motor specifications whose torque and speed are close to the product's corresponding rated value can be selected according to actual needs, and the required speed can be obtained by changing the voltage; in the case where the power supply voltage is fixed, if there is no product of the appropriate specification When it is available, you can select the appropriate specifications according to the torque first, and the voltage and speed of the product can be adjusted appropriately.

2. Reasonably choose the power of the motor

The maximum power output of the motor is limited. If the power of the motor is selected too small, the load will exceed the rated output power of the motor, and the motor will be overloaded. When overloaded, the motor will generate heat, vibration, speed drop, and abnormal sound. When overloaded, the motor will be burnt. If the power is too large, it will cause economic waste. Therefore, it is very important to choose the power of the motor reasonably.

3. Type selection

The ferrite permanent magnet DC motor with high efficiency, low price and low temperature rise should be preferred. Only when the performance requirements are strict, the volume is small, and the ambient temperature is high, the selection of AlNiCo permanent magnet DC motors or rare earth permanent magnet DC motors is considered.

Various DC motor products of different specifications have different characteristics and advantages in use, so we must master the principles and methods of selection so that the products can be used reasonably and the benefits can be maximized.

https://www.limingmotor.com/

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