- 學位論文
以切換電源技術配合最大功率點追蹤法提升太陽能供電系統效率
Integrated switching power supply technology with the maximum power point tracking method to improve the efficiency of the solar power system
摘要
各國政府雖然大力推行太陽能供電，迄今效果卻差強人意。主要原因有二：第一，太陽能模組必須盡可能安裝在寬闊的空間，大多不易做到。第二，許多提升太陽能供電系統效率之研究，都僅著眼在最大功率點追蹤，即針對太陽能模組能達到的最大功率輸出進行研究和改良。但太陽能模組終究只是太陽能供電系統的部份，其他造成的損耗依舊會降低系統之供電效率。 本研究用已獲得台灣、大陸的新式專利，編號為M376062之太陽能充電裝置，其構想為利用切換電源技術將太陽能模組的輸出電壓提升以降低傳導損耗，並且讓太陽能模組得以並聯的方式安裝，方便針對場地限制進行規劃。但，其缺點有二，一為切換電源裝置本身將使用為數眾多的大容量之電解質電容，如此電解質電容就容易受環境影響而折損；二為此專利之裝置之輸出仍是直流電，但目前大多數家電製品均需要交流電為電源。 本研究整合最大功率點追蹤與切換電源技術兩者的優勢，運用多階段偵測太陽能模組之最大功率點之觀念，再把太陽能模組的輸出直流電力提升到能夠直接輸入變頻器的電壓，因此太陽能模組之輸出得不斷被運用。最後證實，本研究能有效減少傳導損耗，提升太陽能供電系統效率，不用購置過多太陽能模組，也針對安全性提供隔離直流與交流電力之特色。
並列摘要
Although governments vigorously solar power, so far the effect is unsatisfactory. There are two main reasons: First, the solar panels must be installed in the wide space as possible, most cases are not easy to do. Second, many studies to improve the efficiency of solar energy always focus on maximum power point tracking, which is method for seeking maximum power output that solar panels can achieve. However, solar panels are only part of system, resulting in the loss of other parts still reduce the efficiency. In this study, based on a new patent in Taiwan and China - solar charging device, boost the voltage to reduce the conduction losses. It also makes solar panels can be arranged in parallel, and better meet the style and space limitations. But it has two shortcomings. First, switching power supplier usually use numbers of high-capacity electrolyte capacitors, the electrolyte capacitors vulnerable to environmental effects and impairment. Second, output of the device is still direct current, but the majority of home appliances products adopt analog current power. So, we integrated switching power supply technology and maximum power point tracking both, detect maximum power points by multi-stages idea, then boost the output to higher voltage for inverter. Thus, solar panels’ output will be applied continuously. At the end, the result not only reduced the conduction losses to improve the efficiency of solar power system, which helps to reduce the amount of solar panels, but also provided a feature to isolate direct and analog current power for safety matter.