【正文】 hods are explored,including average control, peak current control,hysteretic control,etc. The development for power factor correction both here and abroad in recent years is summarized and the good and bad characteristics for reactive and active power factor correction is analyzed briefly and the basic principle and control methods of active power factor correction is analyzed detailed after read a mass of literatures both here and main BOOST converter and UC3854 controller is designed and elements of main and control circuit. The power factor of circuit is improved obviously and satisfied design require after power factor correction and the total harmonic distortion for current is controlled in a band,so the harmonic for voltage and current is cicuit was simulated based on MATLAB according to these parameters and correctness of the design is proved firstly after used pare simulation waves. Keywords PFC（ power factor correction） BOOST converter Average current control Simulation III 目 錄 摘要 ....................................................................................................................... I Abstract ................................................................................................................ II 第 1 章 緒論 ........................................................................................................ 1 課題背景 .............................................................................................. 1 諧波電流對電網(wǎng)的危害 ....................................................................... 2 研究的主要內(nèi)容 .................................................................................. 3 第 2 章 功率因數(shù)校正 ........................................................................................ 4 功率因數(shù) .............................................................................................. 4 功率因數(shù)的定義 .......................................................................... 4 功率因數(shù)校正的基本原理 ........................................................... 6 功率因數(shù)校正的一般方法 ................................................................... 7 無 源功率因數(shù)校正 ....................................................................... 7 有源功率因數(shù)校正 ....................................................................... 8 功率因數(shù)校正技術(shù)的發(fā)展趨勢 ......................................................... 10 APFC 控制電路硬件的發(fā)展 趨勢 ............................................... 10 兩級 PFC 技術(shù)的現(xiàn)狀和發(fā)展趨勢 ..............................................11 單級 PFC 技術(shù)的現(xiàn)狀和發(fā)展 ......................................................11 三相 PFC 技術(shù)的發(fā)展 ................................................................. 12 本章小結(jié) ............................................................................................. 12 第 3 章 單項功率因數(shù)校正技術(shù) ...................................................................... 13 PFC 電路的構(gòu)成及特點 ......................................................... 13 型 PFC 電路的構(gòu)成 ........................................................... 13 Boost 型 PFC 的特點 ................................................................. 14 BOOST型有源功率因數(shù)校正的控制方法 ........................................... 15 電流峰值控制法 ......................................................................... 15 平均電流控制法 ......................................................................... 17 滯環(huán)電流控制法 ......................................................................... 18 UC3854A 簡介 ..................................................................................... 19 IV UC3854A 的主要特點 ..................................................................20 UC3854A 的內(nèi)部結(jié)構(gòu) ..................................................................20 引腳說明 .....................................................................................22 本章小結(jié) ..............................................................................................25 第 4 章 仿真 Boost 型功率因數(shù)校正電路 .......................................................25 主電路參數(shù)設(shè)置 .................................................................................26 額定參數(shù) ...................................................................................26 主要電氣參數(shù) ...........................................................................26 升壓電感的計算 .......................................................................28 輸出電容的計算 .......................................................................28 功率元件 .....................................................................................29 Cr、 Cs、 Lr 及 VD VD VD3 .................................................29 控制電路 ..............................................................................................30 控制電路的結(jié)構(gòu) .........................................................................30 電 路工作原理 .............................................................................31 控制電路的設(shè)計 .........................................................................32 開環(huán)電路仿真 ......................................................................................37 閉環(huán)仿真 ..............................................................................................39 電壓控制環(huán)路部分 ...................................................................39 電流控制環(huán)路部分 ...................................................................39 仿真電路構(gòu)成 ..............................................................................40 閉環(huán)仿真波形及分析 ..................................................................41 仿真結(jié)果分析 .............................................................................42 本章小結(jié) ..............................................................................................42 結(jié)論 ..........................................................................