Affordable Access

deepdyve-link
Publisher Website

Strategies of Maximum Power Point Tracking for Sub-mW Benthic Microbial Fuel Cells

Authors
  • CAPITAINE, Armande
  • Pillonnet, Gaël
  • ALLARD, Bruno
Publication Date
Dec 01, 2019
Identifiers
DOI: 10.1166/jolpe.2019.1620
OAI: oai:HAL:hal-02526202v1
Source
HAL-Descartes
Keywords
Language
English
License
Unknown
External links

Abstract

Benthic microbial fuel cells (MFCs) are promising alternatives to conventional batteries for powering underwater low-power sensors. Regarding performances (10's W at 100's mV for cm 2-scale electrodes), an electrical interface is required to maximize the harvested energy and boost the voltage. Because the MFCs electrical behavior fluctuates, it is common to refer to maximum power point tracking (MPPT). Using a sub-mW flyback converter, this paper compares the benefit of different MPPT strategies: either by maximizing the energy at the converter input or at the converter output , or by fixing the MFC operating point at its nominal maximum power point. A practical flyback has been validated and experimentally tested for these MPPT options showing a gain in efficiency in certain configurations. The results allow determining a power budget for MPPT controllers that should not exceed this gain. Eventually, considering typical MFC fluctuations, avoiding any MPPT controller by fixing the converter operating parameters may offer better performances for sub-mW harvesters.

Report this publication

Statistics

Seen <100 times