CAJ | 학술논문

针对光伏发电系统模块多、输出电压低等问题,提出了一种多路输入高升压Boost变换器。首先分析了2路输入高升压Boost变换器的工作原理及性能特点,然后通过拓扑推演,得到了n路输入高升压Boost变换器。在此基础上搭建了输出功率为100 W的实验样机,实验结果表明：n路输入电压平衡时,输出电压与输入电压之比是Boost变换器的n倍;控制简单,无论各个输入电压源电压相等与否,均可以通过一套控制系统实现输出电压恒定;开关器件电压应力低,可以选择额定电压低的器件,有利于提高变换器效率。
침대광복발전계통모괴다、수출전압저등문제,제출료일충다로수입고승압Boost변환기。수선분석료2로수입고승압Boost변환기적공작원리급성능특점,연후통과탁복추연,득도료n로수입고승압Boost변환기。재차기출상탑건료수출공솔위100 W적실험양궤,실험결과표명：n로수입전압평형시,수출전압여수입전압지비시Boost변환기적n배;공제간단,무론각개수입전압원전압상등여부,균가이통과일투공제계통실현수출전압항정;개관기건전압응력저,가이선택액정전압저적기건,유리우제고변환기효솔。
Directed towards problems that there are too many photovoltaic modules and the output voltages of them are relative low in the typical photovoltaic grid-connected power system,a non-isolated high step-up Boost converter with multiple-input was proposed in this paper.Firstly,the derivation of the converter with dual input was presented and its operation principle and steady state performance were analyzed in detail.Secondly,the n-input high step-up Boost converter made up of n Boost cells was deduced.Finally,an experimental prototype rated 100 W was built and the experimental results were given.The result has showed that： First,If input voltage balancing,the voltage gain is n times of the basic Boost converter,where n is the number of input port.Second,output voltage can be controlled without more control than basic Boost converter.Third,the voltage stress is lower than basic Boost converter and lower voltage MOSFET can be used,and the converter efficiency can be increased further.