多相并联磁集成电压调整模块的电路建模研究

针对磁集成磁路耦合和建模分析的难点,提出了一种基于回转器-电容模型的磁集成建模方法。在该模型中,磁性参数中的磁导类比于电路中的电容,绕组励磁类比于电流控制电压源型回转器。文章首先利用回转器-电容模型对两相电压调整模块进行建模研究,并推导出具体的磁集成自感和互感表达式;然后根据该建模方法推导出多相并联磁集成的电路模型,并利用相似矩阵对角化原理求解得到通用模型表达式;文章最后比较了利用回转器-电容模型的磁集成电压调整模块的仿真与实验结果。研究表明,该模型与实际应用相吻合,能仿真磁集成电路的稳态和动态特性,为磁集成建模提供了一个新的研究思路。

Research of Circuit Modeling of Multiphase Parallel Voltage Regulator Module With Integrating Magnetics

Regarding to the difficult analysis of coupled flux and magnetic modeling,a novel circuit model of integrating magnetics is proposed using Gyrator-Capacitor approach.In this model,the magnetic circuit is converted to a pure electric circuit with capacitor;magnetizing winding is replaced by a pair of current controlled voltage sources,namely a Gyrator.The Gyrator-Capacitor model is first introduced to modeling two-phase integrating magnetics Voltage Regulator Module(VRM),which can deduce the corresponding self-inductance and mutual inductance.Then multiphase integrating magnetics model is also studied based on the Gyrator-Capacitor model,and universal model equation is gotten by matrix analogical theory.Finally,the simulations of integrating magenetics VRM are given by using the proposed model,which is accordant to the results of the experimental prototype.The research results show that this proposed model can be used to simulate both steady state and dynamic state of integrating magnetic circuit.Thus it presents a novel method to modeling integrating magnetics.