Design Strategy of Traction Induction Motors

In this paper, a strategy for designing induction motors for traction applications is proposed. The proposed strategy builds on the conventional design of induction motors, but makes emphasis on the differentiating characteristics, which are the constant power speed ratio and overloading capability. A design procedure, which breaks up the motor design into different parts and phases was formulated. The formulated design strategy was then validated by the design of a 3kW traction induction motor using the ANSYS Electronics packages. ANSYS RMxprt was used in conjunction with ANSYS Optimetrics optimization module to create an initial optimum design, which was then verified by using ANSYS Maxwell 2D finite element analysis. The proposed design strategy has been shown to work well.