Fast Supercapacitor Charging for Electromagnetic Converter Systems by Self Powered Boost Circuit

Publikation: Beiträge in SammelwerkenAufsätze in KonferenzbändenForschungbegutachtet

Authors

Electromagnetic energy harvesting (EM) is an interesting method for obtaining energy from vibration sources to power autonomous wireless sensor systems. This is reached with the help of energy management circuits that can be based on voltage multipliers circuits or boost rectifier circuits. These energy management structures aim to raise the voltage of the EM converter to a level that is adequate for the storage element. In this paper, a dual-mode AC/DC circuit for EM is proposed for fast charging of the supercapacitor. The circuit is based on a boost rectifier and a voltage multiplier using discrete elements and without a startup circuit. This structure can work properly with an EM converter generating power in the range of a few μW. The circuit can work under different frequencies and accelerations. In the first step, the proposed circuit store the energy in a supercapacitor in voltage multiplier mode until it reaches 1.9 V. After that, the supercapacitor will supply the ancillary circuit to activate the boost mode based on bidirectional MOSFETs, which reduce the time to charge the supercapacitor. The maximum power consumption of the ancillary circuit is 34 μW. The experimental investigation shows that the system at acceleration ACC = 0.17 g and Freq = 27 Hz is able to charge the supercapacitor by a voltage of 5.41 V in 7 min. The proposed solution helps to enhance the time to charge comparing conventional voltage multiplier structure by 23 min.

OriginalspracheEnglisch
Titel2023 20th International Multi-Conference on Systems, Signals and Devices, SSD 2023
Anzahl der Seiten6
ErscheinungsortPiscataway
VerlagInstitute of Electrical and Electronics Engineers Inc.
Erscheinungsdatum2023
Seiten553-558
ISBN (Print)979-8-3503-3257-5
ISBN (elektronisch)979-8-3503-3256-8
DOIs
PublikationsstatusErschienen - 2023
Extern publiziertJa
Veranstaltung20th International Multi-Conference on Systems, Signals and Devices - SSD 2023 - Mahdia, Tunesien
Dauer: 20.02.202323.02.2023
Konferenznummer: 20
https://ssd-conf.org/learnmore/SSD%2723

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© 2023 IEEE.

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