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Self-powered RPM Sensor using a Single-Anchor Variable Reluctance Energy Harvester with Pendulum Effects
Mid Sweden University, Faculty of Science, Technology and Media, Department of Computer and Electrical Engineering (2023-).ORCID iD: 0000-0003-3222-7165
Mid Sweden University, Faculty of Science, Technology and Media, Department of Computer and Electrical Engineering (2023-).ORCID iD: 0000-0002-8382-0359
Mid Sweden University, Faculty of Science, Technology and Media, Department of Computer and Electrical Engineering (2023-).ORCID iD: 0000-0001-9572-3639
2023 (English)In: ENSsys '23: Proceedings of the 11th International Workshop on Energy Harvesting & Energy-Neutral Sensing Systems, Istanbul Turkiye: Association for Computing Machinery (ACM) , 2023, p. 72-78Conference paper, Published paper (Refereed)
Abstract [en]

The feasibility of energy harvesting as a viable alternative for powering low-energy electronics has been demonstrated through advancements in transduction mechanisms. Energy harvesters incorporating counterweights have gained attention in rotational energy harvesting to develop single-anchored devices with flexible placement and easy installation. In this work, a three-phase variable reluctance energy harvester (VREH) with low torque ripple is combined with a counterweight to facilitate a single-anchored design, specifically targeting low rotational speed applications. The energy harvester is integrated with a low-power sensor system to enable energy-neutral operation. We present the design, implementation, and evaluation of an on-rotor RPM sensor system powered by the single-anchored three-phase VREH. Experimental evaluations on a laboratory test bench demonstrate the system performance under varying conditions, with the ability to supply the sensor system at low speeds achieving, for example, a 3.5 Hz sample rate at a low speed of 3 rpm. Evaluations of the system illustrate that pendulum effects induced by the interaction of the cogging torque and the gravitational torque improve the output power of the harvester under low-speed conditions. This promises for the proposed design to be suitable to power wireless sensors for industrial condition monitoring, providing a flexible solution for energy-neutral sensor systems with reduced installation complexity.

Place, publisher, year, edition, pages
Istanbul Turkiye: Association for Computing Machinery (ACM) , 2023. p. 72-78
Keywords [en]
energy harvesting, electromagnetic transduction, pendulum effect, RPM sensor, self-powered wireless sensor, variable reluctance
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-49981DOI: 10.1145/3628353.3628540ISI: 001147500800011Scopus ID: 2-s2.0-85180126145ISBN: 979-8-4007-0438-3 (print)OAI: oai:DiVA.org:miun-49981DiVA, id: diva2:1815944
Conference
ENSsys '23: Proceedings of the 11th International Workshop on Energy Harvesting & Energy-Neutral Sensing Systems
Funder
VinnovaAvailable from: 2023-11-30 Created: 2023-11-30 Last updated: 2024-02-23Bibliographically approved

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Xu, YeBader, SebastianOelmann, Bengt

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