What are the important parameters of brushless motors? What do the parameter values represent?

With the continuous development of technology, brushless motor into the era of high-speed development, a variety of brushless motor used in all walks of life, convenient for people’s production life, favored by the majority of customers.

When it comes to brushless DC motors, many friends are confused about what parameters, Vacuz to introduce these parameters, I hope to help you better understand the brushless motor.

1.KV value: this is the parameter that we are more concerned about, many friends who play model airplane know, in fact, it refers to the running speed of brushless motor, the larger the value, the faster the speed of the motor, speed = KV value x working voltage.

2. No-load current: This number is understood, refers to the working current of the motor when it is unloaded at a specific voltage, without any load.

3. resistance: refers to the size of the resistance value between the two phases.

4. Torque: torque is also a relatively important parameter, mainly refers to the brushless motor in operation, driving the load together with the size of the driving torque.

5. slot pole pole number: this is very important, often have friends say: 3N2P, 9N12P, 12N10P, or 9N6P, 12N8P, 18N16P, etc., where N refers to the number of slots, P refers to the number of poles.

For the outer rotor brushless motor has the following points.

1. N must be a multiple of 3, P must be an even number, the magnets exist in pairs.

2. the smaller the value of P, the higher the speed.

3. if N is larger than P, then the relative speed will be higher.

4. the larger the P value, the stronger the torque, given the same N value.

5. N and P values are not divisible.

The above are a few important parameters of brushless DC motors, in learning, must understand these basic parameters, so as to better operate brushless motors.

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