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Two pairs of magnetic poles are four-level motors. Three pairs of magnetic poles are six-level motors.
l Different speed
The 4-pole synchronous speed is 1500 rpm and the asynchronous speed is about 1450 rpm.
The 6-pole synchronous speed is 1000 rpm, and the asynchronous speed is about 960 rpm.
l Different volume and torque
For motors with the same power and different pole numbers: the more pole pairs, the lower the speed, the larger the volume, but the larger the output torque.
The fewer the number of pole pairs, the higher the speed and the smaller the volume, but the smaller the output torque
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