书目名称 | Water Content Estimation and Control of PEM Fuel Cell Stack and the Individual Cell in Vehicle |
编辑 | Po Hong |
视频video | |
概述 | Develops a model of water content in MEA to effectively quantify its influence on performance.Establishes the approach to online AC impedance measurement of the individual cell and fuel cell stack.Con |
丛书名称 | Springer Theses |
图书封面 |  |
描述 | .This book focuses on water content estimation and control of the PEM fuel cell stack and the individual cell in vehicle. Firstly, the mathematical connection between polarization curve and equivalent circuit model proves importance of MEA and its feasibility to study water content. Optimizing structure of MEA realizes the internal water content recirculation of a fuel cell and improves its performance under middle or lower current density. The influence of water content on performance of MEA is quantified, and variation of equivalent circuit model is an excellent indicator of water content. Secondly, the comprehensive online AC impedance measurement method is put forward, including current excitation method, weak voltage and current signal processing method, and method for analyzing measurement error, and experiment validates measurement accuracy. The high-frequency impedance and statistical characteristic are proposed as indicator of water content. Finally, the dynamic model of theair supply system of a fuel cell engine is established and the closed-loop control of the air supply system and the water content estimation are decoupled. The experiment on a fuel cell system validates |
出版日期 | Book 2022 |
关键词 | PEM fuel cell; Membrane electrode assembly; AC impedance; Water content estimation; Water management str |
版次 | 1 |
doi | https://doi.org/10.1007/978-981-16-8814-0 |
isbn_softcover | 978-981-16-8816-4 |
isbn_ebook | 978-981-16-8814-0Series ISSN 2190-5053 Series E-ISSN 2190-5061 |
issn_series | 2190-5053 |
copyright | Tsinghua University Press 2022 |