Modeling and Control of Radial Force due to Electromagnetic Force in IPMSMs

In this paper, various methods to reduce noise and vibration of IPMSMs are introduced, especially focused on radial electromagnetic force fluctuation. Electrical 2nd and 6th order radial force is known to cause serious noise and vibration problem. Firstly the method to reduce radial force by structural designing is introduced. Secondly the modelling and control method for decreasing 2nd and 6th radial force vibration is shown. Finally, general overview is disscussed to realize advanced motor designing and control technology.

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