Research on a 4-phase wound-field doubly salient generator with compensation capacitors

A 4-phase wound-field doubly salient generator is researched in this paper. The no-load situation is analyzed ideally and simulated by finite element method. The average inductance of the phase winding, which reaches over 50mH, causes low power factor and decreases the output power. To improve the output power, the capacitors are introduced to compensate the inductive current. For the no-load situation, the capacitors make the phase current has same phase as the flux, and then increase the electromotive force. Compared to the topology with no compensation, the improvement of the output power with the compensation capacitors has been verified by the experiments.