摘要
振荡水柱(OWC)驱动压电发电装置采用振荡水柱波浪能转换装置与复合圆形压电陶瓷片结合,主要由箱体、振荡水柱、压缩空气柱和复合圆形压电陶瓷片组成。首先基于线性波理论,采用三维Green函数法建立气室内水气动力学性能的空气压强理论计算模型,利用多维切比雪夫多项式求解气室内压强;其次根据压电陶瓷发电理论,结合材料力学的基础理论,建立圆形压电振子受压强作用的数学模型,进行受力分析和变形分析,得到复合压电振子的能量输出。振荡水柱驱动压电发电理论建模,实现数值模拟波浪能向电能的转换,为海面无线传感网络节点、小功率设备等持续供电装置的设计提供理论依据。
The OWC piezoelectric generation device consists of a chamber with one opening to the ocean wave below the sea level,the oscillating water column,the compressed air column and the composite circular piezoelectric ceramic oscillator membrane. The theoretical calculation model of the air pressure is derived using the three-dimensional Green function method and solved with multidimensional Chebyshev polynomial model. According to the theory of piezoelectric and the material mechanics theory,the mathematical model of circular piezoelectric vibrator under pressure is established. Then the intrinsic output power characteristics are simulated in detail. The optimization of the piezoelectric OWC fundamental modes is discussed as well. The theory system reviewed provides a theoretical basis of ocean wave energy harvesting and can be utilized as a guideline for the new generator design and improving output performance.These findings from a practical research may lead to the realization of functional and self-powered devices for wireless sensors using low-frequency mechanical movements driven by ocean wave energy.
作者
杜小振
张燕
文傲
朱文斗
于红
Du Xiaozhen;Zhang Yan;Wen Ao;Zhu Wendou;Yu Hong(College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China;College of Science, China University of Petroleum, Qingdao 266580, China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2019年第5期1198-1206,共9页
Acta Energiae Solaris Sinica
基金
山东省自然科学基金(ZR2016EEM23)
国家自然基金(51105234)
中国博士后科学基金(2015M582113)
关键词
波浪能
振荡水柱
压电发电
微电源
气室压强
wave energy
oscillating water column(OWC)
piezoelectric generator
micro power
chamber air pressure
