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Design, modeling and optimization of an m-shaped variable reluctance energy harvester for rotating applications
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för elektronikkonstruktion.ORCID-id: 0000-0003-3222-7165
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för elektronikkonstruktion.ORCID-id: 0000-0002-8382-0359
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för elektronikkonstruktion.ORCID-id: 0000-0001-9572-3639
2019 (engelsk)Inngår i: Energy Conversion and Management, ISSN 0196-8904, E-ISSN 1879-2227, Vol. 195, s. 1280-1294Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The variable reluctance principle can be used to convert rotational kinetic energy into electrical energy, creating a Variable Reluctance Energy Harvester (VREH) based on electromagnetic induction. This can be used to implement self-sustaining wireless sensors in rotating applications. In this paper, we present and investigate a novel design of a VREH with high volumetric power density that targets low-speed rotating applications. The design uses an m-shaped pole-piece and two opposing magnets. We theoretically analyze key design parameters that influence the VREH’s output power, and relate these parameters to geometrical design factors of the proposed structure. Key design factors include the coil height, the permanent magnet height and the tooth height. A method based on numerical simulations is introduced, enabling to determine the optimal geometrical dimensions of the proposed structure under given size-constraints. The results demonstrate that the method leads to optimal structure configurations, which has been evaluated for different cases and is verified experimentally. Good agreement between numerical simulations and experiments are reported with deviations in output power estimation below 3%. The optimized m-shaped VREH, moreover, provides output power levels sufficient for wireless sensor operation, even in low-speed rotating applications.

sted, utgiver, år, opplag, sider
2019. Vol. 195, s. 1280-1294
Emneord [en]
Energy harvesting, Rotational energy, Variable reluctance, Power density, Design method, Sensor systems
HSV kategori
Identifikatorer
URN: urn:nbn:se:miun:diva-36250DOI: 10.1016/j.enconman.2019.05.082ISI: 000482244300099Scopus ID: 2-s2.0-85066501919OAI: oai:DiVA.org:miun-36250DiVA, id: diva2:1320512
Prosjekter
SMART (Smarta system och tjänster för ett effektivt och innovativt samhälle)
Forskningsfinansiär
Knowledge Foundation, ASIS 20140323Vinnova, 2017-03725Tilgjengelig fra: 2019-06-05 Laget: 2019-06-05 Sist oppdatert: 2020-01-29bibliografisk kontrollert

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