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

Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review

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.

Original languageEnglish
Title of host publication2023 20th International Multi-Conference on Systems, Signals and Devices, SSD 2023
Number of pages6
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers Inc.
Publication date2023
Pages553-558
ISBN (print)979-8-3503-3257-5
ISBN (electronic)979-8-3503-3256-8
DOIs
Publication statusPublished - 2023
Externally publishedYes
Event20th International Multi-Conference on Systems, Signals and Devices - SSD 2023 - Mahdia, Tunisia
Duration: 20.02.202323.02.2023
Conference number: 20
https://ssd-conf.org/learnmore/SSD%2723

Bibliographical note

Funding Information:
The authors would like to thank the German Academic Exchange Service (DAAD) for their financial support work within the project: “Strengthening Practice-Oriented Education Program for the Automotive Industry (STEP)”.

Publisher Copyright:
© 2023 IEEE.

    Research areas

  • Boost rectifier, Electromagnetic converter (EM), Energy Harvesting, Fast charging, Single Stage, Voltage multiplier (VM)
  • Informatics

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