Structural and assembly design of outer-rotor hybrid excitation flux switching motor based on finite element analysis approach

Research and development on flux switching machines (FSMs) getting popular due to their several definite advantages of high torque and power densities, constant power over a wide speed range, higher efficiency and robust rotor structure inherits combined advantages of permanent magnet synchronous motor (PMSM) and switched-reluctance motor (SRM). There are many developed and novel design of FSMs for various application ranging from domestic appliances till to heavy applications such as for electric traction and aerospace industry. Nonetheless, most of researches have been reported are described on inner-rotor configuration and only few on outer-rotor configuration. This paper presents a structural and assembly design of outer-rotor hybrid excitation flux switching motor (OR-HEFSM) for a direct driven application. Initially, the proposed three-phase 12Slot-14Pole OR-HEFSM configuration is discussed in detail. Furthermore, related parameters and operating principle are also examined via two dimensional (2D) finite element analysis (FEA) implemented using JAMG-Designer software. Then, a 3D structure of the proposed motor is developed using SolidWorks computational software to validate the configuration and confirmed the final design parameters to be proceed for prototype development. Based on both design analysis approach, the proposed motors operating principle with final design parameters generate maximum torque, power and speed of 21.6Nm, 4.6kW and 8500 rpm, respectively.