Loss reduction of a canned switched reluctance machine

The loss from cans is the main problem for canned machines especially at high speed. In this paper, different strategies are used to reduce can loss of a canned switched reluctance machine (SRM). Based on an ordinary SRM, the improvements includes investigating the rate of change of phase current, axial separation of the machine, and using longer cans. The torque and loss curves are used to judge the effects. Simulation shows that can loss is greatly reduced while the active torque is maintained, which makes operation of such canned machine feasible.