Electromagnetic Energy Harvester Targeting Wearable and Biomedical Applications
This work presents a miniaturized electromagnetic energy harvester (EMEH) based on two coils moving in a head-to-head permanent magnet tower. The two coils are separated by a set distance so that the applied force moves the EMEH from one equilibrium position to another. In this configuration, the ha...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-04-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/24/7/2311 |
| _version_ | 1797211956907606016 |
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| author | Gabriel Digregorio Jean-Michel Redouté |
| author_facet | Gabriel Digregorio Jean-Michel Redouté |
| author_sort | Gabriel Digregorio |
| collection | DOAJ |
| description | This work presents a miniaturized electromagnetic energy harvester (EMEH) based on two coils moving in a head-to-head permanent magnet tower. The two coils are separated by a set distance so that the applied force moves the EMEH from one equilibrium position to another. In this configuration, the harvester produces energy in two different working modes: when a force is applied to the moving part or when an external random acceleration is applied to the whole system. A custom test bench has been designed to characterize the behavior of this energy harvester under a variety of conditions encountered in wearable applications. Notably, at 10 Hz and 1.32 g RMS acceleration, our inertial EMEH demonstrates its capability to sustain a consistent output power of 1696 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula>W within a total volume of 22.39 cm<sup>3</sup>, showcasing its efficiency in environments with erratic stimuli typical of wearable and biomedical applications. The presented EMEH is compared with reported inertial EMEH structures to extract its design limitations as well as future improvements, situating the present work in a comprehensive state-of-the-art and defining a generic performance target for biomedical and wearable applications. |
| first_indexed | 2024-04-24T10:34:44Z |
| format | Article |
| id | doaj.art-8d1671be310847dd88ceb20c67f0fc4f |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-24T10:34:44Z |
| publishDate | 2024-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-8d1671be310847dd88ceb20c67f0fc4f2024-04-12T13:26:45ZengMDPI AGSensors1424-82202024-04-01247231110.3390/s24072311Electromagnetic Energy Harvester Targeting Wearable and Biomedical ApplicationsGabriel Digregorio0Jean-Michel Redouté1Department of Electrical Engineering, ULiège University, 4000 Liège, BelgiumDepartment of Electrical Engineering, ULiège University, 4000 Liège, BelgiumThis work presents a miniaturized electromagnetic energy harvester (EMEH) based on two coils moving in a head-to-head permanent magnet tower. The two coils are separated by a set distance so that the applied force moves the EMEH from one equilibrium position to another. In this configuration, the harvester produces energy in two different working modes: when a force is applied to the moving part or when an external random acceleration is applied to the whole system. A custom test bench has been designed to characterize the behavior of this energy harvester under a variety of conditions encountered in wearable applications. Notably, at 10 Hz and 1.32 g RMS acceleration, our inertial EMEH demonstrates its capability to sustain a consistent output power of 1696 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula>W within a total volume of 22.39 cm<sup>3</sup>, showcasing its efficiency in environments with erratic stimuli typical of wearable and biomedical applications. The presented EMEH is compared with reported inertial EMEH structures to extract its design limitations as well as future improvements, situating the present work in a comprehensive state-of-the-art and defining a generic performance target for biomedical and wearable applications.https://www.mdpi.com/1424-8220/24/7/2311energy harvestingcharacterizationinertial electromagnetic energy harvesters |
| spellingShingle | Gabriel Digregorio Jean-Michel Redouté Electromagnetic Energy Harvester Targeting Wearable and Biomedical Applications Sensors energy harvesting characterization inertial electromagnetic energy harvesters |
| title | Electromagnetic Energy Harvester Targeting Wearable and Biomedical Applications |
| title_full | Electromagnetic Energy Harvester Targeting Wearable and Biomedical Applications |
| title_fullStr | Electromagnetic Energy Harvester Targeting Wearable and Biomedical Applications |
| title_full_unstemmed | Electromagnetic Energy Harvester Targeting Wearable and Biomedical Applications |
| title_short | Electromagnetic Energy Harvester Targeting Wearable and Biomedical Applications |
| title_sort | electromagnetic energy harvester targeting wearable and biomedical applications |
| topic | energy harvesting characterization inertial electromagnetic energy harvesters |
| url | https://www.mdpi.com/1424-8220/24/7/2311 |
| work_keys_str_mv | AT gabrieldigregorio electromagneticenergyharvestertargetingwearableandbiomedicalapplications AT jeanmichelredoute electromagneticenergyharvestertargetingwearableandbiomedicalapplications |