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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/22470
Title: | 太陽電池充電系統充電性能提升研究 A Research on Improving Charge Performance of Solar Energy Generation System |
Authors: | Zih-Hao Liao 廖子豪 |
Advisor: | 黃秉鈞 |
Keyword: | 鉛酸蓄電池,超級電容,鋰電池,充電效率,可靠度, Lead-Acid battery,Supercapacitor,Li-ion battery,Charge Efficiency,Reliability, |
Publication Year : | 2010 |
Degree: | 碩士 |
Abstract: | 本研究主要探討如何提升太陽電池發電系統充電性能,以用於太陽能LED照明系統。研究內容包含鉛酸蓄電池高溫環境的充電特性,超級電容應用於太陽能充電系統提升充電性能探討,以及鋰電池充放電控制,最後討論使用環控箱來存放不同蓄電池的成本分析。
鉛酸蓄電池在高溫環境操作時壽命會急速下降,所以在高溫環境下本研究利用環控箱放置鉛酸蓄電池,使得鉛酸蓄電池可以在最佳溫度操作點作充放電循環,延長鉛酸蓄電池壽命。 戶外實測證明超級電容並聯鉛酸電池系統對太陽電池充電效率可以提升,再以輻射量變化效應解釋加入超級電容得以提升效率的原因,並且以太陽電池充電系統充電模型模擬輻射量變化劇烈段佐證加入超級電容可以增加充電能量。 利用鋰電池動態系統建立太陽電池充電系統模型,設計PI控制器,運用PWM充放電控制技術,使得鋰電池端電壓不超過電壓過充點,增加太陽發電系統可靠度。 針對高溫環境下蓄電池選用,比較鉛酸蓄電池與鋰電池搭配與不搭配環控箱的成本效益。 The research focuses on how to enhance charge performance of solar cell power generation system, for use in solar LED lighting systems. First, discuss lead-acid battery charge characteristics under high ambient temperature. Second, investigate increasing energy storage of solar cell generation system by paralleling supercapacitor. Third, design Li-ion battery charge and discharge cycle-use controller. Finally, discuss the cost of using temperature-controlled box to place different batteries. Lead-acid battery cycle-use life must rapidly decline when operating in high ambient temperature. For prolonging lead-acid battery cycle-use life, this research used temperature-controlled box to place lead-acid battery under optimal temperature operation point. Outdoor experimental results indicate that lead-acid battery in parallel supercapacitor system can improve the charge efficiency of solar cell power generation system. Then use effects of changes in radiation to explain why paralleling supercapacitor can improve the charge efficiency. After that, use solar cell charging model to simulate under radiation rapid changing. From the results, both simulation and outdoor experimental result show that paralleling supercapacitor can increase storage energy. For improving solar cell generation system’s reliability, this research builds the dynamic models of Li-ion battery and designs a PI controller to limit the charge voltage. Choose the best battery under high ambient temperature. Then compare with the cost of lead-acid and of Li-ion battery match or do not match the temperature-controlled box. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/22470 |
Fulltext Rights: | 未授權 |
Appears in Collections: | 機械工程學系 |
Files in This Item:
File | Size | Format | |
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ntu-99-1.pdf Restricted Access | 2.95 MB | Adobe PDF |
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