Research of a Novel Multidisk Axial Flux Compensated Pulsed Alternator

In this paper, a novel multidisk axial flux compensated pulsed alternator (MAFCPA), excited by permanent magnet (PM), is proposed and investigated in aspects of operational principle and pulsed performance. The design purpose of MAFCPA mainly focuses on reducing the subtransient reactance while discharging, which contributes to increasing discharging power. In detail, the compensated shield made of aluminum alloy can decouple the mutual-inductance among windings in different disks. By connecting the windings with little mutual-inductance in parallel, the purpose of reducing the subtransient reactance is achieved. Besides, to some extent, the shield helps protecting the PM as well. Both functions above are proved in analytical equations and equivalent models. Based on the equations and the models, a 0.6-MW MAFCPA in finite element analysis (FEA) is built and simulated. It appears to be a feasible scheme for pulsed alternator.