压电俘能系统基础理论与关键技术研究

项目名称： 压电俘能系统基础理论与关键技术研究

项目编号： No.61471403

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 黄以华

作者单位： 中山大学

项目金额： 98万元

中文摘要： 压电俘能系统可将环境中的振动能转化为电能，为电子系统供电，让电子系统摆脱电池供电的束缚，消除电池对自然环境的污染，符合清洁、环保，绿色的发展方向。在压电俘能系统中，压电俘能器输出的电能是不稳定、无规律的，无法直接为负载供电，需要功率电路对其进行调控，然后再提供给负载。因此。压电俘能系统的各项性能指标强烈地依赖于压电俘能器的特性、压电俘能器与功率电路之间的耦合程度以及后续负载对功率电路的影响程度。本项目将从全系统的角度深入研究压电俘能器高精度理论模型的建模方法，揭示压电俘能器的材料和几何参数与其性能之间的依赖关系，从而为压电俘能器的优化设计提供理论基础；本项目还将研究压电俘能系统内各部分之间相互耦合的基本原理，建立系统级模型，从而找到这些部件之间相互耦合的基本规律，为进一步优化和提高压电俘能系统性能及关键技术问题的解决奠定基础。

中文关键词： 功率电子技术；功率控制；驱动电路

英文摘要： The piezoelectric energy harvesting system can convert the ambient vibration energy into the electric power to provide the power to the electronic system. Therefore it is a clear, green and environmental friendly replacement for batteries. It may enable wireless and portable electronic devices to be completely self-sustaining, then the battery may be eventually removed.Usually, the ambient vibrations are unstable, the outputs of the piezo-harvester are unstable too, so it can not provide the power to the electronic devices directly. The performance of the whole system strongly depends on the performance of the piezo-harvester, the coupling coefficient between the piezo-harvester and the power electronic circuit, and the electrical load. In this proposed project, we will study the method to develop high accuracy model of the piezo-harvester, then the relationships between the performance and the structural and material parameters of the piezo-harvester can be found. Besides, we will investigate how the three key parts interact with each other. We will try to establish a system-level model that can capture not only the behavior of the individual part, but also the coupling interactions among them. With such a system-level model, the nature of the electromechanical coupling of the system can be thoroughly understood and the way to further improve and optimize the performance of piezoelectric energy harvesting system can be found.

英文关键词： power electronics;power control;driving circuit