Take a moment to appreciate a finest machine the legendary Nikola Tesla invented in his early life. The synchronous motor inspite of having very few applications over the years has the most beautiful working.
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You Synchronous motors are not self started motors but they would start like induction motors right. After that we give DC supply in order to achieve synchronous speed. I have studied practically.
@Know Them All Great work brother. I want to convert single phase induction motor to permanent magnet rotor synchronous motor. If the single phase induction motor has 4 poles stator, then how poles should I have in the rotor (I am going to use permanent magnet rotor poles).
First of all, I am sorry for the late reply. The number of stator poles should be equal to the number of rotor poles. So, your synchronous motor's rotor should contain 4 poles. But if you are going to perform this practically, you need to consider starting methods of the new motor.
Bro I have doubt, is this synchronous motor controlled with frequency?, if so we can make the frequency=1, poles = 4, so Ns = 120/4 = 30rpm, so we can give starting rotation with hand rotation and once it reaches Sync speed we can increase the frequency
