With the rapid development of the motor industry, the application of brushless DC motors, gradually penetrate into all walks of life, it is one of the important components of modern industrial equipment, automotive, aviation, medical and other industries, full of development potential.

statore e rotore

Brushless DC motor body mainly consists of stator and rotor, the two complement each other, is the key components of motor operation, so many friends ask? What is the stator and what is the rotor? What is the composition and characteristics of the structure?

Brushless DC motor stator.

The stator is the stationary part of the brushless DC motor, consisting of the core, armature winding and frame. Generally, in order to reduce the stator iron loss, the core is often made of laminated silicon steel sheet, which is made into a ring-shaped punch with tooth slots and surface insulation treatment to reduce eddy current loss. The selection of the number of slots requires comprehensive consideration of the number of pole pairs of permanent magnets and the number of phases of the control circuit.

After the stator winding is connected to the power supply, the current flowing into the winding will generate a corresponding magnetic field, which then interacts with the rotor permanent magnet to produce electromagnetic torque. When the DC brushless motor is under load operation, a certain amount of counter-electromotive force is generated in the winding. The motor consumes a certain amount of electrical energy and outputs mechanical energy throughout the process, converting electrical energy into mechanical energy.

Brushless DC motor rotor.

The rotor is the rotating part of the motor, which generates the main magnetic field and usually consists of permanent magnets, magnetic conductors and supporting parts.

The permanent magnet and the magnetic conductor are the core of the magnetic field, the permanent magnet material used to be Alnico and ferrite, but now the rare earth permanent magnet material is used. Mainly divided into rare earth cobalt and neodymium iron boron, with high remanence, high magnetic energy product and other characteristics, neodymium iron boron magnetic better, the price is relatively cheaper.

Avvolgimento della bobina

These are the stator and rotor structural components and characteristics of brushless DC motors, both of which are important and interact with each other to make brushless motors run stably.

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