DC/DC電源變換器電磁兼容性建模與仿真預(yù)測

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中圖分類號：U463.6；TM401 文獻(xiàn)標(biāo)志碼：A DOI：10.20104/j.cnki.1674-6546.20250040

EMCModeling and Simulation Prediction ofDC/DC Converter

KongFanlei，WangLinghui，Cai Minghao，Zhu Zhanshan，Li Min （Global R&D Center， China FAW Corporation Limited， Changchun 130013） 【Abstract]Inorder To evaluate and predictthe Electromagnetic Compatibility（EMC）performance of DC/DCconverterin theearlystageofdesign，themainstreamelectromagneticcompatibility“threeelements”method isfirstused toanalyzethe main interferencesourceandpropagationpathofDC/DCconverter.Secondly，basedonthehigh-frequencyparametereoryof transformer，the parasitic parametertheoryof Printed-Circuit Board（PCB）andthe parameter extraction methodof common mode chokes，the common mode interferenceof transformer，PCB wiring and common mode chokesare analyzed separately. The high-frequencyequivalent modeloftransformerandPCB，experimental environment test benchesand high-voltage filtering modulesareestablishedusing MaxwellHFSS，SIwave，andQ3Dsoftware intheANSYSsimulationplatform.Finally theintegration of each moduleof DC/DC converterandthesimulation analysisof conductionand radiationemission are completed in Simplorersoftware.Theresults indicate thattheconductedandradiated interferenceexceds the standard more severely inthe Metal-Oxide-SemiconductorFieldEffectTransistor（MOSFET）switchingfrequencybandanditsharmonicsof themaininterferencesource.Themodel simulationresultsare basicallyconsistent with theoreticalanalysisandactual experimental results，and the simulation model has high accuracy.

Key words：DC converter，Electromagnetic compatibility，Three-element method， Simulation modeling，Interference analysis

【引用格式】孔繁磊，王玲輝，蔡明浩，等.DC/DC電源變換器電磁兼容性建模與仿真預(yù)測[J].汽車工程師，2025（7）：18- 23+35 ： KONG FL，WANG LH，CAI MH，et al.EMC Modeling and Simulation Predictionof DC/DC Converter[J]. Automotive Engineer，2025（7）： 18-23+35

1前言

DC/DC電源變換器的開關(guān)器件工作在高壓和18汽車工程師

高頻環(huán)境中，在開通和關(guān)斷時(shí)會產(chǎn)生強(qiáng)烈的電磁干擾，影響汽車安全性和可靠性。（剩余8631字）