台阶气隙对电感非线性特性影响分析  

Analysis of Effect of Ladder Gap on Nonlinear Characteristics of Inductors

作　　者：杨超余[1] 陈为[1] 

机构地区：[1]福州大学电气工程与自动化学院,福建福州350108

出　　处：《电源学报》2012年第4期39-43,共5页Journal of Power Supply

基　　金：福建省自然科学基金资助项目(2009J01242)

摘　　要：台阶气隙结构有助于提高功率滤波电感的初始电感量,从而调整功率电感的非线性特性,提高开关电源轻载特性。通过电磁场有限元分析对此进行了深入研究,从磁通分布角度深入研究了台阶气隙对非线性特性控制的作用机理及影响,为设计电感量能随指定负载而变化的台阶气隙电感提供设计指导。Ladder gap is helpful to improve the initial inductance of power filtering inductors and adjust the nonlinear characteristics of the power inductors, which was studied by FEA. The control mechanism and the influence of nonlinear characteristics from ladder gap in the magnetic flux distribution were given, which could offer some guidance to design the ladder gap inductors which could change inductance with the load.

关 键 词：台阶气隙 非线性电感 有限元分析 功率变换器 

分 类 号：TM55[电气工程—电器]