新能源客車EMI防治

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【摘 要】隨著人們對汽車安全性與可靠性要求的持續(xù)提升,EMI(電磁干擾)問題日益受到廣泛關(guān)注。文章通過介紹電磁兼容基礎(chǔ),對比分析電磁干擾中共模干擾與差模干擾的產(chǎn)生機理及防治方法,并結(jié)合實際案例,在滿足整車絕緣要求的前提下,對電驅(qū)動系統(tǒng)進行整改,以滿足認證要求。
【關(guān)鍵詞】EMI;共模干擾;差模干擾;Y電容
中圖分類號:U469.72 文獻標識碼:A 文章編號:1003-8639(2025)01-0019-04
New Energy Bus EMI Prevention
LAI Xingcheng,WANG Jiayu,WANG Hailong,ZHOU Enfei,LI Xun,PAN Lianbo
(Beiqi Foton Motor Co.,Ltd.,Beijing Ouhui Bus Branch,Beijing 102206,China)
【Abstract】With the continuous improvement of vehicle safety and reliability requirements,EMI has been paid more and more attention. This paper introduces the basis of electromagnetic compatibility,compares and analyzes the generation mechanism and prevention methods of common mode interference and differential mode interference in electromagnetic interference,and combined with practical cases,on the premise of meeting the vehicle insulation requirements,the electric drive system is modified to meet the certification requirements.
【Key words】EMI;common mode interference;differential mode interference;Y-capacitance
當今汽車朝著電動化、智能化、網(wǎng)聯(lián)化迅猛發(fā)展,應(yīng)用于汽車中的電子設(shè)備日益增多,電磁兼容EMC問題在汽車研發(fā)的過程中受到國內(nèi)外越來越多的關(guān)注[1-5]。(剩余5128字)