Double synchronized switch harvesting (DSSH): A new energy harvesting scheme for efficient energy extraction
Double synchronized switch harvesting (DSSH): A new energy harvesting scheme for efficient energy extraction
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DOI：
10.1109/tuffc.912
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发表时间：
2008-10-01
影响因子：
3.6
通讯作者：
Guyomar, Daniel
中科院分区：
文献类型：
--
作者：
Lallart, Mickael;Garbuio, Lauric;Guyomar, Daniel
本文提出了一种利用压电微发电机进行优化能量收集的新技术，称为双同步开关收集（DSSH）。该技术包括对压电元件输出电压的非线性处理。它还集成了一个中间开关级，无论连接到微发电机的负载如何，都能确保最佳的收集功率。文中给出了考虑恒定振动幅度、恒定驱动力或独立提取的理论推导。然后进行了实验测量以验证理论预测。对于连接到微发电机的各种负载，该技术都呈现出恒定的输出功率。此外，与标准能量收集方法相比，使用这种技术获得的提取功率在最大功率输出方面可提高多达500%。还表明这种技术可以对振动阻尼和能量收集之间的权衡进行微调。
This paper presents a new technique for optimized energy harvesting using piezoelectric microgenerators called double synchronized switch harvesting (DSSH). This technique consists of a nonlinear treatment of the output voltage of the piezoelectric element. It also integrates an intermediate switching stage that ensures an optimal harvested power whatever the load connected to the microgenerator. Theoretical developments are presented considering either constant vibration magnitude, constant driving force, or independent extraction. Then experimental measurements are carried out to validate the theoretical predictions. This technique exhibits a constant output power for a wide range of load connected to the microgenerator. In addition, the extracted power obtained using such a technique allows a gain up to 500% in terms of maximal power output compared with the standard energy harvesting method. It is also shown that such a technique allows a fine-tuning of the trade-off between vibration damping and energy harvesting.