Design and analysis of partitioned-stator flux-switching hybrid-excitation machine for hybrid electric vehicles

In this paper, an advanced partitioned-stator flux-switching hybrid-excitation (PS-FSHE) machine, which is highly suitable for the hybrid electric vehicle (HEV), is proposed. By artfully implementing the two excitation sources, namely the high-energy-density permanent-magnet (PM) source and the DC-field excitation source, the hybrid machine can take the benefits from both sides. Unlike the existing PS-FSHE machines that sacrifice the PM materials for DC-field winding accommodation, the proposed machine instead shares the space of the armature winding with the DC-field winding. Hence, comparable power and torque densities can be potentially achieved. To verify the proposed concept and illustrate the merits of the proposed machine, the key machine performances are analysed and compared based on the finite element method (FEM).