Modeling and Experimental Investigation of a Periodically Excited Hybrid Energy-Harvesting Generator

被引：7

作者：

Hofmann, Viktor ^{[1
]}

Kleyman, Gleb ^{[1
]}

Twiefel, Jens ^{[1
]}

机构：

[1] Institute of Dynamics and Vibration Research, Leibniz Universität Hannover, Appelstr. 11, Hannover

来源：

Energy Harvesting and Systems | 2015年 / 2卷 / 03期

关键词：

electromagnetic; energy harvester model; non-harmonic oscillation; piezoelectric; transfer matrix method;

D O I：

10.1515/ehs-2014-0043

中图分类号：

学科分类号：

摘要：

In this article the modeling of a broadband energy harvester utilizing piezoelectric and electromagnetic effects for rotational applications is presented. The hybrid energy harvester consists of a one-side-clamped piezoelectric bimorph with a solenoid on the free end and is excited periodically but non-harmonically by magnets that are fixed on a rotating object. To estimate and describe the performance of the energy harvester concept a linear semi-analytical model for the bimorph and the solenoid is developed and then enhanced for non-harmonic system oscillations by decomposing them into their harmonic components. A comparison between the calculated and measurement signals of a prototype device shows great conformity. According to model-based and experimental analysis, the hybrid system has good broadband behavior regarding electric power output. That aspect makes the device a perfect energy-harvesting system for application with highly fluctuating revolution speeds like miniature wind turbines. © 2015 by De Gruyter 2015.

引用

页码：213 / 226

页数：13

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