Hub motor magnet is a key component in hub motor, they are used to generate magnetic field, drive motor rotation. Hub motor magnets are usually made of permanent magnetic system, which can be hard ferrite, NdFeb and other materials.
The magnetic field generation mode of hub motor magnet is divided into two kinds, one is built-in magnet, the other is external magnet.
Built-in magnets are magnets embedded directly into the surface or inside of the rotor of a hub motor, usually used in low-power hub motors. External magnet refers to the magnet installed on the outside of the hub motor rotor, through the circuit to control the direction and size of the current, control the generation and size of the magnetic field, so as to drive the motor rotation.
The material selection and manufacturing process of hub motor magnet have important influence on the performance and life of hub motor. At the same time, because the hub motor magnet has a certain magnetism, it is necessary to pay attention to anti-magnetic interference, to avoid the impact on other electronic equipment.
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