燃料電池是一種潔淨零排放的新能源技術，近年來燃料電池技術的發展備受各國政府與企業重視，無論是學理上的基礎研究或者是商品化的應用開發均有長足的進步，但卻鮮少有人著重於燃料電池之最大功率追蹤之部分。
本文旨在建立起一燃料電池之最大功率追蹤器，根據不同負載時，此追蹤器可追蹤至燃料電池之最大功率點，並且在操作中負載切換時，亦可使燃料電池輸出最大功率。利用燃料電池之標準動態模型建立起真實燃料電池之動態模型，且可得知燃料電池為一非線性非時變系統。根據所需達成之目的，有各種不同的目標函數設計法。
本文所使用之追蹤法是以增量電導法為概念，將目標函數定義為 S= dp/dI，根據燃料電池的特性，擷取燃料電池所輸出的電壓與電流，經過控制法則的計算後，改變直流對直流升壓式轉換器之開關比之開關比，使系統達到最大功率輸出的目的。並持續穩定的輸出。
本文使用LABVIEW 配合周邊硬體與軟體來建構此控制器，比較動態模擬與實際實驗之相同與相異之處。

The Fuel cell is a clean and zero emission energy source, governments and enterprises around the world paid much attention to the development of the Fuel cells. Both basic researches and commercialization have significant improvements. However, only a few researches on maximum power tracking on the Fuel cell were addressed.
The purpose of this dissertation is to design and implement a maximum power tracking controller of the Fuel cell. It can track to the maximum power point of the Fuel cell under load variations. Based on the dynamic behavior of the Fuel cell, it can be described as a non-linear & time invariant system. According to the desired objective, different control strategies are available.
The control strategy we used is based on the sliding mode control concept. We define our objective function S as dp/dI. By achieving S=0, the state of the fuel cell will be driven such that the system has maximum power output effectively. The resulting approach is robust to system parameter variation by tuning the duty of a DC-DC boost converter.
Labview program was used to realize the control law for experimental studies. The result demonstrated the agreement between numerical and experimental studies.

[1] 黃秉鈞,2005,“科學發展”,vol.386

[2] Z. Oi, A. Kaufman,2002 ,”Activation of low temperature PEM fuel cells”, Journal of Power Sources,vol.111,pp.181-184.

[3] J. M. Correa, F. A. Farret, V. A. Popov, and M. G. Simoes,2005, “Sensitivity Analysis of the Modeling Parameters Used in Simulation of Proton Exchange Membrane Fuel Cells,” IEEE Transactions on Energy Conversion, Vol. 20, No. 1, pp. 211 – 218.

[4] Chen.C.C, Chen C.L. Chen,2009,” Robust maximum power point tracking method for photovoltaic cells: A sliding mode control approach”,solar energy,vol. 83,pp.1370-1378.

[5] 振芫禎,2008,”太陽能最大功率追蹤器之研究”, 大同大學電機工程研究所碩士論文.

[6] 黃昱智,2007,”滑動模式控制器應用於燃料電池發電系統之直流功率轉換器”, 國立台灣科技大學電機工程學系碩士論文.

[7]Tzuen-Lih Chern, Jerome Chang, Chien-Hung Chen, and Hann-Tzong Su,1999,”Microprocessor-Based Modified Discrete Integral Variable Structure Control for UPS”, IEEE Transactions on Industrial Electronics, Vol. 46, No. 2.

[8] Zhong Z.D. , Huo H.B. , Zhu X.J ,Cao G.Y. , Ren Y.,2008,” Adaptive maximum power point tracking control of fuel cell power plants”, Journal of Power Sources vol. 176 ,pp.259–269.

[9] 陳聯傑,2005,”PWM切換式降壓型DC-DC轉換器之H_∞控制設計”,國立成功大學系統及船舶機電工程研究所碩士論文.

[10] 黃鎮江,2004,”燃料電池”, 全華科技圖書.

[11] JamesLarmine, Andrew Dicks,2003,”Fuel Cell Systems Explained”,Wiley.

[12] 梁適安,1994,”交換式電源供給器之理論與實務設計”,全華科技圖書.