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차량용 연료전지 스택의 안정적 반응 가스 공급을 위한 중앙 유동 분배기 형상 설계에 관한 수치적 연구
정혜미(Jung, Hye-Mi),엄석기(Um, Suk-Kee),정희석(Jeong, Hui-Seok),이성호(Lee, Seong-Ho),서정도(Seo, Jeong-Do),손영진(Son, Yeong-Jin) 한국신재생에너지학회 2008 한국신재생에너지학회 학술대회논문집 Vol.2008 No.05
In this study, two types of central flow distributor designs are presented and compared to obtain the optimal compact design which has the least flow resistance and the uniform flow distribution in a vehicular fuel cell stack. For effective and reliable prediction on the thermo-flow characteristics of the reactants flow over the entire fuel cell stack domain, open channel flow in the bipolar plates of the power generating cells were simulated by applying a simplified flow resistance model with an empirical porous concept. A number of case studies were performed to figure out an optimal configuration of a central flow distributor device in terms of the time-dependent thermo-flow behavior and load-dependent flow distribution. The results showed that the stable and load-independent thermo-flow uniformity is very design specific, which is closely associated with the design of central manifolding devices in order to achieve the enhanced volumetric power density and the reliable long-lasting operating of fuel cells.
함상환(Sang-Hwan Ham),김광수(Kwang-Soo Kim),이중우(Joong-Woo Lee),양승국(Seung-Kook Yang),엄석기(Suk-Kee Um),이주(Ju Lee) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
This paper presents the thermal characteristics of interior permanent magnet synchronous motor (IPMSM) for traction. In other to be a reliable traction system, electromagnetically and thermally characteristics of IPMSM are derived correctly, First of all, electromagnetic characteristics of the IPMSM at maximum torque and rated speed are calculated for estimating heat sources. Using results of electromagnetic behavior, thermal analysis of IPMSM is derived.
이주(Ju Lee),이진주(Jin-Ju Lee),장주원(Joo-Won Jang),손영규(Young-Kyu Son),곽재호(Jea-Ho Kwak),구대현(Dae-Hyun Koo),엄석기(Suk-Kee Um),이동명(Dong-Myong Lee),김상욱(Sang-Uk Kim) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
In the development of motor for hybrid electric vehicle (HEV), torque and power density should be considered as a priority. Over the past several years interior permanent magnet synchronous motor (IPMSM) have emerged as the best option to satisfy demands of traction motor and it is used in production HEVs by Toyota, Honda, and so on. This paper presents recent technology trends of traction motor vehicle.