Influence of Stator Yoke Thickness and Stator Teeth Shape upon Ripple and Average Torque of Switched Reluctance Motors

During the investigation of the Switched Reluctance Motor (SRM), we became interested in two apparently secondary parameters which are: - the thickness of the stator yoke; - the shape of stator teeth. In keeping the other geometrical parameters, like the outer and air gap diameters, constant, we could study the impacts from varying these two parameters with respect to: - the curve of instantaneous single-phase torque; - the poly-phase ripple torque at low speed with a current supply mode; - the power semi-conductor rating at maximum power; - and the size power ratio of the converter with a full-wave voltage supply mode. A prototype has been built and enables drawing a comparison between the theoretical and practical results.