Design and Analysis of a Brushless Three Phase Flux Switching Generator for Aircraft Auxiliary Power Unit

摘要

This paper introduces a design of a three-phase flux switching machine (FSM), which is mainly designed for a 400 HZ aircraft auxiliary power unit. In this design, there are two winding sets embedded in the stator slots. One, is referred to as three phase armature windings, supply the power to the aircraft electrical system. The other winding, namely excitation winding, is fed from a de supply. Also, a slotted rotor will be designed without any winding or permanent magnets. Moving the field winding to the stator not only ensures brushless construction, but also reduces generator weight through the direct coupling between the generator and the gas turbine. The machine is initially simulated using 2-D finite element analysis (FEA) and its performance is analyzed. Additionally, a prototype is implemented, and its performance is practically measured in order to prove the validity of the proposed machine for aircraft auxiliary power units.