What is the difference between the inner and outer rotor of a brushless motor? In what ways?

Many friends are more curious about the inner rotor and outer rotor of the motor, but they do not understand the difference between the two, such as the difference between the structure and function of the two, etc. So what is the difference between the inner rotor and the outer rotor and different? Vacuz give you an introduction to it!

1. Structural differences: the inner rotor of a brushless motor is generally a rotating shaft, which has a magnet or permanent magnet; the outer rotor of a brushless motor is a ring rotating around the rotor, and there is a magnet or permanent magnet outside.

2. Different operation modes: the inner rotor is generally fixed, the outer rotor rotates around the inner rotor, this movement makes the outer rotor driven by the inner rotor, so that the motor and run up.

3. Different control methods: Brushless motors commonly used control methods, mainly through the current control of the electronic controller to realize. For internal rotor brushless motor, the position of rotor is detected by detecting the position of magnet or permanent magnet above the internal rotor, while for external rotor brushless motor, the position is detected by detecting the position of magnet or permanent magnet above the external rotor, which are all realized by the position of permanent magnet.

4. Different application scenarios: Inner rotor brushless motors are commonly used in DC brushless motors, power tools, etc., which often require high-speed operation and low-power applications; while outer rotor brushless motors are suitable for occasions that require large torque and low-speed operation, such as electric vehicles and robots.

What is the difference between inner rotor and outer rotor of brushless motor? Mainly in the structure, operation mode, control methods, application scenarios, etc., to understand these basic knowledge, in order to better understand the brushless motor inner rotor and outer rotor! Vacuz hope that this knowledge can help you!

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