太陽光電發電系統目前仍然存在著轉換效率偏低以及建置成本偏高的問題,建置成本的降低可以透過大量生產以及標準化零組件等方法改善,發電效率的提升目前主要靠的是新材料的開發,還有最大功率追蹤技術的發展,和使用追日系統,以及減少系統上的能量損失來達成。 除了以上的幾種方法之外,還可以透過太陽光電模組降溫來提升太陽光電模組的發電功率,以達到系統效率提升的目的。太陽光電模組降溫會使得太陽光電模組的輸出電壓提升,以致提升模組輸出功率。 由本文的實驗結果得知,在太陽光電模組上加裝散熱裝置,使模組溫度下降後,確實可提升其輸出功率;不過提升輸出功率的同時,也必須考慮是否有額外輸入電力,以及使用散熱裝置的太陽光電模組增加輸出的電力是否能夠彌補額外輸入的電力。
In photovoltaic power generation system, it still exists problems like high building cost and low transfering efficiency. Reducing building cost can take mass production and standardized component. Rising transfering efficiency can take researching new material, developing maximum power point tracking technique, using sun tracking system and reducing power loss. Besides these methods, we can also use cooling of photovoltaic module to enhance photovoltaic module output voltage, so that the output power will be rise. This paper shows the experimental results that putting cooling device on photovoltaic module will lower the temperature of module, and then rising the output power. With rising output power, we should consider whether there is additional power input. We should also consider whether the rising of power output for adding cooling device on photovoltaic module is larger than additional power input.