Dynamic electrical reconfiguration for improved capacitor charging in microbial fuel cell stacks

Papaharalabos, G., Greenman, J., Stinchcombe, A., Horsfield, I., Melhuish, C. and Ieropoulos, I. (2014) Dynamic electrical reconfiguration for improved capacitor charging in microbial fuel cell stacks. Journal of Power Sources, 272. pp. 34-38. ISSN 0378-7753 Available from: http://eprints.uwe.ac.uk/28907

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Publisher's URL: http://dx.doi.org/10.1016/j.jpowsour.2014.07.187

Abstract/Description

A microbial fuel cell (MFC) is a bioelectrochemical device that uses anaerobic bacteria to convert chemical energy locked in biomass into small amounts of electricity. One viable way of increasing energy extraction is by stacking multiple MFC units and exploiting the available electrical configurations for increasing the current or stepping up the voltage. The present study illustrates how a real-time electrical reconfiguration of MFCs in a stack, halves the time required to charge a capacitor (load) and achieves 35% higher current generation compared to a fixed electrical configuration. This is accomplished by progressively switching in-parallel elements to in-series units in the stack, thus maintaining an optimum potential difference between the stack and the capacitor, which in turn allows for a higher energy transfer.

Item Type:Article
Uncontrolled Keywords:MFC stack, capacitor charging, dynamic electrical reconfiguration, switch box, passive harvesting
Faculty/Department:Faculty of Environment and Technology > Department of Engineering Design and Mathematics
ID Code:28907
Deposited By: B. Jones
Deposited On:23 May 2016 10:56
Last Modified:23 May 2016 10:56

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