壓電式風力發電系統之設計與應用 - 高雄應用科技大學

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234 黃斯瑜、黃世疇圖 19 發電系統應用圖圖 20 轉速與電壓關係圖圖 21 發電系統點 LED 燈圖
壓電式風力發電系統之設計與應用 235 4. 結論本文以懸臂樑的彎曲系統作為設計基礎 , 設計一簡易固定架固定壓電懸臂樑 , 並利用強力磁鐵之磁力使壓電懸臂樑發生形變造成壓電效應 , 並搭配使用全橋式整流電路 , 將產生之電能儲存於電容中 , 形成一壓電懸臂樑發電系統。於實驗中 , 以有限元素分析軟體 ANSYS 分析壓電懸臂樑 , 以瞭解壓電懸臂樑之應力及應變分佈 , 並藉由調整轉軸轉速、壓電懸臂樑與轉軸間之磁鐵間距與排列方式、轉軸磁鐵數量與壓電懸臂樑之設置方向來探討其對電壓之關係 , 並用電容將產生之電壓儲存加以利用。且將壓電懸臂樑發電系統應用於自行車上 , 轉速於 950rpm, 可產生最高之 22.7V 電壓 , 搭配全橋式整流電路 , 可將產生之電能儲存於電容上 , 用以點亮 LED 燈 , 達到自主供電及夜間警示之效果。其中 , 轉軸以風力能為驅動源 , 壓電懸臂樑則以磁力為作動力故無損耗問題 , 既不產生廢棄物 , 也不會造成污染 , 可將對地球的污染降至最低 , 形成一環保可持續使用的綠色能源。本研究承蒙國科會補助 , 計畫編號 :NSC 96-2221-E-151-064, 特此致謝。致謝參考文獻 [1] J. Curie, and P. Curie, 1880, “Development by Pressure of Polar Electricity in Hemihedral Crystals with Inclined Faces”, Bull. Soc. Min de France, Vol. 3, pp. 90-102. [2] W. S. Hwang, and H. C. Parkt, 1993, “Finite Element Modeling of Piezoelectric Sensors and Actuators”, American Institute of Aeronautics and Astronautics Journal, Vol. 31, No. 5, pp. 930-937. [3] C. Q. Chen, X. M. Wang, and Y. P. Shen, 1996, “Finite Element Approach of Vibration Control Using Self-Sensing Piezoelectric Actuators”, Composite and Structures, Vol. 60, No. 3, pp. 505-512. [4] C.Y.K. Chee, L. Tong, and G.P. Steven, 1999, “A Mixed Model for Composite Beams with Piezoelectric Actuators and Sensors, ”Smart Materials and Structures, Vol.8, pp.417-432. [5] M. Kobayashi, T. Yamaguchi, and R. Horowitz, 2000, “Track-Seeking Controller Design for Dual-Stage Actuator in Magnetic Disk Drives”, Proceedings of American Control Conference, pp. 2610-2614. [6] M. Krommer, 2001, “On the Correction of the Bernoulli-Euler Beam Theory for Smart Piezoelectric Beams,” Smart Materials and Structures, Vol.10, pp.668-680. [7] J. Kymissis, C. Kendall, J. Paradiso and N. Gershenfeld, 1998, “Parasitic Power Harvesting in Shoes,” the Second IEEE International Conference on Wearable Computing. [8] S. Priya, C. T. Chen, D. Fye and J. Zahnd, “Piezoelectric Windmill: A Novel Solution to Remote Sensing”, Japanese Journal of Applied Physics, Vol.44, No.3, pp.104-107, 2005. [9] L. C. Rome, L. Flynn, E. M. Goldman, and T. D. Yoo, 2005, “Generating Electricity While Walking with Loads”, Science, Vol.309, pp.1725-1728. [10] T. K. Chung, D. G. Lee, M. Ujihara, G. P. Carman, 2007, “Design, Simulation, and Fabrication of a Novel Vibration-Based Magnetic Energy Harvesting Device” Proc. of Solid State Sensors Conf., pp.867-870. [11] V. R. Challa, M. G. Prasad and F. T. Fisher, 2008, “High Efficiency Energy Harvesting Device with Magnetic Frequency Tuning”, Proceedings of Sensord and Structures Technologies for Civil, Mechanical, and Aerospace Systems, Vol.6932, 69323Q. [12] V. R. Challa, M. G. Prasad, Y. shi and F. T. Fisher, 2008, “A Vibration Energy Harvesting Device with Bidirectional Resonance Frequency Tenability”, Smart Materials and Structures, Vol.17, pp.015035.
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壓電式風力發電系統之設計與應用 - 高雄應用科技大學

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