I Think he is generalizing , as i am, the only twist here is comparing spm 68kv non fluxed to ipm 41kv ipm fluxed . at same speed.tecnologic said:Ah ok there is a missunderstanding. What we were talking about getting efficiency in terms of using all available Torque. Liveforphsics is refering an operating point past the torque optimum and there the ipm torque is decreasing faster with with increasing FW.
So ill summarize my thoughts as of now given the information as i understand it ......I wasnt going to consider a low 41kv motor but as we agreed earlier even though the ipm is fluxed past its base speed it would have close or the same efficiency and the free lunch around 30% reluctance torque. , the nice part is that torque can be from 0-rpm if Set with a constant id FW all over the operatimg range.
Correct me if that doesnt sound right