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Układy do pozyskiwania energii elektrycznej małej mocy

Górski Krzysztof, Kozieł Mateusz, Zawadzki Jan, Rosińska Karolina

Przegląd Elektrotechniczny

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2022

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R. 98, nr 2

91--95

PL

W pracy przedstawiono przegląd literatury dotyczącej pozyskiwania energii znajdującej się w otoczeniu (energy harvesting- EH). Skupiono się na pozyskiwaniu energii EH ze źródeł małej mocy, co powoduje, że występują ograniczenia w stosowaniu harvestingu do urządzeń elektronicznych, które charakteryzują się niewielkim poborem prądu. Dokonano przeglądu fabrycznych rozwiązań układów scalonych wykorzystujących komponenty do pozyskiwania energii z otoczenia i jednoczesnego zasilania urządzeń elektronicznych małej mocy. Zaproponowano koncepcję wykorzystania pozyskiwania energii EH do zastosowań militarnych.

EN

The paper reviews the literature on energy harvesting in the environment (energy harvesting - EH). The focus was on obtaining EH energy from low-power sources. As a result, there are limitations in using harvesting for electronic devices that are characterized by a low power consumption. The factory solutions of semiconductor systems using components for obtaining energy from the environment were reviewed. The concept of using EH energy for military applications was proposed

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Experimental validation of equivalent circuit modelling of the piezo-stripe harvester attached to the sfsf rectangular plate

Koszewnik Andrzej

Acta Mechanica et Automatica

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2020

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Vol. 14, no. 1

8--15

EN

Plate-like structures with attached piezo-patch elements are widely used in marine, aerospace and civil infrastructure applications to power small devices with low power demand or used for monitoring of vibration structures. In order to assess the feasibility of an energy harvesting system to generate power output from a harvester, an accurate electromechanical model of the piezo-patch harvester attached to a 2D structure in modal coordinates is required. Taking into account this fact, this study is focused on the analysis of the piezoharvester orientations on the SFSF (Simply Supported-Free-Simply Supported-Free) plate undergoing forced dynamic excitation. The results obtained from the numerical analysis of a smart structure led to determining quasi-optimal piezo-harvester location on the structure, and next, to determining a multi-mode representation of the equivalent circuit model. The experimental set-up carried out on the lab stand properly verified the parameters of the ECM model. Finally, the proposed approach can be used for the structural health monitoring of vibration of some 2D mechanical structures like the front wall of a dishwasher.

3

Modelling and testing of the piezoelectric beam as energy harvesting system

Koszewnik A., Wernio A.

Acta Mechanica et Automatica

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2016

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Vol. 10, no. 4

291--295

EN

The paper describes modelling and testing of the piezoelectric beam as energy harvesting system. The cantilever beam with two piezo-elements glued onto its surface is considered in the paper. As result of carried out modal analysis of the beam the natural frequencies and modes shapes are determined. The obtained results in the way mentioned above allow to estimate such location of the piezoactuator on the beam where the piezo generates maximal values of modal control forces. Experimental investigations carried out in the laboratory allow to verify results of natural frequencies obtained during simulation and also testing of the beam in order to obtain voltage from vibration with help of the piezo-harvester. The obtained values of voltage stored on the capacitor 𝐶0 shown that the best results are achieved for the beam excited to vibration with third natural frequency, but the worst results for the beam oscillating with the first natural frequency.