查詢結果分析
來源資料
頁籤選單縮合
題名 | 交換式電源供應器(SMPS)之電磁干擾(EMI)研究=A Study on Electromagnetic Interference (EMI) Caused by Switching Mode Power Supply (SMPS) |
---|---|
作者姓名(中文) | 呂光欽; | 書刊名 | 電信研究 |
卷期 | 28:2 1998.04[民87.04] |
頁次 | 頁277-291 |
分類號 | 448.5 |
關鍵詞 | 電磁干擾; 交換式電源供應器; 共模式; 差模式; 線阻抗安定化網路; Electromagnetic interference; EMI; Switching mode power supply; SMPS; Common mode; CM; Differential mode; DM; Line impedance stabilization network; LISN; |
語文 | 中文(Chinese) |
中文摘要 | 交換式電源供應器(Switching Mode Power Supply, SMPS)較傳統線性電源供應器 具有高效率、 重量輕、 體積小之優點。 但是其同時亦造成嚴重的電磁干擾 (Electromagnetic Interference, EMI) 問題。EMI 可能干擾到 AM,FM ,也視廣播與通信 系統。 因此小心處理 EMI 問題才是成功的 SMPS 產品。EMI 是由電子設備散發出帶有能量 之無線電波;以傳導或輻射的方式散發。 欲解決 EMI 問題必須同時了解干擾源與控制技術 。 一般設計者與使用者利用各種方法克服 EMI 問題;通常包含有短的電流迴路佈線、電磁 遮蔽與濾波器的使用。 EMI 濾波器之設計為 SMPS 開發之重要課題,因為適當的 EMI 濾波 器設計可使傳導及輻射干擾降至可接受的程度。本文主要針對單相 110 ╱ 220 伏交流電源 系統上使用之 SMPS,對於經由傳導方式傳遞的差模 (Differential Mode,DM) 雜訊與共模 (Common Mode, CM) 雜訊之 LC 濾波器將明確說明與分析。 在學習了如何設計 SMPS 用之 EMI 濾波器後,其它的電子設備方可利用類似之方法降低 EMI 對電子系統的影響。 |
英文摘要 | Switching mode power supplies (SMPS) have many advantages over traditional linear approaches including high efficiency, low weight and small size; but every SMPS produces serious EMI problem which can disturb AM, FM, TV broadcast, and telecommunications as well. However, a successful implementation of SMPS requires careful attention to the area of EMI. EMI refers to radio frequency energy conducted or radiated from electronic equipment. To overcome EMI problem, we must understand the specific interfe rence sourcesand control techniques. In general, designers of SMPS apply a variety of means to cure the problem, including low loop area wiring layout and interconnections, shielding, and use of filters. The design of EMI filter is an importantpart of SMPS development. By properly designed EMI filters, it will allow both conducted and radiated emissions to be reduced to an acceptable level. In this report, we will discuss the causes of EMI emitted from SMPS and the design rules of EMI filters. Finally, some ot her concerned issues will be also addressed. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。