采用磁集成技术的低压大电流DC/DC变换器的仿真

运用回转器一电容模型可以很好的理解磁性器件，特别是复杂的集成磁件。文章运用磁导电容类比建模法建立了磁件的回转器一电容模型。在回转器一电容模型中，磁路由容性电路来模拟，绕组由双端口的回转器来代替。进行了采用磁集成技术的低压大电流DC／DC变换器的仿真。仿真电路拓扑是原边不对称半桥、副边倍流整流电路。磁集成变压器的结构是Wei Chen提出的原边绕于中柱的只在侧柱开气隙的倍流整流磁集成结构。建立了用SPICE语言描述的回转器仿真模型。仿真软件是MULTISIM2001。

Simulation of Low-Voltage High-Current DC/DC Converters with Integrated Magnetics

Gyrator-capacitor model offers a good way of understanding magnetic components,especially complex integrated magnetics .Gyrator-capacitor model of magnetics is built by a permeance-capacitance analogy in this paper. In this approach,magnetic paths are modeled by capacitive circuits and windings are represented by two-ports gyrator. A low voltage high current output DC/DC converter with integrated magnetics is simulated. The topology by simulation is Asymmetrical Half-Bridge Current Doubler Rectifier (AHBCDR),and the configuration of transformer is Current Doubler Rectifier with Integrated Magnetics (CDRIM) with windings in center leg and air gaps in outer legs proposed by Wei Chen. Symbol for simulations of gyrator is built by SPICE languages. And circuits are simulated with MULTISIM2001.