current density distribution mapping in pem fuel cells as an instrument for operational measurements电流密度分布映射在pem燃料电池作为操作的工具测量.pdfVIP

Energies 2010, 3, 770-783; doi:10.3390/en3040770 OPEN ACCESS energies ISSN 1996-1073 /journal/energies Article Current Density Distribution Mapping in PEM Fuel Cells as An Instrument for Operational Measurements Martin Geske *, Maik Heuer, Günter Heideck and Zbigniew A. Styczynski Otto-von-Guericke University Magdeburg, Chair Electric Power Networks and Renewable Energy Sources, Universitaetsplatz 2, D-39106 Magdeburg, Germany; E-Mails: maik.heuer@ovgu.de (M.H.); guenter.heideck@ovgu.de (G.H.); sty@ovgu.de (Z.A.S.) * Author to whom correspondence should be addressed; E-Mail: martin.geske@ovgu.de; Tel.: +49-391-4090-350; Fax: +49-391-4090-370. Received: 3 February 2010 / Accepted: 23 February 2010 / Published: 14 April 2010 Abstract: A newly developed measurement system for current density distribution mapping has enabled a new approach for operational measurements in proton exchange membrane fuel cells (PEMFC). Taking into account previously constructed measurement systems, a method based on a multi layer printed circuit board was chosen for the development of the new system. This type of system consists of a sensor, a special electronic device and the control and visualization PC. For the acquisition of the current density distribution values, a sensor device was designed and installed within a multilayer printed circuit board with integrated shunt resistors. Varying shunt values can be taken into consideration with a newly developed and eval