Good design practices in permanent magnets motors

[MasterPipon]

I want to analyze in ANSOFT Maxwell® several topologies for a linear motor using permanent magnets. I am a mechanical engineer and I am looking for a good reference regarding good design practices. Specifically, I want to know if a motor with coils and permanent magnets in the stator is something that can work or, at the other hand, somebody has discovered that this idea does not work at all.

 

[sreid]

I can recommend several books but first, with windings and magnets in the stator, what moves?

 

[MasterPipon]

Both are static. The rotor has windings too.

 

[sreid]

The only time I have seen windinds in the stator is to use the windings to "Buck" and reduce the Field Strength from the permanent magnets. The purpose is to reduce the Voltage Constant [BEMF constant, Kv]to allow higher speed during fast point to point moves. With no current to the stator windings, the Force Constant, Kf, would remain high.

But the electronic [Zero Cost] way to do the same thing is to shift the phase of the drive currents. A two to one speed increase can be easilly accomplished.