ABSTRACT
Switched reluctance machines (SRMs) have salient stator and rotor poles with concentrated windings on the stator and no winding on the rotor. The stator windings can be wound externally and then slid onto the stator poles. This provides for a very simple manufacturing process, thus the cost of the machine is also low. The SRM has a single rotor construction, essentially made of stacks of iron, and does not carry any coils or magnets. This feature gives it a rugged structure and provides themachine with the advantage that it can be used at high speeds and better withstand high temperatures. The SRMachieves high torque levels at low peak currents by using small air gaps. Figures 9.1 and 9.2 show a cross-sectional views of a typical 6/4 SRM with six stator and four rotor poles.
