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A comparison of methods to extract the coupling coefficient of electromagnetic vibration energy harvesters by measurements

Title data

Mösch, Mario ; Fischerauer, Gerhard:
A comparison of methods to extract the coupling coefficient of electromagnetic vibration energy harvesters by measurements.
In: Micromachines. Vol. 10 (December 2019) Issue 12 . - 14 S.
ISSN 2072-666X
DOI: https://doi.org/10.3390/mi10120826

Official URL: Volltext

Abstract in another language

Vibration energy harvesters transform environmental vibration energy into usable electrical energy. The transformation is only possible because of a coupling between the mechanical part of the energy harvester and the electric circuit. This paper compares several measurement
methods to determine the electromagnetic coupling coefficient. These methods are applied to various implementations of an energy harvester and the results are compared with one another and with simulation data by analyzing the magnetic flux. The average deviation between the measurement methods and the simulation data in our study was 5%. This good agreement validates the methods. Based on this, we recommend determination of the coupling coefficient and the optimum load resistance for maximum power harvesting on the basis of simulations and the open circuit method, because this procedure leads to the shortest measurement times.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Vibration energy harvesting; electromagnetic; coupling; measurement; simulation;
microgenerator
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology
Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology > Chair Measurement and Control Technology - Univ.-Prof. Dr.-Ing. Gerhard Fischerauer
Profile Fields > Emerging Fields > Energy Research and Energy Technology
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Graduate Schools > TAO-Graduiertenkolleg Energieautarke Gebäude
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 02 Dec 2019 09:09
Last Modified: 02 Dec 2019 09:09
URI: https://eref.uni-bayreuth.de/id/eprint/53451