Water Content Estimation and Control of PEM Fuel Cell Stack and the Individual Cell in Vehicle

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Po Hong

Water Content Estimation and Control of PEM Fuel Cell Stack and the Individual Cell in Vehicle

Po Hong

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English

Springer Verlag, Singapore
18 January 2022

Electrochemistry & magnetochemistry; Materials science; Electrical engineering; Transport technology & trades

Series: Springer Theses

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 the proposed method for searching optimized operating conditions and the water management strategy.

By: Po Hong
Imprint: Springer Verlag, Singapore
Country of Publication: Singapore
Edition: 2022 ed.
Dimensions: Height: 235mm, Width: 155mm,
Weight: 418g
ISBN: 9789811688133
ISBN 10: 9811688133
Series: Springer Theses
Pages: 149
Publication Date: 18 January 2022
Audience: Professional and scholarly , Undergraduate
Format: Hardback
Publisher's Status: Active

Introduction.- Modeling of water content in MEA for the PEM fuel cell.- Approach to online AC impedance measurement of the fuel cell.- Water content estimation of the PEM fuel cell.- Water management strategy for the PEM fuel cell.

Po Hong received his Ph. D degree from the Tsinghua University in 2019, and his B. S. degree from the Tsinghua University in 2013, all in automotive engineering. He holds 26 Chinese patents, 1 US patent and 2 PCT application, and published 12 journal and conference papers. He received the Excellent Ph. D Thesis Paper Award and SHUIMU Scholar Award in 2019.He studies at Tsinghua University as a post doctor from 2019 until now.