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What are the magnet materials commonly used in permanent magnet motors?
21-05-14

What is the number of motor poles and how to divide the number of poles?

The number of poles in the motor is the number of magnetic poles in each phase of the motor. The number of poles corresponds to the speed of the motor. The 2-pole speed is about 3000 RPM, the 4-pole speed is 1500 RPM, and the 6-pole speed is 750 RPM.
What is the number of poles in a motor
The “pole number” of three-phase asynchronous motor is the number of magnetic poles of the specified sub-magnetic field.Different connection modes of stator windings can form different poles of stator magnetic field.The number of poles selected for the motor is determined by the speed required by the load, and the number of poles directly affects the speed of the motor.
The motor speed is equal to 60f/p which is 60 times the frequency of the motor divided by the log of the poles of the motor.According to the formula, it is not difficult to see that the more series, the lower the speed, the less the number of poles, the higher the speed.
Three – phase AC motor each group of coils will produce N, S magnetic poles, each motor each phase contains the number of magnetic poles is the number of poles.Because the magnetic poles come in pairs, the motor has 2, 4, 6, 8… poles.In China, the power frequency is 50 Hz, the 2-pole synchronous speed is 3000r/min, the 4-pole synchronous speed is 1500r/min, the 6-pole synchronous speed is 1000r/min, and the 8-pole synchronous speed is 750r/min.The winding comes and goes to form a loop, which is the pole number, and it comes in pairs, pole means pole, and these windings generate a magnetic field when they run a current through them, and they have magnetic poles.The electric current of the motor is only related to the voltage and power of the motor.
How is the number of motor poles divided
The two poles are called high speed motor, the four poles are medium speed, the six poles are low speed, and the eight poles are greater than or equal to the eight poles are called super low speed.
Two stages 2800-3000 RPM
Quad 1400-1500 RPM
Level 6:900-1000 RPM
Anything greater than or equal to 8 poles is less than 760 RPM.

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