Finite element analysis of combined magnetoelectric- electrodynamic vibration energy converter

[摘要] In this paper we report on the design and optimization of a novel combined vibration energy harvester based on the use of electrodynamic and magnetoelectric (ME) principles to increase the energy outcome of an electrodynamic harvester without significantly increasing its size. Thereby the most important aspect is the dependence of magnetic flux variation on design parameters, as is it is the decisive effect for energy conversion. Magnetic circuit form and magnetization are optimized for maximizing energy outcome. We conclude that better magnetic flux variation is reached for a magnetic circuit formed with two magnets stacked one within the other using the same magnetization. Results illustrate that the use of combined converter enables to enhance the performance of simple electrodynamic or ME converter.

[发布机构] Chai. for Measurement and Sensor Technology, Technische Universität Chemnitz, Reichenhainer Strae 70, Chemnitz; 09126, Germany^1;Laboratory of Electromechanical Systems, National Engineering School of Sfax, University of Sfax, Route de Soukra km 4, Sfax; 3038, Tunisia^2

[效力级别] 能源学

[关键词] Design and optimization;Design parameters;Flux variation;Vibration energies;Vibration energy harvesters