Design and Improvement of 12S-14P Hybrid Excitation Flux Switching Machine with Field Excitation Coil in Radial Direction

Abstract

This paper presents a new design modification of Hybrid Excitation Flux Switching Machine (HEFSM) in which the initial Field Excitation Coil (FEC) in theta direction is replaced with FEC in radial direction. Obviously, the new design has advantages of preventing flux cancellation between FEC and armature coil windings. With similar design restrictions and specifications of existing electric motor used in traction drive applications, initial performances of the proposed HEFSM are evaluated based on 2D-FEA. Design modification by using deterministic optimization approach is conducted in effort to achieve the optimum performances. After several cycles of iteration, the improved HEFSM with FEC in radial direction has achieved torque and power of 304.8Nm and 130kW, respectively.