本文選題：LED驅(qū)動器 + MIC太陽能��； 參考：《南昌航空大學》2014年碩士論文

【摘要】：目前，傳統(tǒng)能源不僅儲量日益減少，而且?guī)淼奈廴締栴}也日益嚴重。要解決這一問題，可以從兩方面入手：一方面，從能源的獲取來看，太陽能、路面振動能量等新能源在日常生活中隨處可見，具有無污染、可再生等優(yōu)點。但是這些新能源受環(huán)境條件限制較大，存在能量密度低、電力供應不穩(wěn)定、不連續(xù)等缺點，因此，能量收集裝置的優(yōu)劣直接決定了新能源的采集效率。另一方面，從能源在照明領域的利用來看，LED憑借節(jié)能、環(huán)保、光效強、壽命長、體積小、驅(qū)動電壓低、無汞污染等優(yōu)點，成為照明領域的發(fā)展趨勢。但是LED要想充分發(fā)揮其在照明領域中的優(yōu)勢，必須借助于LED驅(qū)動電路。 本文利用多輸入直流變換器(MIC)技術，采用新能源聯(lián)合供電方式，將太陽能和采集到的道路路面振動能量結合為LED供電。利用光伏電池收集太陽能在日常生活中能夠經(jīng)常見到，而由壓電陶瓷陣列組成路面振動能量收集裝置，來收集路面振動能量則比較新穎。因此，，本課題在系統(tǒng)結構上作了創(chuàng)新，除擁有太陽能收集裝置之外，還增加收集道路路面振動能量的裝置，與單純的獨立太陽能光伏供電系統(tǒng)相比，具有更多的能量獲取渠道，提高了系統(tǒng)的能量采集效率。 本文利用雙輸入Buck變換器將太陽能和路面振動能量整合存儲入蓄電池中；采用Boost拓撲結構設計DC-DC變換器，作為由蓄電池為LED供電的驅(qū)動器；采用反激準諧振拓撲結構設計AC-DC變換器，作為由交流市電為LED供電的驅(qū)動器；并分別利用狀態(tài)空間平均法和PWM開關等效電路法對以上兩個LED驅(qū)動電路進行小信號分析，得到電路功率級傳遞函數(shù)，推導環(huán)路補償電路參數(shù)。設計的能量管理電路包括路面振動能量收集電路、蓄電池充電電路、環(huán)境亮度檢測電路和供電方式選擇控制電路。 本文設計制作了用于采集太陽能和路面振動能量的18W雙輸入Buck變換器、38W Boost LED驅(qū)動器和38W反激準諧振LED驅(qū)動器，其中兩個LED驅(qū)動器的輸出電壓和輸出電流均為54V/0.7A，確保LED能夠正常工作，實驗結果表明本課題所設計的LED供電系統(tǒng)具有較好的實用性，可以應用于現(xiàn)實生活中。
[Abstract]:At present, the traditional energy not only reduces the reserves day by day, but also brings the pollution problem day by day. To solve this problem, we can start from two aspects: on the one hand, from the point of view of energy acquisition, solar energy, road vibration energy and other new energy can be seen everywhere in daily life, with the advantages of non-pollution, renewable and so on. However, these new energy sources are limited by environmental conditions and have some disadvantages such as low energy density, unstable power supply and discontinuity. Therefore, the efficiency of new energy collection is directly determined by the merits and demerits of energy collection devices. On the other hand, with the advantages of energy saving, environmental protection, light efficiency, long life, small size, low driving voltage and no mercury pollution, LED has become the trend of lighting development. However, if LEDs want to give full play to their advantages in the field of lighting, they must rely on LED drive circuit. In this paper, the multi-input DC / DC converter (MIC) technology is used to combine solar energy with the collected vibration energy of road surface to provide LED power supply. The collection of solar energy by photovoltaic cells is often seen in daily life, but it is relatively new to collect the vibration energy of road surface by using piezoelectric ceramic array to collect the vibration energy of road surface. Therefore, the system structure of this project has been innovated. Besides solar energy collection device, it also increases the energy collection device for road surface vibration. Compared with the single solar photovoltaic power supply system, it has more energy acquisition channels. The energy collection efficiency of the system is improved. In this paper, dual-input Buck converter is used to integrate solar energy and road vibration energy into storage battery, boost topology is used to design DC-DC converter, which is used as driver for LED power supply by battery. A flyback quasi-resonant topology is used to design AC-DC converter, which is powered by AC power supply, and the state space averaging method and PWM switch equivalent circuit method are used to analyze the two LED drive circuits. The power level transfer function of the circuit is obtained and the circuit parameters of the loop compensation are derived. The designed energy management circuit includes road vibration energy collection circuit, battery charging circuit, environmental brightness detection circuit and power supply mode selection control circuit. In this paper, the 18W dual-input Buck converter and 38W boost LED driver and 38W flyback quasi-resonant LED driver are designed and fabricated for collecting solar energy and road vibration energy. The output voltage and output current of two LED drivers are both 54V / 0.7A to ensure that the LED can work properly. The experimental results show that the LED power supply system designed in this paper has good practicability and can be applied in real life.
【學位授予單位】：南昌航空大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM46

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