A Preliminary Design of Hybrid Excitation Flux Switching Generator for Small Scale Applications

Recently, Flux Switching Generator has been widely used due to its ability of having simple constructions yet high output performances. Hybrid Excitation Flux Switching Generator (HEFSG) are one of the sufficient machines that can reduce the armature winding on the excitation part. However, the impact of the HEFSG design parameters on overall electric generator performance cannot be underestimated. This is due to the generator’s output voltage, power, and thus flux distribution is all determined by its appropriate geometries. Consequently, the impact of various design factors, such as rotor span angle, rotor pole width, shaft radius, rotor outer radius, stator inner radius, stator pole width and stator back iron dimension has been observed during the designing process by using 2D-Finite Element Method. The results for the preliminary design of HEFSG has been obtained with an output voltage of 384.87 V with 4.26 Nm of cogging torque. This output performances make the HEFSG suitable to be used for small-scale applications.