太陽能電池發電系統遮蔽效應下最大功率追蹤方法

A Maximum Power Point Tracking Method of Solar Photovoltaic System under Partial Shading Effects

江士傑(Shi-Jay Chang)

指導教授 ： 洪穎怡 ； 楊宏澤

中原大學/工學院/電機工程研究所/碩士(2009年)

https://doi.org/10.6840/cycu200900408

摘要

本論文針對在遮蔽效應下太陽能電池輸出特性的非線性變化規劃一最大功率追蹤法則，因應在多個區域最大功率點時，仍然可以追蹤到全域最大功率點。
本文所提出之方法是利用MATLAB模擬軟體進行規劃，經過穩態以及暫態的日射量變化測試，並且模擬實際遮蔽效應下太陽能電池的輸出特性進行同時多個區域最大功率點的追蹤。
實驗架構為單一太陽能模組75W、升壓型直流轉換器、數位訊號處理器與一組電壓電流感測器，於此系統中之最大功率追蹤加入最常見的擾動觀察法作為本文所提出之方法比較對象。結果顯示，本文所提出之方法明顯優於擾動觀察法，操作於最大功率點的誤差率可控制在2.8%以內，無論是否發生遮蔽效應皆可確實的追蹤於全域最大功率點。

關鍵字

太陽能電池 ； 遮蔽效應 ； 最大功率追蹤 ； 黃金數搜尋法

並列摘要

This thesis has planned and proposed a maximum power point tracking method in according output characteristic of non-linear of solar cells for shading effect. When output characteristic of solar cells exist a lot of local maximum power point, the proposed method could track to global maximum power point.
Using simulation software of MATLAB planned the maximum power point tracking method in thesis, and tested with stable insolation and transient insolation on solar cells. MATLAB can simulate real non-linear output characteristic of solar cells and track to simultaneous existed a lot of local maximum power points for shading effect.
The experiment system was composed of one solar cell 75Watts, one boost converter, digital signal processor and a pair of voltage and current sensor. Making a common perturbation and observation method in the system is compared with the proposed method in thesis. The result of the proposed method is better than the perturbation and observation method, because error ratio of maximum power point of the proposed method was controlled and not exceeded 1.9% to 2.8%. Conclusion, the shading-effects dose happen it or not, output power point of solar cells can operate on global maximum power point exactly with the propose method.

並列關鍵字

shading effect ； solar cells ； maximum power point tracking ； golden search method

參考文獻

[23] 周俊男，“太陽能發電整流變流器與市電併聯系統之研製”，中原大學電機工程學系碩士學位論文，2006。

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