Design of SRM
Performance analysis of the switched reluctance machine (SRM) requires the dimensions for stator and rotor laminations, winding details, pole numbers, and pole arcs. This chapter describes the resulting machine dimensions form the starting point in design evaluation, and final design is achieved through an iterative process of steady-state performance calculations. It analyses the derivation of the output equation and selection of various machine variables such as number of poles, rotor and stator pole arcs, core length, bore diameter, back iron thickness, number of turns in each phase, and air gap for rotary switched reluctance machines. The chapter explains the knowledge base of the rotary SRM; the linear machine design is achieved using the rotary SRM design process. The design verification process, very much similar to that for the rotary SRM, includes analytical and finite element analyses and experimental verification of the machine.