Design Aspects and Performance Evaluation of Pole-Phase Changing Induction Machines

Pole-phase changing induction machines (IMs) offer the capability to extend torque-speed envelope compared their fixed pole-phase counterparts. Dynamic pole-changing can achieve higher torque levels at lower speeds, utilizing pole numbers, and extended flux-weakening range with pole-number operations. This paper investigates design impact on optimum behavior respective split of operating region different Additionally, improvement in terms overall per ampere efficiency is illustrated. For purposes analysis, two IMs wound independently-controlled stator coils (WICSC) original numbers are evaluated an effort quantify extent benefits changing. These geometries correspond that were originally designed 2- 6 magnetic poles, respectively. It shown that, case 2-pole WICSC machine, shifting a number notably beneficial significant part region, whereas 6-pole, both significantly enhance efficiency. The results highlight notable deep insight towards derivation standard guidelines for these machines.