考虑频变特性的共模电感宽频段阻抗建模方法  

Wide-band Impedance Modeling Method for Common-mode Inductor Considering Frequency-dependent Characteristics

作　　者：连振珠 傅恺宁 陈为[3] LIAN Zhenzhu;FU Kaining;CHEN Wei(School of Electrical Engineering and Automation,Xiamen University of Technology,Xiamen 361024,China;Xiamen Key Laboratory of High-end Power Equipment and Intelligent Control,Xiamen 361024,China;College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350108,China)

机构地区：[1]厦门理工学院电气工程与自动化学院,厦门361024 [2]厦门市高端电力装备及智能控制重点实验室,厦门361024 [3]福州大学电气工程与自动化学院,福州350108

出　　处：《电源学报》2024年第5期28-36,共9页Journal of Power Supply

基　　金：国家自然科学基金资助项目(51777036);厦门市自然科学基金资助项目(3502Z202372043)。

摘　　要：共模电感由绕组和磁芯组成,锰锌铁氧体可以作为共模电感的磁芯,其高频参数的频变特性使共模电感的阻抗特性在150 kHz~30 MHz内呈非线性。针对传统共模电感集总电路模型与实测阻抗特性存在较大偏差,难以准确预测共模电感在高频段阻抗特性的问题,分析磁芯材料参数与绕组绕制方式对共模电感高频阻抗特性的影响;从共模电感分布电容特性的角度阐述磁性材料参数与绕组结构对分布电容大小的作用机理;提出考虑磁芯相关频变参数的共模电感宽频段阻抗仿真建模方法,结合阻抗测试验证所提方法的有效性。The common-mode(CM)inductor is composed of windings and a magnetic core.Mn-Zn ferrite can be used as the magnetic core of CM inductor,and the frequency-dependent characteristics of its high-frequency parameters make the CM inductor exhibit non-linearity within a range of 150 kHz-30 MHz.It is difficult to accurately predict the impedance characteristics of the CM inductor in a high-frequency band due to the large deviation between the traditional lumped circuit model of CM inductor and the measured impedance characteristics.The effects of material parameters of the magnetic core and the winding scheme on the high-frequency impedance characteristics of CM inductor are analyzed,and the mechanism of magnetic material parameters and the winding structure affecting the distributed capacitance is described from the perspective of the distributed capacitance characteristics of CM inductor.A wide-band impedance simulation modeling method for CM inductor with the consideration of related frequency-dependent parameters of magnetic core was proposed,and its validity was verified by combining with the impedance test result.

关 键 词：共模电感 分布电容 阻抗特性 仿真建模 

分 类 号：TM552[电气工程—电器]