Masaaki Izumi
University of Kitakyushu
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Publication
Featured researches published by Masaaki Izumi.
international conference on intelligent robotics and applications | 2016
Daiki Nagata; Yuji Gotoh; Ryota Naganoma; Masaaki Izumi
A polymer electrolyte fuel cell (PEFC) is the clean energy converters, it is developed as a power supply for electric vehicle. In order to raise the power generation efficiency of PEFC, it is important to know the power generation state inside MEA (membrane electrode assembly). In this paper, an measurement method for monitoring the distribution of the power generation current in the MEA of PEFC from static magnetic field around the fuel cell is investigated. The inverse problem analysis of the power generation current distribution in the MEA using 3D finite element method is examined, and the effectiveness of this method is investigated.
AIP Advances | 2016
Takaaki Nara; Masanori Koike; Shigeru Ando; Yuji Gotoh; Masaaki Izumi
In this paper, we propose novel inversion methods to estimate defects or localized current anomalies in membrane electrode assemblies (MEAs) in polymer electrolyte fuel cells (PEFCs). One method is an imaging approach with L1-norm regularization that is suitable for estimation of focal anomalies compared to Tikhonov regularization. The second is a complex analysis based method in which multiple pointwise current anomalies can be identified directly and algebraically from the measured magnetic flux density.
Fuel Cell Seminar and Exposition | 2009
Masaaki Izumi; Yuji Gotoh; Takayuki Yamanaka
Archive | 1998
Masaaki Izumi; Kazutoshi Murata; Naoyuki Nishimura; Masateru Shimozu; 正輝 下津; 和俊 村田; 政明 泉; 直之 西村
Materials Transactions | 2012
Tomoaki Katou; Yuji Gotoh; Norio Takahashi; Masaaki Izumi
Journal of The Ceramic Society of Japan | 1999
Kazutoshi Murata; Masaaki Izumi; Masateru Shimotsu
ECS Transactions | 2015
Ryu Yamanashi; Yuji Gotoh; Masaaki Izumi; Takaaki Nara
Journal of The Ceramic Society of Japan | 2010
Masaaki Izumi; Noboru Sasahara
Journal of The Ceramic Society of Japan | 1999
Masaaki Izumi; Masateru Shimotsu
ECS Transactions | 2016
Takuya Kitabayashi; Yuji Gotoh; Masaaki Izumi; Takaaki Nara