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|dc.identifier.citation||Chiang Mai Journal of Science 35, 1 (January 2008),212-220||en_US|
|dc.description||The Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science are welcomed except in areas such as agriculture, engineering and medical science which are outside the scope of the Journal. Currently, we focus on manuscripts in biology, chemistry, physics, materials science and environmental science. Papers in mathematics statistics and computer science are also included but should be of an applied nature rather than purely theoretical. Manuscripts describing experiments on humans or animals are required to provide proof that all experiments have been carried out according to the ethical regulations of the respective institutional and/or governmental authorities and this should be clearly stated in the manuscript itself. The Editor reserves the right to reject manuscripts that fail to do so.||en_US|
|dc.description.abstract||The Polymer electrolyte membrane fuel cell (PEMFC) is a high potential alternative energy to apply for the automotive application due to its advantages such as clean energy source and compact size. To achieve high performance, the amount of water content in PEMFC should be in the suitable range that is adequate to hydrate membrane but not disturb the transportation of the reactant gas. Because of the difficulty to monitor the water content in PEMFC and limitation of the hardware installation, this research proposed the new technique to predict the water content in PEMFC via the state estimation. The concept of extended Luenberger observer is applied to estimate the water content. The membrane water content is calculated from the relation of membrane resistance and the amount of water in each channel is calculated from the mass balance. The simulation results of proposed method compared with that of open-loop observer are presented. From the simulation, the extended Luenberger observer can eliminate the offset while the open-loop observer can not.||en_US|
|dc.publisher||Faculty of Science, Chiang Mai University||en_US|
|dc.subject||PEM fuel cell||en_US|
|dc.title||Estimation of Water Content in PEM Fuel Cell||en_US|
|Appears in Collections:||CMUL: Journal Articles|
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