Setting boundary condition for transient modulation of a sector of electrical machine

Hi all,

I was able to solve a sector of electric machine in static condition. (Full machine is 8 pole I want to solve it for 2 pole) However in transient simulation ( I mean moving rotor). The field i am seeing does not make sense and I am sure I am making a mistake in setting up the boundary conditions properly. If you can help.

The bounday conditions I have:
1. Sector symmetry (between the edge boundaries)
2. Continuity in the boundary (using identity pair, between the contacts of stator and rotor)

I am using rotating machinery magnetic module. I was looking into a book Multiphysics Modeling Using COMSOL: A First Principles Approach by Roger W. Pryor. However I could not find a solution from the worked out example, 2D AC Generator: Sector—Static and Transient but I guess that one was for older version and its very difficult for me to fit all the steps in 4.2a.

Do I need to give any additional point boundary condition? I have kept Identity pairs referance frame as spatial (both source and destination)

Thanks for your help. I have attached a video of the field distribution.

Arijit