Design Improvement and Comparison of Hybrid Excitation FSM Using Segmental Rotor

Abstract

In the recent ages, Aircrafts and airplanes are furnished by electrical equipment’s are distinguished as all electric aircraft (AEA). By meant for aerospace thrust method, where, electrical drives deliver higher torque densities, which are foremost for the feasibility of direct-drive electrical impulsion of airplane applications. Due to these reasons, in recent, a new machine has been familiarized in last decade and known as flux switching machine (FSM). FSMs exhibit all flux producing sources on stator side with single piece robust structure of rotor. FSMs are divided in to three categories, which are, 1) permanent magnet PM FSM, 2) field excitation FE FSM and 3) hybrid excitation HE FSM. PMFSM and FEFSM contain PMs and FE coils for their flux producing sources separately, whereas both PMs and FE coils are used in HEFSM for excitation sources. These machines have shown high efficiency and higher torque-to-weight ratios throughout research in the last decade. The challenge of designing a machine appropriate for these application goes beyond the electromagnetic designs and the mechanical designs are much deeper than traditional designs. Hence, in this paper, the design improvement and comparison of topologies of segmented rotor hybrid excitation (HE) FSM are presented for aircraft applications. PMs and field FE coils are used as primary and secondary magnetic flux producing sources on the stator core respectively. Besides, the magnetic performances of various segmented rotor HE-FSMs at different positions of PMs are presented, analyzed and compared based on the 2D finite element analysis (FEA) using JMAG ver.14