近年來因溫室效應造成環境的破壞,為了減少溫室效應的影響也加速了綠色能源的發展,綠色能源的訴求為產物無汙染,例如太陽能、風能和氫能與燃料電池等等的綠色能源。本篇研究主要是利用質子交換膜燃料電池和二次電池建構混合電力系統,燃料電池利用氫氣和氧氣進行電解水的逆反應,而其產物有電、水和熱能並不含有危害環境的物質且其效率高,所以希望發展燃料電池以降低引擎或是傳統發電機所產生的碳氧化物。 混合燃料電池和二次電池系統是為了提高系統的使用效率且可以維護燃料電池使其壽命更長久,而二次電池的選用目的在於其可以快速放電的特性以彌補燃料電池反應較慢的缺點。混合系統又可以分為主動式和被動式兩種,我們著重在被動式混合系統的研究,利用燃料電池性能曲線的特性加上混合電壓的設定可以使得系統得以運作,相較於主動式系統被動式系統中使用的元件較少,系統架構也可以更加簡單,所損耗的能量可減少使得系統可以更有效率且成本也可降低。
In the recent years, the greenhouse effect destroys the environment. To reduce the green house effect, the green energy is developed quickly. The green energy such as solar, wind energy, hydrogen and fuel cells produce no pollution products. This study investigates a passive hybrid power system using a proton exchange membrane fuel cell and a secondary battery pack. The products of fuel cell are electricity, water and heat, which do not pollute the environment. The development of the fuel cell helps reduce the carbon oxide, the product of internal combustion engine. The hybrid system is divided into active systems and passive systems. This study emphasizes on the passive hybrid system. The fuel cell and secondary battery hybrid system is aimed to improve the system efficiency and protect fuel cell for longer life. Secondary battery has the characteristic of quick discharge, so it can support the fuel cell's slow response. Compared with the active system, the passive system uses less components and a simpler control strategy. It can reduce the energy loss, so the system will have higher efficiency and lower cost.