People who understand brushless motor know that brushless motor has many parameters, KV value is one of them. Today, Vacuz introduces you the meaning of KV value of brushless motor and related knowledge, hope it will be helpful to you!

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KV value should be determined with specific application requirements, not the higher the better.KV value is a unique performance parameter of brushless motor and is an important data to judge the performance characteristics of brushless motor.KV value is used to measure motor speed to voltage.

Generally, KV value is commonly used in model aircraft motors. KV value is defined as speed/V, which means that the input voltage increases by 1 volt and the brushless motor idling speed increases. Therefore, the voltage output of a brushless motor and motor slip torque follow a strict linear proportional relationship. In general, the higher the value, the faster the voltage and torque drop. The higher the KV value of the motor, the higher the peak current. The proper KV can be equipped with the proper propeller and the proper torque.

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For the same series and same size of brushless motor, the KV value of brushless motor can also distinguish the characteristics of the motor. For example, if the KV value of brushless motor is 1860 and 2075, then the former will have more torque and relatively less current; the latter has higher speed, but the torque characteristics are worse than the former and the peak current will be higher.

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