基于两相磁性材料具有直流偏磁补偿功能的新型电力变压器

new scheme of compensating DC bias phenomenon of the power transformer based on two-phase magnetic material was proposed in this paper. Firstly, a two-phase magnetic hysteresis mathematical model was established based on the Preisach theory and the correspondence relationship between the coercivity and remanence of the two-phase magnetic material were determined, and then the preparation technology of this material was proposed. Secondly, the structural and the electromagnetic design of the novel power transformer were carried out based on the reluctance theory. The DC magnetic potential and the AC magnetic potential were considered respectively in this design. Based on these, Two prototype of the novel power transformer were manufactured. Finally, the simulation and experimental results show that the compensation effect on DC bias is evidently. The results also verify the correctness and feasibility of the scheme.