变压器与电感结合的磁性器件非线性电感模型研究

Research on Magnetic Device Model of Nonlinear Inductance Combined with Transformer and Inductor

提出了变压器与电感结合的磁性器件建模方法。该建模方法能同时反映磁路和电路特性,并且在利用电容反映寄生参数时,模型中各参数物理概念清晰。根据电磁理论利用理想变压器建立了反映磁路与电路的接口模型,并推导获得了反映磁滞效应的非线性电感仿真模型。对实际电感仿真获得的磁滞回线与磁芯手册磁滞回线吻合很好,证明了所提出的磁性器件建模方法的正确性与有效性。使用该建模方法对耦合电感进行建模分析,仿真结果表明该建模方法具有实用性。

A modeling method of magnetic device combining transformer and inductance was put forward. The modeling method reflects characteristics of magnetic and electric circuit simultaneously, and reflects parasitic parameters with capacitance. And the physical concepts of parameters are clear in the model. The interface model reflecting magnetic and electric circuit was established through ideal transformer based on electromagnetic theory, and nonlinear inductance simulation model reflecting hysteresis effect through derivation was obtained. The hysteresis loop of inductance actual simulation and that from magnetic core manual agreed well, proving the correctness and effectiveness. By modeling method in the proposed magnetic device, coupling inductance modeling was analyzed through the method, and the result of simulation shows that the modeling method is practical.