How to calculate the power of a brushless motor?

How to calculate the power of a brushless motor? Topband Motor Factory teaches you.

Brushless motors are widely used in the field of automation equipment due to their advantages such as small size, light weight, portable power supply, low voltage use, low noise, and long service life. However, for many customers who are new to brushless motors, they often do not know how to calculate the power of the brushless motor when selecting, so they do not know what power of brushless motor they need. The manufacturer of Tengchi brand brushless motors is here to teach you how to calculate the power of brushless motors.

Once you understand the parameter values related to brushless motors, you won't feel that they are complicated. Regarding the power calculation of brushless motors, there are formulas to follow. Whether it is a brushless motor or other types of motors, the parameters that must be involved in any motor include power, speed, torque, and if equipped with a reducer, the reduction ratio also needs to be considered. The required parameters can be calculated based on the values of motor power, torque, and speed using a formula, such as power * 9.8NM/speed=torque, and vice versa, torque * speed/9.8=motor power.

Compared to other types of motors, the advantage of using brushless motors is their diversity and flexibility. For example, the classic three-phase asynchronous motor has different numbers of poles, and the speed corresponding to different numbers of poles is rated, such as 2850 rpm for 2-pole and 1450 rpm for 4-pole. However, the speed of brushless motors can be customized, ranging from a minimum speed of 1500 rpm to a maximum speed of 8000-10000 rpm. However, it should be noted that if the motor speed changes, the motor power or torque calculated according to the calculation formula will also change. Due to its direct current type, it can be connected to a portable power supply or connected to a PLC or 248 communication protocol. Remote connection enables IoT based control, which is very suitable for the current direction of technological and advanced development in society.