基于风致振动效应的压电能量收集器技术

Technical of Piezoelectric Energy Collector Based on Wind-induced Vibration Effect

在新型环境能量收集技术领域,风能和压电能量收集已成为一个研究热点,通过利用风能转化为振动能量,即风致振动效应是一个新的研究方向。为给风致振动效应的压电能量收集器的研究和应用提供参考,综合分析中外基于风致振动效应的压电能量收集器的研究现状和发展趋势。结果表明,风能到振动能量的转化过程主要以颤振、驰振和共振腔型的风致振动能量为主,振动能量到电能的转化过程以压电效应为主,磁电和摩擦发电为辅,对于要求高功率密度和高发电能量的场所,以共振腔型风致振动能量收集为主要的发展趋向。

In the field of new environmental energy harvesting technology,wind energy and piezoelectric energy harvesting have become a research hotspot.Converting wind energy into vibration energy is a new research direction of piezoelectric energy.The research status and development trend of piezoelectric energy collector based on wind-induced vibration were analyzed.It was found that the conversion process of wind energy to vibration energy was based mainly on flutter,pool vibration,and resonance cavity type wind-induced vibration energy.The conversion of vibration energy into electrical energy was due mainly to piezoelectric effect,followed by magnetoelectricity and frictional power generation.For the places where high power density and high power generation energy are required,the technical development shall focus on the collection of resonant cavity wind-induced vibration energy.