追日型太陽電池發電系統可靠度提升研究

The Study on the Reliability Enhancement of Solar-tracking PV System

丁偉倫(Wei-Lun Ting)

指導教授 ： 黃秉鈞

國立臺灣大學/工學院/機械工程學研究所/碩士(2010年)

https://doi.org/10.6342/NTU.2010.10610

摘要

本論文旨在探討單軸三角度追日太陽能電池發電系統的可靠度提升技術，利用機構設計改良方式，將追日機構模組化以降低製作成本，並提升機構強度。數位控制方面則使用時鐘作為追日系統控制關鍵元件以提升太陽電池發電系統發電量，並加入智慧型自我檢修控制，使時鐘因長時間使用所造成的時間誤差得以消除，藉此提升整體控制系統可靠度。
由3~5月的測試結果得知本追日發電系統在輻射量愈高的情況下，其發電量提升效果愈是顯著，3月及5月發電量都有約23%的提升效果，在4月天氣狀況不佳的情況下仍然有約19%的提升。追日機構每日依照4個時間點作追日動作，測試至今已連續4 個月沒有發生錯誤，時鐘每日所產生的時間誤差僅有0.6 秒，當時鐘的時間誤差大於1 小時，智慧型檢修控制也能有效地將時間誤差校正至15 分鐘內，證實本追日系統機構及數位控制系統的可靠度確實經得起考驗。

關鍵字

追日 ； 太陽電池 ； 可靠度

並列摘要

The main purpose of the thesis is about increasing reliability of one-axis three-position solar tracking power systems. We adjust and design the solar-tracking device to decrease productive cost and improve the strength. Additionally, we use the clock as the key component of the digital controller to increase the power of solar panel. Also, we use the intelligent self checking controller to correct the inaccuracy of the clock which caused by long-term usage. Moreover, the controller can improve reliability of the system.
According to the result from March to May, it revealed that positive correlation between solar irradiation and power generation of PV. During March and May, the power both up to 23 percents. In April, with unstable weather, there is still about 19 percents enhancement. The tracking device track the solar at 4 time points daily, there are no more mistakes in the coming four months. The time error of clock is only 0.6seconds per day, and when errors accumulated longer than 1 hour, the intelligent self checking system can correct the inaccuracy to less than 15 minutes. In conclusion, the research approved that tracking systems and digital controller are reliable.

並列關鍵字

Reliability ； Solar-tracking ； PV

參考文獻

[2]Kalogirou, S.A.,“Design and construction of a one-axis sun-tracking system”,Solar Energy,Vol.57,Issue 6,pp.465-469.(1996)

[4]Park,K.,Lee,J.H.,Kim,S.H.,Kwak,Y.K.,“Direct Tracking Control Using Time-Optimal Trajectories”,Control Engineering Practice,Vol.4,Issue 9,pp.1231-1240.(1996)

[5]Neville,R.C.,“Solar Energy Collector Orientation and Tracking Mode”,Solar Energy, Vol.20,Issue 1,pp.7–11.(1978)

[8] Min-Sheng Wu. “Charge and discharge control of high-performance solar lighting system” ”,Department of Mechanical Engineering National Taiwan University.(2005)

[1] 黃秉鈞：『94年經濟部能源科技委員會計劃書』，國立臺灣大學機械工程學系，16頁，2005年