Design and optimization of a wideband impact mode piezoelectric power generator
Design and optimization of a wideband impact mode piezoelectric power generator
复制标题
DOI：
10.1016/j.ceramint.2016.01.082
复制
发表时间：
2016-05
影响因子：
5.2
通讯作者：
A. A. Basari-A.;S. Hashimoto;B. Homma;H. Okada;H. Okuno;S. Kumagai
中科院分区：
文献类型：
--
作者：
A. A. Basari-A.;S. Hashimoto;B. Homma;H. Okada;H. Okuno;S. Kumagai
本文提出了一种采用圆形压电陶瓷作为能量转换器的冲击型压电发电机的新设计，该发电机能够在宽带宽范围内工作。评估结果表明，通过实施所谓的间接冲击配置，可以优化发电机的输出。为了实现这种类型的配置，在压电陶瓷和撞击结构之间放置了一个垫片。在一定的基极激励频率下，该配置的输出效率提高到直接冲击配置的4.3倍左右。此外，还证明了指定的发电机能够在120秒内从移动车辆的振动中产生高达约1.57 mJ的电能。
This paper proposes a new design of an impact mode piezoelectric power generator that is able to operate in a wide frequency bandwidth by using a round piezoelectric ceramic as the energy converter. The evaluation results show that the output of the power generator can be optimized by implementing a so-called indirect impact configuration. To realize this type of configuration, a shim plate is placed between the piezoelectric ceramic and the hitting structure. At a certain base excitation frequency, the output efficiency of this configuration increases to about 4.3 times that of the direct impact configuration. Furthermore, it is demonstrated that the designated power generator is able to generate electric energy up to approximately 1.57 mJ within 120 s from the vibration of a moving vehicle.