本文選題：LED + 驅(qū)動(dòng)電源��； 參考：《西安電子科技大學(xué)》2014年碩士論文

【摘要】：隨著半導(dǎo)體技術(shù)的快速發(fā)展，LED(Light Emitting Diode)照明已經(jīng)在生活、生產(chǎn)中扮演著重要的角色。與傳統(tǒng)的LED開關(guān)電源相比，新型LED照明技術(shù)因其具有可靠性高、電氣隔離、光學(xué)調(diào)光、環(huán)保性能好等優(yōu)點(diǎn)而成為未來節(jié)能照明的發(fā)展方向。 針對(duì)LED的特性研究，論文設(shè)計(jì)了一款LED恒流驅(qū)動(dòng)電源。本文設(shè)計(jì)的驅(qū)動(dòng)電源采用兩級(jí)驅(qū)動(dòng)結(jié)構(gòu)。為了提高變換器輸入端功率因數(shù)，減少對(duì)電網(wǎng)的諧波污染，前級(jí)電路采用了PFC技術(shù)，對(duì)Boost PFC電路的工作原理進(jìn)行了詳細(xì)研究，對(duì)FAN7527B的外圍電路進(jìn)行了詳細(xì)的設(shè)計(jì)。為了減小開關(guān)損耗，提高變換器的效率，后級(jí)電路采用了準(zhǔn)諧振的反激變換技術(shù)，對(duì)準(zhǔn)諧振反激電路的工作原理進(jìn)行分析，設(shè)計(jì)了芯片STR-Y6753的外圍電路。開關(guān)電源的輸出級(jí)采用芯片AP4310完成恒流恒壓的功能。采用Saber軟件對(duì)LED電源進(jìn)行了建模仿真，得到電路的工作性能參數(shù)。 仿真結(jié)果分析表明，LED開關(guān)電源工作效率在85%以上，功率因數(shù)為0.90，紋波系數(shù)在1%以內(nèi)，，驗(yàn)證了設(shè)計(jì)方案的可行性。
[Abstract]:With the rapid development of semiconductor technology, LEDX Light Emitting Diode (LED) lighting has played an important role in daily life and production. Compared with the traditional LED switching power supply, the new LED lighting technology has the advantages of high reliability, electrical isolation, optical dimming, good environmental performance and so on, so it will become the development direction of energy-saving lighting in the future. In view of the characteristic research of LED, a LED constant current driving power supply is designed in this paper. The power supply designed in this paper adopts two-stage drive structure. In order to improve the input power factor of the converter and reduce the harmonic pollution to the power grid, the PFC technology is used in the front stage circuit. The working principle of the Boost PFC circuit is studied in detail, and the peripheral circuit of FAN7527B is designed in detail. In order to reduce the switching loss and improve the efficiency of the converter, the backstage circuit adopts the quasi-resonant flyback conversion technology, analyzes the working principle of the resonant flyback circuit, and designs the peripheral circuit of the chip STR-Y6753. The output stage of the switching power supply uses chip AP4310 to complete the function of constant current and constant voltage. Saber software is used to model and simulate the LED power supply, and the performance parameters of the circuit are obtained. The simulation results show that the efficiency of LED switching power supply is more than 85%, the power factor is 0.90 and the ripple coefficient is less than 1%. The feasibility of the design is verified.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM923.34

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