本文選題：多路輸出 + 反激變換器�。� 參考：《西安科技大學(xué)》2017年碩士論文

【摘要】：隨著電子技術(shù)的快速發(fā)展,電子設(shè)備需要更多不同等級(jí)電壓源為其供電,有時(shí)甚至需要負(fù)電壓。若采用一個(gè)電源僅給一個(gè)模塊電路供電,則整個(gè)系統(tǒng)需要多個(gè)模塊電源供電,勢(shì)必會(huì)造成設(shè)備的重量增加、體積變大、成本變高等不足。反激變換器因其具有拓?fù)浣Y(jié)構(gòu)簡(jiǎn)單、輸入與輸出電氣隔離、升壓與降壓范圍寬等優(yōu)點(diǎn),在中小功率開(kāi)關(guān)電源中得到了廣泛應(yīng)用,因此通過(guò)增加反激變壓器繞組組數(shù)輸出不同等級(jí)電壓可滿足設(shè)備的供電需求,為此,本文設(shè)計(jì)制作了一款+15V/IA,-15V/IA,+5V/1.5A三路輸出反激開(kāi)關(guān)電源樣機(jī)。本文首先對(duì)反激變換器拓?fù)浣Y(jié)構(gòu)和工作原理進(jìn)行全面分析,針對(duì)反激變換器在兩種不同工作模式下能量的傳輸過(guò)程進(jìn)行詳細(xì)的分析,總結(jié)了反激變換器工作在這兩種不同工作模式的優(yōu)缺點(diǎn),確定出樣機(jī)所采用的工作模式。在此基礎(chǔ)上,引出多路輸出開(kāi)關(guān)電源交叉調(diào)整率的概念、分析多路輸出反激變換器交叉調(diào)整率的影響因素以及目前常用的改善方法,采用電壓加權(quán)控制法、RCD鉗位電路、變壓器參數(shù)和結(jié)構(gòu)的優(yōu)化以及增加假負(fù)載等方法對(duì)交叉調(diào)整率進(jìn)行綜合改善。在理論分析的基礎(chǔ)上,采用UC3845作為主控芯片,設(shè)計(jì)樣機(jī)電路原理圖及制作反激變壓器。在Saber軟件環(huán)境下對(duì)原理圖進(jìn)行仿真實(shí)驗(yàn),驗(yàn)證其可行性。繪制樣機(jī)電路PCB板,制作實(shí)物樣機(jī),并對(duì)其分別采用電壓加權(quán)反饋控制法和傳統(tǒng)的單環(huán)路反饋控制法進(jìn)行實(shí)驗(yàn)測(cè)試,測(cè)試結(jié)果表明,本文所采用的綜合改善方法使交叉調(diào)整率得到了良好的改善,滿足了設(shè)計(jì)要求。
[Abstract]:With the rapid development of electronic technology, electronic equipment needs more and more different voltage sources to supply it, sometimes even negative voltage. If only one power supply is used to supply one module circuit, the whole system needs more than one module power supply, which will lead to the increase of equipment weight, the bigger volume and the higher cost. Flyback converter has been widely used in medium and small power switching power supply because of its advantages of simple topology, electrical isolation between input and output, wide range of boost and voltage reduction, and so on. Therefore, by increasing the number of windings of flyback transformer, the output voltage of different grades can meet the demand of power supply. Therefore, a 15V / IA-15V / IA-15V / IA, 5V / 1.5A three-way output flyback switching power supply prototype is designed and manufactured in this paper. In this paper, the topology and working principle of flyback converter are analyzed in detail, and the energy transfer process of flyback converter under two different working modes is analyzed in detail. The advantages and disadvantages of flyback converter in these two different operation modes are summarized, and the working modes used in the prototype are determined. On this basis, the concept of crossover adjustment rate of multi-channel output switching power supply is introduced, and the influencing factors of cross-adjustment rate of multi-output flyback converter and the commonly used improvement methods are analyzed. The voltage weighted control method is used to control the RCD clamp circuit. The optimization of transformer parameters and structure and the increase of false load can improve the crossover adjustment rate synthetically. On the basis of theoretical analysis, UC3845 is used as the main control chip to design the circuit schematic diagram of the prototype and to make the flyback transformer. In Saber software environment, the schematic diagram is simulated to verify its feasibility. The PCB board of the prototype circuit is drawn and the physical prototype is made. The voltage weighted feedback control method and the traditional single loop feedback control method are used for the experimental test. The test results show that, The comprehensive improvement method adopted in this paper improves the cross-adjustment rate well and meets the design requirements.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TM46

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 趙濤;劉漢忠;黃家才;徐開(kāi)蕓;;電流模式DCM反激變換電路的建模和設(shè)計(jì)[J];電源技術(shù);2014年11期

2 王月愛(ài);王勃;;電源技術(shù)的應(yīng)用研究與發(fā)展趨勢(shì)[J];中國(guó)集成電路;2012年04期

3 孟建輝;劉文生;;反激式變換器DCM與CCM模式的分析與比較[J];通信電源技術(shù);2010年06期

4 董硯;劉東波;孫鶴旭;劉漢奎;;多路單端反激式開(kāi)關(guān)電源的設(shè)計(jì)[J];河北工業(yè)大學(xué)學(xué)報(bào);2010年03期

5 靳文匯;范蟠果;閆少雄;葛林;;一種反激式開(kāi)關(guān)電源變壓器改進(jìn)設(shè)計(jì)方法研究[J];電力電子技術(shù);2009年01期

6 丘濤文;;開(kāi)關(guān)電源的發(fā)展及技術(shù)趨勢(shì)[J];電力技術(shù);2008年06期

7 李文才;魯傳峰;;新一代開(kāi)關(guān)電源發(fā)展趨勢(shì)[J];能源技術(shù)與管理;2008年05期

8 馬海嘯;龔春英;王紅梅;嚴(yán)仰光;;新型帶有箝位電容的交錯(cuò)反激變換器的研究[J];中國(guó)電機(jī)工程學(xué)報(bào);2007年28期

9 吳冬梅;蔡麗娟;;開(kāi)關(guān)電源的多路輸出技術(shù)發(fā)展綜述[J];電氣傳動(dòng);2006年04期

10 董文輝;金天均;陳輝明;;后級(jí)調(diào)整技術(shù)在多路輸出反激電路中的運(yùn)用[J];電工技術(shù)學(xué)報(bào);2005年12期

相關(guān)碩士學(xué)位論文 前4條

1 劉超;基于同步整流的多路輸出反激變換器的研究[D];西安科技大學(xué);2013年

2 孔建會(huì);多輸出變換器交調(diào)特性研究[D];東華大學(xué);2013年

3 蔡勁松;反激式變換器交叉調(diào)整率的研究[D];西南交通大學(xué);2010年

4 盧增藝;一種高效多路低電壓輸出開(kāi)關(guān)電源的研究[D];福州大學(xué);2004年

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本文編號(hào)：2109750