【正文】 畢 業(yè) 設(shè) 計(jì)（論 文） 題 目 戶用型中小功率獨(dú)立光伏發(fā)電 系統(tǒng)的研究與設(shè)計(jì) 畢業(yè)設(shè)計(jì)（論文）專用紙 I 摘 要 太陽(yáng)能光伏發(fā)電是一種將太陽(yáng)光輻射能 量直 接轉(zhuǎn)化為電能的發(fā)電技術(shù)，它是可再生能源和新能源的重要組成部分，被認(rèn)為是當(dāng)今世界上最有發(fā)展前景的新能源技術(shù) 。 打印部分： 8 30 31 參考文獻(xiàn) 本文系統(tǒng)地介紹了獨(dú)立光伏系統(tǒng)的結(jié)構(gòu)、工作原理、控制方法等方面的內(nèi)容，為降低系統(tǒng)體積及提高系統(tǒng)效率，提出“推挽升壓 +全橋逆變”的設(shè)計(jì)方案。推挽升壓的控制器采用電壓型控制芯片 SG3525,采用電壓反 饋，增加了系統(tǒng)的動(dòng)態(tài)響應(yīng)速度，同時(shí)詳細(xì)討論了高頻變壓器的設(shè)計(jì)、濾波元件參數(shù)的選擇等。逆變環(huán)節(jié)采用 PWM調(diào)制方式，控制芯片為 PIC16F73，簡(jiǎn)化了驅(qū)動(dòng)電路設(shè)計(jì)。軟件設(shè)計(jì)中，采用瞬時(shí)電壓反饋，增加了電路保護(hù)等功能，論文闡述了軟件設(shè)計(jì)總體思想構(gòu)架，給出了程序代碼。 最后 ,利用 單片機(jī)仿真軟件 proteus對(duì)系統(tǒng)進(jìn)行仿真并給出仿真原理圖及仿真波形。 關(guān)鍵詞：光伏發(fā)電 推挽升壓 單相全橋逆變 PIC16F73 畢業(yè)設(shè)計(jì)（論文）專用紙 II Abstract Solar photovoltaic power generation is a kind of technology which can convert solar radiation energy into electricity directly,solar energy is renewable energy and an important part of new energy, which is considered to be the world39。s most development prospects of new energy technology. This paper introduces the independent photovoltaic system structure, working principle and control methods detailedly. In order to reduce system volume and improve the efficiency of the system, the paper puts forward to an inverter by using the pushpull converter and singlephase fullbridge inverter design proposal. In the pushpull controller part,the paper uses the voltage type control chip SG3525,choosing voltage feedback to increase the system dynamic speed of response,at the same time,the paper also discusses the highfrequency transformer design,the filter ponents parameters choices in detail。 in the inverter part ,the paper use PWM inverter link, and the control chip is PIC16F73,this makes the system simple. In the software design,the paper uses the transient voltage feedback and meanwhile,increase circuit protection function, the paper also elaborates the overall framework of software design and displays program code. Finally, the paper uses single chip puter simulation software the proteus simulink the system and gives the simulation principle diagram and waveform. Key words: photovoltalc power system PushPull Converter singlephase fullbridge inverter PIC16F73 畢業(yè)設(shè)計(jì)（論文）專用紙 III 目 錄 1 緒論 .......................................................................................................................... 1 太陽(yáng)能光伏發(fā)電技術(shù) ..................................................................................... 1 太陽(yáng)能光伏發(fā)電的概況 ...................................................................... 1 太陽(yáng)能光伏發(fā)電的發(fā)展現(xiàn)狀及應(yīng)用前景 .......................................... 1 太陽(yáng)能光伏發(fā)電的優(yōu)點(diǎn) ...................................................................... 2 太陽(yáng)能光伏發(fā)電系統(tǒng) ..................................................................................... 2 太陽(yáng)能光伏發(fā)電的基本原理 .............................................................. 2 太陽(yáng)能光伏發(fā)電系統(tǒng)的分類 .............................................................. 3 本文的研究?jī)?nèi)容 ............................................................................................. 5 2 獨(dú)立光伏發(fā)電系統(tǒng)的研究與設(shè)計(jì) ......................................................................... 6 獨(dú)立光伏發(fā)電系統(tǒng)的組成 ............................................................................. 6 太陽(yáng)能電池 .......................................................................................... 6 蓄電池組 .............................................................................................. 6 逆變器 .................................................................................................. 7 控制器 .................................................................................................. 7 獨(dú)立光 伏發(fā)電系統(tǒng)對(duì)逆變電源設(shè)計(jì)的要求 ................................................. 7 主電路拓?fù)浣Y(jié)構(gòu)的設(shè)計(jì) ................................................................................. 8 升壓環(huán)節(jié)拓?fù)浣Y(jié)構(gòu)比較 ...................................................................... 8 逆變電源 的基本工作原理 ................................................................ 10 光伏發(fā)電系統(tǒng)中逆變器主電路拓?fù)浣Y(jié)構(gòu)比較 ................................ 11 獨(dú)立光伏發(fā)電系統(tǒng)中逆變器控制方法的比較 ................................ 11 獨(dú)立光伏發(fā)電逆變電源的系統(tǒng)結(jié)構(gòu)框圖 ........................................ 12 3 光伏發(fā)電電池容量及光伏陣列的設(shè)計(jì) ............................................................... 14 太陽(yáng)能光伏發(fā)電蓄電池組的設(shè)計(jì) ............................................................... 14 畢業(yè)設(shè)計(jì)（論文）專用紙 IV 蓄電池容量設(shè)計(jì)的基本原理 ............................................................ 14 蓄電池容量的計(jì)算 ............................................................................ 16 太陽(yáng)能光伏陣列的設(shè)計(jì) ............................................................................... 17 太陽(yáng)能電池組件設(shè)計(jì)的基本原理 .................................................... 17 太陽(yáng)能電池組件配置計(jì)算 ................................................................ 18 4 獨(dú)立光伏發(fā)電系統(tǒng)逆變電源的設(shè)計(jì) ................................................................... 20 推挽式 DC／ DC 變換器原理介紹 ................................................................. 20 推挽式電路變壓器的偏磁現(xiàn)象 ................................................................... 20 推挽式變壓器偏磁現(xiàn)象產(chǎn)生的原因 ................................................ 20 推挽式變壓器偏磁的抑制方法 ........................................................ 21 推挽式升壓電路設(shè)計(jì) ................................................................................... 22 推挽式 DC／ DC升壓電路拓?fù)浣Y(jié)構(gòu) .................................................. 22 控制電路的設(shè)計(jì) ................................................................................ 22 電壓采樣隔離電路 ............................................................................ 25 獨(dú)立光伏發(fā)電系統(tǒng)推挽升壓電路的原理圖 .................................... 26 推挽升壓電路環(huán)節(jié)電路參數(shù)的選擇 ................................................ 27 逆變主電路的設(shè)計(jì) ....................................................................................... 29 5 系統(tǒng)軟件設(shè)計(jì)與仿真 ...................................................................................