A wide-band electromagnetic energy harvester
Kurt E. Issimova A. Medetov B.
15 August 2023Elsevier Ltd
Energy
2023#277
A basic-configured electromagnetic energy harvester is proposed. It operates with varying magnetic induction at the center of a coil. Two magnets are located stable at the center of a coil having a spacer between them. Harvester does not give any elasticity problem with spring-free structure. The importance of coefficient of recovery is explained in theory of harvesters for the first time to our knowledge. The airgap formed by the spacer varies due to the vibration and this generates an electromotive force. It is proven that the proposed harvester generates a voltage amount Vrms = 2.41 mV and an electrical power P = 17 μW under the vibration frequency f = 60 Hz with 1 mm displacement. It corresponds to power density of 0.358 μW/cm3. Output voltages show a maxima with Vrms = 2.41 mV under R = 0.35 Ohm with a decaying trend with frequency. For R = 0.7 Ohm, higher voltages can be generated till 650 Hz. It is a superiority that this device has a very wide power harvesting regime from 2 Hz to 1.5 KHz. With such a wide characteristics, it can be used for many applications to harvest continuous energy from random vibrating ambient sources with its cheap and basic structure.
Electromagnetic , Harvester , Permanent magnet , Power , Recovery , Wide band
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Department of Electrical and Electronics Engineering, Technology Faculty, Gazi University, Beşevler, Ankara, TR-06500, Turkey
Al-Farabi Kazakh National University, Almaty, Kazakhstan
Saken Seifullin Kazakh Agrotechnical University, Nur-Sultan, Kazakhstan
Department of Electrical and Electronics Engineering
Al-Farabi Kazakh National University
Saken Seifullin Kazakh Agrotechnical University
10 лет помогаем публиковать статьи Международный издатель
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