hillma
1 mW
IanFiTheDwarf said:This comes from having nothing for the end magnets to interact with on one side, so all of their field is going in one direction. I presume that as the gap between the magnets decreases they interact more with each other. As you can’t simulate a circle in this plane or an infinite length try adjusting the size of the end magnets until the flux lines from the next magnet split evenly left and right.
Many thanks for that suggestion- I've reduced the width of the outer magnets by half and the flux distribution is now behaving as expected in the attached v4 FEMM
Now all I need to do is sort out this rotor back iron saturation and I should be there!
Cheers
Mark