comparison of conventional salient-pole synchronous generators and permanent-magnet-assisted salient-pole synchronous generators based on finite element analysis

this paper presents a novel salient pole synchronous generator i.e. permanentmagnet-assisted salient-pole synchronous generator (pma-sgs). due to saturationof conventional synchronous generators (sgs), permanent-magnet-assisted salientpolesynchronous generators (pma-sgs) are presented. pma-sgs are a new type ofsalient-pole synchronous machines with extra permanent magnets (pms) betweenthe adjacent pole shoes. placing pms between adjacent pole shoes leads to areduction in flux saturation plus an increase in armature flux linkage. in otherwords, the generator can operate at higher capacity. in this paper, a comparativestudy is carried out between conventional sgs and pma-sgs based on finite elementanalysis (fea). this is done via simulation of a pma-sg compared to aconventional sg. simulation results show superiority of pma-sgs over sgs. in fact,in pma-sg maximum flux density in stator core is increased and pole bodies are notsaturated. besides, pma-sg has higher flux linkage compared to conventional sg.therefore, higher voltage could be produced in the generator. in other words, theoutput performance of the pma-sg is considerably better than that of aconventional sg.