Analysis of a Clapping Vibration Energy Harvesting System in a Rotating Magnetic Field
學年 111
學期 1
出版(發表)日期 2022-09-13
作品名稱 Analysis of a Clapping Vibration Energy Harvesting System in a Rotating Magnetic Field
著者 Yi-Ren Wang; Chao-Kang Feng; Chin-Han Cheng; Pin-Tung Chen
著錄名稱、卷期、頁數 Sensors 22(18), 6916
摘要 This technical note proposes a clapping vibration energy harvesting system (CVEH system) installed in a rotating system. This device includes a rotating wheel, a drive shaft that rotates the wheel, and a double elastic steel sheet fixed on the drive shaft. One of the free ends of the steel is fixed with a magnet, and the free end of the other elastic steel is fixed with a PZT patch. We also install an array of magnets on the periphery (rim) of the wheel. The rim magnets repulse the magnet on the elastic steel sheet of the transmission shaft, causing the elastic steel to oscillate periodically, and slap the piezoelectric patch installed on the other elastic steel sheet to generate electricity. In this study, the authors’ previous study on the voltage output was improved, and the accurate nonlinear natural frequency of the elastic steel was obtained by the dimensional analysis method. By adjusting the rotation speed of the wheel, the precise frequency was controlled to accurately excite the energy harvesting system and obtain the best output voltage. A simple experiment was also performed to correlate with the theoretical model. The voltage and power output efficiencies of the nonlinear frequency to linear frequency excitation of the CVEH system can reach 15.7% and 33.5%, respectively. This study confirms that the clapping VEH system has practical power generation benefits, and verifies that nonlinear frequencies are more effective than linear frequencies to excite the CVEH system to generate electricity.
關鍵字 energy harvester;piezoelectric patch;dimensional analysis
語言 en
ISSN 1424-8220
期刊性質 國外
收錄於 SCI
通訊作者 Yi-Ren Wang
國別 CHE
出版型式 ,電子版

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