【正文】 system designed to verify the feasibility of the design. By designing a detection circuit, a control circuit for controlling the EPS system, Achieve when the electric supply is normal, the grid to charge the battery in EPS. EPS can be quickly transformed into a discharged state power to the load control program when the electric supply failure from mains. Keywords Single appropriate emergency power supply, Bidirectional DC / DC converter, SPWM Inverter III 目 錄 摘要 ....................................................................................................................... I Abstract .................................................................................................................II 第 1章 緒論 ........................................................................................................ 1 課題背景 ............................................................................................... 1 課題研究現(xiàn)狀 ................................................................................. 1 選題的意義 .................................................................................... 2 發(fā)展趨勢 ........................................................................................ 2 EPS 與相關(guān)產(chǎn)品的比較 ........................................................................ 3 EPS 與 UPS ..................................................................................... 3 EPS 與發(fā)電機(jī)組 ............................................................................. 4 EPS 與自帶蓄電池應(yīng)急燈 ............................................................. 5 第 2章 基本方案設(shè)計(jì) ........................................................................................ 6 設(shè)計(jì)思路及結(jié)構(gòu) ................................................................................... 6 設(shè)計(jì)思路 ........................................................................................ 6 EPS 基本結(jié)構(gòu) ................................................................................. 6 PWM 控制技術(shù)簡介 .............................................................................. 8 PWM 控制技術(shù)及其發(fā)展 .............................................................. 8 SPWM 控制技術(shù) ............................................................................ 8 SPWM 技術(shù)原理 ............................................................................ 9 小結(jié) ..................................................................................................... 10 第 3章 EPS系統(tǒng)主體設(shè)計(jì) ............................................................................... 11 單相不可控整流電路 ...........................................................................11 控制原理 .......................................................................................11 主要數(shù)量關(guān)系 .............................................................................. 12 雙向 DC/DC 變換器 ........................................................................... 12 免維護(hù)鉛酸蓄電池 ...................................................................... 12 雙向 DC/DC 變換器的結(jié)構(gòu)和工作原理 .................................... 13 電路參數(shù)設(shè)計(jì) .............................................................................. 17 建 立變換器的小信號(hào)模型 .......................................................... 19 IV 變換器控制方案設(shè)計(jì) ...................................................................21 單相 SPWM 逆變器 ............................................................................23 工作原理及控制策略 ....................................................................24 雙閉環(huán)系統(tǒng)的傳遞函數(shù) ...............................................................25 逆變器的參數(shù)設(shè)計(jì) .......................................................................28 小結(jié) ......................................................................................................29 第 4章 系統(tǒng)仿真 .............................................................................................. 30 系統(tǒng)分部仿真結(jié)果 ..............................................................................30 單相全橋不可控整流電路仿真 ...................................................30 單相 SPWM 逆變電路仿真 .........................................................31 雙向 DC/DC 變換電路仿真 .........................................................35 EPS 系統(tǒng)整體仿真結(jié)果 .......................................................................37 市電突然中斷情況仿真 ...............................................................40 市電恢復(fù)正常情況仿真 ...............................................................42 負(fù)載突變情況仿真 .......................................................................43 小結(jié) ......................................................................................................45 結(jié)論 .................................................................................................................... 46 參考文獻(xiàn) ............................................................................................................ 47 致謝 .................................................................................................................... 49 附錄 1 ................................................................................................................. 50 附錄 2 ................................................................................................................. 55 附錄 3 ................................................................................................................. 59 附錄 4 ................................................................................................................. 70 附錄 5 ................................................................................................................. 80 第 1章 緒論 1 第 1章 緒論 課題背景 EPS（ Emergency Power Supply）應(yīng)急電源是電源行業(yè)中的一種新型電源產(chǎn)品， 現(xiàn)廣泛應(yīng)用于建筑電氣、工業(yè)