LED照明驅動電源研究與實現(xiàn)
發(fā)布時間：2018-11-01 11:56
【摘要】：本文的工作是設計一款可調光LED照明驅動電源,并進行仿真和調試。 本文首先介紹了LED照明的知識背景,然后介紹了驅動電源的五種常用的直流變換電路。本文研究了可控硅調光,并分析了四種調光兼容方案。本文還研究了功率因數(shù)校正和電磁兼容的工程方法。 根據(jù)設計需求,本文選用反激變換器和單級PFC作為驅動電源的拓撲,驅動電源工作于電流斷續(xù)模式并采用峰值電流控制方式。基于AP1682,本文著重設計了功率因數(shù)校正功能和反激變壓器,為提高可靠性,變壓器中增加了RCD箝位電路。本文還設計了EMI濾波電路、輸出濾波電路、線性補償電路和空載保護電路。最后,本文針對調光兼容問題,設計了阻尼電路、泄放電路以及深度調光電路。 基于Saber,本文對單級PFC反激變換器進行了仿真,分析了功率因數(shù)校正功能,分析了變壓器、開關管、副邊功率二極管的工作情況,分析了EMI濾波電路的工作效果�；贚Tspice IV,在不同的充電電阻下,本文對可控硅調光器的輸出電壓波形進行了仿真。 本文對驅動電源實物進行調試,分析了功率因數(shù)校正功能、輸出電流線性調整率和負載調整率、功率器件的工作情況、電磁兼容效果。接入調光器后,本文測試了調光曲線并驗證了深度調光的效果。
[Abstract]:The work of this paper is to design, simulate and debug a dimming LED lighting driver. This paper first introduces the knowledge background of LED lighting, and then introduces five kinds of DC conversion circuits commonly used in driving power supply. In this paper, thyristor dimming is studied and four dimming compatible schemes are analyzed. The engineering methods of power factor correction and electromagnetic compatibility are also studied in this paper. According to the design requirements, the flyback converter and single-stage PFC are selected as the topology of the driving power supply, which works in the current intermittent mode and adopts the peak current control mode. In this paper, the power factor correction function and flyback transformer are designed based on AP1682,. In order to improve reliability, the RCD clamp circuit is added to the transformer. EMI filter circuit, output filter circuit, linear compensation circuit and no-load protection circuit are also designed. Finally, the damping circuit, discharge circuit and depth dimming circuit are designed for dimming compatibility. Based on Saber, the single-stage PFC flyback converter is simulated, the power factor correction function is analyzed, the working condition of transformer, switch tube and auxiliary side power diode is analyzed, and the working effect of EMI filter circuit is analyzed. Based on LTspice IV, the output voltage waveform of thyristor is simulated under different charge resistance. In this paper, the function of power factor correction, the linear adjustment rate of output current and load adjustment rate, the working condition of power device and the effect of EMC are analyzed. After the dimmer is connected, the dimming curve is tested and the effect of depth dimming is verified.
【學位授予單位】：南京理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM923.34
本文編號：2303859
[Abstract]:The work of this paper is to design, simulate and debug a dimming LED lighting driver. This paper first introduces the knowledge background of LED lighting, and then introduces five kinds of DC conversion circuits commonly used in driving power supply. In this paper, thyristor dimming is studied and four dimming compatible schemes are analyzed. The engineering methods of power factor correction and electromagnetic compatibility are also studied in this paper. According to the design requirements, the flyback converter and single-stage PFC are selected as the topology of the driving power supply, which works in the current intermittent mode and adopts the peak current control mode. In this paper, the power factor correction function and flyback transformer are designed based on AP1682,. In order to improve reliability, the RCD clamp circuit is added to the transformer. EMI filter circuit, output filter circuit, linear compensation circuit and no-load protection circuit are also designed. Finally, the damping circuit, discharge circuit and depth dimming circuit are designed for dimming compatibility. Based on Saber, the single-stage PFC flyback converter is simulated, the power factor correction function is analyzed, the working condition of transformer, switch tube and auxiliary side power diode is analyzed, and the working effect of EMI filter circuit is analyzed. Based on LTspice IV, the output voltage waveform of thyristor is simulated under different charge resistance. In this paper, the function of power factor correction, the linear adjustment rate of output current and load adjustment rate, the working condition of power device and the effect of EMC are analyzed. After the dimmer is connected, the dimming curve is tested and the effect of depth dimming is verified.
【學位授予單位】：南京理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM923.34
【參考文獻】
相關期刊論文 前10條
1 陳家m8;徐龍祥;;RCD箝位反激變換器的設計與實現(xiàn)[J];電源技術應用;2002年10期
2 樊永隆;;反激式變換器中RCD箝位電路的設計[J];電源技術應用;2006年12期
3 許化民,阮新波,嚴仰光;單級功率因數(shù)校正AC/DC變換器的綜述[J];電力電子技術;2001年01期
4 居大鵬;;LED驅動器的調光技術[J];電子產品世界;2010年11期
5 路秋生;;LED調光的實現(xiàn)與有關問題[J];電子質量;2011年03期
6 徐江善;綠色革命——半導體照明[J];記者觀察;2003年10期
7 雷玉堂,黎慧;未來的照明光源—白光LED技術及其發(fā)展[J];光學與光電技術;2003年05期
8 王紅梅;黃華飛;唐春霞;;Saber仿真在電力電子技術教學中的應用[J];裝備制造技術;2007年01期
9 劉行仁,薛勝薜,黃德森,林秀華;白光LED現(xiàn)狀和問題[J];光源與照明;2003年03期
10 沈雄煒;王文君;吳金達;趙銀威;葉蕾;周德全;;LED燈調光電路[J];計算機光盤軟件與應用;2013年07期
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