The flux-reversal machine: a new brushless doubly-salient permanent-magnet machine

A new brushless doubly-salient permanent-magnet machine called the flux-reversal machine is described. Design, analysis, construction and experimental results for a prototype machine built as a single-phase, high-speed generator are presented. Qualitative comparisons are made with other types of brushless machines in its class, using the flux-MMF diagram technique. An elementary CAD program developed for designing flux-reversal machines and the associated drive electronics is also described.