Enhanced galloping energy harvester with cooperative mode of vibration and collision

作     者：Qiong WANG Zewen CHEN Linchuan ZHAO Meng LI Hongxiang ZOU Kexiang WEI Xizheng ZHANG Wenming ZHANG Qiong WANG;Zewen CHEN;Linchuan ZHAO;Meng LI;Hongxiang ZOU;Kexiang WEI;Xizheng ZHANG;Wenming ZHANG

作者机构：Hunan Provincial Key Laboratory of Vehicle Power and Transmission SystemHunan Institute of EngineeringXiangtan 411104Hunan ProvinceChina State Key Laboratory of Mechanical System and VibrationSchool of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China 

出 版 物：《Applied Mathematics and Mechanics(English Edition)》 (应用数学和力学（英文版）)

年 卷 期：2022年第43卷第7期

页      面：945-958页

核心收录：

学科分类：08[工学] 0701[理学-数学] 080101[工学-一般力学与力学基础] 0801[工学-力学（可授工学、理学学位）] 

基　　金：the National Natural Science Foundation of China (Nos. 11802091and 12172127) the Hunan Province Science and Technology Innovation Program of China(Nos. 2020JJ3019 and 2019RS2044) the Scientific Researchof Hunan Provincial Department of Education of China (No. 21A0463) 

主　　题：energy harvesting wind energy galloping piezoelectric energy harvester(PEH) 

摘      要：The low power and narrow speed range remain bottlenecks that constrain the application of small-scale wind energy *** paper proposes a simple,lowcost,and reliable method to address these critical issues.A galloping energy harvester with the cooperative mode of vibration and collision(GEH-VC)is presented.A pair of curved boundaries attached with functional materials are introduced,which not only improve the performance of the vibration energy harvesting system,but also convert more mechanical energy into electrical energy during *** beam deforms and the piezoelectric energy harvester(PEH)generates electricity during the flow-induced *** addition,the beam contacts and separates from the boundaries,and the triboelectric nanogenerator(TENG)generates electricity during the *** order to reduce the influence of the boundaries on the aerodynamic performance and the feasibility of increasing the working area of the TENG,a vertical structure is *** the wind speed is high,the curved boundaries maintain a stable amplitude of the vibration system and increase the frequency of the vibration system,thereby avoiding damage to the piezoelectric sheet and improving the electromechanical conversion efficiency,and the TENG works with the PEH to generate *** the boundaries can protect the PEH at high wind speeds,its stiffness can be designed to be low to start working at low wind *** electromechanical coupling dynamic model is established according to the GEH-VC operating principle and is verified *** results show that the GEH-VC has a wide range of operating wind speeds,and the average power can be increased by 180%compared with the traditional galloping *** GEH-VC prototype is demonstrated to power a commercial temperature *** study provides a novel perspective on the design of hybrid electromechanical conversion mechanisms,that is,to combine and collaborate based on their respective char