Modeling Torque Characteristics and Maximum Torque Control of a Three-Phase, DC-Excited Flux-Switching Machine

Three-phase, dc-excited flux-switching machines have been widely researched in recent years. They use dc field windings to produce a field that interacts with the flux produced by the armature windings to generate torque. Numerous studies have discussed designing this type of machine; however, only a few studies have investigated controlling their maximum torque. This paper examines the torque characteristics of a three-phase, 24-slot, 14-pole, outer rotor, dc-excited flux-switching machine, and presents a control strategy for achieving maximum torque output. This machine is designed for traction applications. The mathematical model was derived from the finite-element analysis results. In addition to the theoretical analysis, the proposed control strategy was also verified experimentally.