A wide-band electromagnetic energy harvester

KURT E., Issimova A., Medetov B.

Energy, cilt.277, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 277
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1016/j.energy.2023.127693
  • Dergi Adı: Energy
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Applied Science & Technology Source, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Communication Abstracts, Computer & Applied Sciences, Environment Index, INSPEC, Metadex, Pollution Abstracts, Public Affairs Index, Veterinary Science Database, Civil Engineering Abstracts
  • Anahtar Kelimeler: Electromagnetic, Harvester, Wide band, Permanent magnet, Power, Recovery
  • Gazi Üniversitesi Adresli: Evet

Özet

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.