2012-11-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/700334摘要：本計畫針對合作企業美菲德公司所開發的質子交換膜燃料電池系統商品，進行系統識別及強韌性分析，使設計之強韌控制器能安裝於同一系列之產品，提昇系統穩定性及效能，完成長時間運作測試，以達到系統量產之目標。 質子交換膜燃料電池是近年來廣受矚目的替代能源，具有零汙染、高效率及低噪音等優點，所以世界各國紛紛投入大量人力、物力進行研究。燃料電池系統的輸出電壓與負載電流呈現非線性關係，所以隨著系統的操作功率愈大，電壓變動範圍隨之增大；然而電器設備往往需要穩定電壓源，以達成穩定運作、延長使用壽命及提高安全性的目標，所以市面上之燃料電池系統多以加裝直流轉換器得到穩定的電壓源輸出，但實際使用上卻有功率轉換損耗之問題。所以我們過去針對燃料電池系統進行閉迴路控制，並設計強韌控制器，以提高系統輸出電力的穩定性及氫氣使用效率，並由理論及實驗驗證其成果。本計畫合作企業(美菲德公司)曾於台北市國際花卉博覽會中建置30kW定置型燃料電池發電系統，提供台北故事館室內外日間照明，使得台灣百年時尚古蹟也能達到能源使用零排放的綠色訴求；近年來則配合國內外電信業者開發定置型燃料電池不斷電系統，故需與學界密切合作，以求提高技術門檻與國際競爭力。而學界則可藉由參與開發實際產品，瞭解市場需求及未來發展目標。 本計畫擬針對美菲德公司開發的3kW質子交換膜燃料電池模組設計閉迴路強韌控制器，並解決量產時可能面對的難題：以一組燃料電池模組設計之控制器是否適用於同系列產品？為瞭解這個問題，我們首先必須考慮不同燃料電池模組在出廠時，其系統間隙 (system gaps) 是否小於強韌控制穩定區間 (stability bounds)；其次則必須考慮經過長時間運作後，系統變化 (system variations) 是否仍能維持在其穩定區間內。因此我們必須打算不同燃料電池系統進行識別及強韌性分析，並在回廠保養時進行後續監控，以瞭解系統變化情況，協助廠商往商品量產化更邁進一步，並提昇國際競爭力。 <br> Abstract: This project proposes system identification and robustness analyses of proton exchange membrane fuel cell (PEMFC) systems on the production line. If the system gaps are less than the stability bound, similar PEMFC modules on the production line can share the same robust controllers to improve system stability and performance. As an alternative energy source, PEMFC has drawn much attention because of its advantageous properties, such as non-pollution, high efficiency and low noisy. In the previous studies, we have successfully designed and implemented robust controllers to improve stability and performance of PEMFC systems in the lab. Therefore, the next question is whether the developed techniques can be used for commercial products. In order to verify whether the control strategies can be directly applied on the production line, we carry out this project in two phases. First, we will identify several PEMFC modules and design a robust controller, whose stability margin is greater than the overall system gaps. Though the controller design is performed using identification data from a few, instead of all, PEMFC models, system stability and performance of all PEMFC modules can still be guaranteed from the analyses. Second, we will test the PEMFC systems after long-term operation, when the manufacturers maintain the systems. We will develop a standard procedure for the engineers to quickly obtain the system data, in order to check if the system variations are still within the designed stability bound after long-time operations. The outcomes of this project will ensure the direct application of robust control to the PEMFC systems on the production line, by guaranteeing system stability and performance in terms of theoretical and experimental studies.燃料電池質子交換膜系統整合系統識別強韌控制Fuel CellPEMFCSystem IdentificationRobust ControlSystem Integration