The speed of the induction motor or induction motors. will modification with the speed or the equation of synchronous speed (Ns)
Synchronous speed (Ns) = (120 * f ) / P
f = frequency electrical current.
P = number of pole
1. the number of poles (P) and
2. The frequency of electrical equipped to the electric motor (f)
Table summarizes the relationship of the speed of the motor with variety of different polarity can be seen that how to control the speed by changing the amount of magnetic poles. Speed will vary every time so as to change from 3000 rpm to 1500 rpm or 1500 rpm to 3000 rpm (the change of the 2-pole into a 4-pole, or from 4 pole down to 2 pole), which changes the speed in this method, speed changes aren't subtle. , As in the no-load. The key is to use a specially designed motor that may change the amount of magnetic poles solely. It does not suit the requirements of many. sorts who want to regulate the speed of the load to speed with the speed of the production process. the process is usually employed in inverter control motor speed, instead of due to the merger. control the motor speed constant. The speed at completely different speeds, quick and a lot of accurate.
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