一种应用耦合集成磁路的开关变流器优化设计  

Research on a Novel High Performance DC/DC Switching Converter Based on Coupled Inductors and Planar Transformers Technique

作　　者：熊宇[1] 朱光勇 高潮[3] 

机构地区：[1]中山火炬职业技术学院,广东中山528436 [2]奥思康电气工程有限公司,美国田纳西州78682 [3]深圳信息职业技术学院,广东深圳518029

出　　处：《电力电子技术》2010年第8期68-70,共3页Power Electronics

基　　金：中山市科技计划项目(20083A255)~~

摘　　要：为进一步优化开关变流器电路拓扑结构、降低电路成本、降低开关变流器次级电路的输出电流和电压纹波,提出了采用互感电路拓扑结构的开关变流器设计新方法,并针对进一步减小变流器磁性器件体积、重量和损耗的问题研究了集成磁技术,即把开关变流器中所有主要磁性器件在结构上用一个磁性器件来实现,经过优化设计,磁芯中的磁通变化量减小,从而降低磁芯损耗,减小磁芯体积。最后通过实验测试证实了改进后变流器所具有的优点。This paper describes a novel modeling approach for analyzing coupled inductors circuit.A new approach for optimizing analysis and design of converters is presented.The proposed model is easy to use and suitable for analyzing switched-mode power converters utilizing coupled inductors.It successfully and quantitatively reveals how coupling coefficient affects steady state and transient performances.The results from experimental measurement and theoretical calculation show excellent agreement,demonstrating the validity and accuracy of the proposed model.The parasitic effects on planar transformers are studied carefully,and a new method to avoid parasitic oscillations with dangerous high voltage spikes to improve the SMPS performance is established.

关 键 词：开关变流器 互感线圈 优化设计 

分 类 号：TM46[电气工程—电器]