Optimization of the output power of cantilever piezoelectric vibration energy harvesting

被引：0
作者：
机构：
[1] College of Electronic Science and Technology, Dalian University of Technology, Dalian
[2] College of Electrical Engineering, Dalian University of Technology, Dalian
来源：
Bai, F.-X. (baifx63@163.com) | 1600年 / Chinese Institute of Electronics卷 / 42期
关键词：
Energy harvesting; Inductor; Output power; Piezoelectric cantilever;
D O I：
10.3969/j.issn.0372-2112.2014.05.008
中图分类号：
学科分类号：
摘要：
In order to solve the problem of low output power of piezoelectric energy harvesting systems caused by less energy and wide band of ambient vibration, the method of optimizing the output power of cantilever piezoelectric energy harvesting system with the parallel or series inductance are explored and the influence of different parallel or series inductance to the output power is analyzed. Since the frequency of piezoelectric cantilever is low, and the matching inductor value is large, lossless simulated inductor is used in experiment. The theoretical analysis and experiment results show that the maximum output power of resonance can also be obtained at the deviating points with different matching inductance corresponding to different excitation frequencies, which broadens the operating frequency band and improves the total energy harvesting energy level of the system. When the excitation frequency is 0.8 or 1.2 times of the resonant frequency, the maximum output power with parallel or series inductance is 26.4 and 18.2 times of that of the purely resistive load.
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页码：883 / 889
页数：6
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