【正文】 t determines this DC converter based on the cascade technology. Analysis of DC converter dynamic characteristic, and DC converter is get design PI from controllerthe right model ,which can reduces the dynamic response time, improves noise immunity, and enhances the system Steady setting method is used to make the meet the requirements of PID parameters, gives the reasonable index requirements of PID parameters. Based on the series of DC converter technology different modes of simulation debugging, output voltage and current waveforms are tested under different conditions. By analyzing the simulation results, the feasibility of the converter to achieve a high boost ratio and low output ripple. Key words: high gain； Flyback_boost； single_switch； low output ripple 目錄 I 目錄 第 1 章 緒論 .................................................................................................................................... 1 升壓變換器的歷史背景 ................................................................................................ 1 開發(fā)新能源的緊迫性與可再生能源的開發(fā) ................................................................. 1 高增益變換器的現(xiàn)狀 ................................................................................................. 2 開關單元高增益直流變換器 ...................................................................................... 2 耦合電感高增益直流變換器 ...................................................................................... 3 傳統(tǒng)的 Boost 變換器工作原理 ..................................................................................... 4 Flyback 電路工作原理 ................................................................................................... 6 本文的研究內(nèi)容及意義 ....................................................................................................... 7 第 2 章 Boostflyback 變換器 ............................................................................................................ 8 變換器拓撲結(jié)構(gòu)與工作過程 ............................................................................. 8 拓補結(jié)構(gòu)及其工作原理 .............................................................................................. 8 拓撲工作過程分析 ................................................................................. 9 Boost DCDC 變換器模型 .................................................................................................... 11 本章小結(jié) ...........................................................................................................................13 第 3 章 電路參數(shù)計算及控制器設計 ................................................................................................14 設計要求： ........................................................................................................................14 ..........................................................................................................14 MOS 管參數(shù)設計 ......................................................................................................14 濾波電容參數(shù)設計 ...................................................................................................15 電感值計算： ..........................................................................................................16 Boost 電路二極管設計 ...............................................................................................16 控制器設計 ........................................................................................................................16 控制器的應用背景 ...................................................................................................16 控制器設計 ..............................................................................................................17 PID 參數(shù)整 定口訣： .................................................................................................18 試湊法求 PI 參數(shù) .....................................................................................................18 試湊數(shù)據(jù)總結(jié)： .......................................................................................................22 基于邊界整定法的經(jīng)驗公式： ..................................................................................22 本章小結(jié) ..........................................................................................................................23 第 4 章 主電路的仿真及結(jié)果分析 ...................................................................................................24 PSIM 電力電子仿真軟件 .....................................................................................................24 仿真輸出結(jié)果及分析 .........................................................................................................25 仿真主電路 ..............................................................................................................25 變化的輸入電壓，輸出電壓的響應曲線 ....................................................................28 負載突加的實驗仿真波形 ..........................................................................................29 本章總結(jié) ...........................................................................................................................31 第 5 章 總結(jié)與展望 ........................................................................................................................32 全文總結(jié) ...........................................................................................................................32 后期展望 ..........................................................................................................................32 參考文獻 ........................................................................................................................................33 致謝 ...............................................................................................................................................36 第 1 章 緒論 1 第 1 章 緒論 升壓變換器的歷史背景 開發(fā)新能源的緊迫性與可再生能源的開發(fā) 升壓式 DC— DC 變換器在通信、電子、計算機等領域有著廣泛的應