独立光伏发电系统最大功率点跟踪原理分析及仿真研究.doc

独立光伏发电系统最大功率点跟踪原理分析及仿真研究

【摘  要】：本论文以太阳能光伏发电系统为研究对象，以获取太阳能电池的最大功率为目标。论文通过分析光伏电池特性，推导Boost电路阻抗变换关系，在Matlab中对光伏电池、Boost电路建模，改变Boost占空比寻找最大功率点。论文最后给出光伏发电系统最大功率点跟踪方案即改变Boost占空比使得负载的等效阻抗与光伏电池阵列内部阻抗相匹配。

【关键词】：太阳能电池、最大功率点跟踪、升压电路 、仿真
 
Principle analyze and simulation research of the maximum power point tracking Stand-alone Photovoltaic System

【Abstract】：In this paper, in order to obtain the maximum power of solar cells, photovoltaic systems were discussed and analyzed. The characteristics of photovoltaic cells were analyzed. Besides, the relations Impedance transformation of Boost Circuit was derived in this paper. We attempt to change Boost circuit duty cycle, In order to search for the maximum power point of photovoltaic systems. The last program selected for photovoltaic systems maximum power point tracing that is changing the Boost duty cycle makes the equivalent impedance of external load to match the photovoltaic systems internal impedance.

【Keywords】：solar cell、maximum power point tracking 、Boost、simulation