新能源客車EMI防治

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【摘  要】隨著人們對(duì)汽車安全性與可靠性要求的持續(xù)提升，EMI（電磁干擾）問(wèn)題日益受到廣泛關(guān)注。文章通過(guò)介紹電磁兼容基礎(chǔ)，對(duì)比分析電磁干擾中共模干擾與差模干擾的產(chǎn)生機(jī)理及防治方法，并結(jié)合實(shí)際案例，在滿足整車絕緣要求的前提下，對(duì)電驅(qū)動(dòng)系統(tǒng)進(jìn)行整改，以滿足認(rèn)證要求。

【關(guān)鍵詞】EMI；共模干擾；差模干擾；Y電容

中圖分類號(hào)：U469.72     文獻(xiàn)標(biāo)識(shí)碼：A    文章編號(hào)：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(dāng)今汽車朝著電動(dòng)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(wèn)題在汽車研發(fā)的過(guò)程中受到國(guó)內(nèi)外越來(lái)越多的關(guān)注[1-5]。（剩余5128字）