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한경희(K.H. Han),이병송(B.S. Lee),백수현(S.H. Baek),권삼영(S.Y. Kwon),박현준(H.J. Park) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
This paper suggests the inductive power collector using electromagnetic induction for railway vehicle such as the PRT(Personal Rapid Transit) system. Some ideas for inductive power collector design to improve the power transfer performance are presented. The inductive power of secondary part is related to amount of linked flux to secondary part by the length of air-gap, which is expected by such a system parameter as leakage reactance and magnetizing reactance. This paper will study for some performance of traditional transformer from equivalent circuit considering leakage reactance
PRT용 Cut core 공극 및 권선위치에 따른 IPT 결합계수 특성
한경희(K.H. Han),이병송(B.S. Lee),권삼영(S.Y. Kwon),박현준(H.J. Park),백수현(S.H. Baek) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.10
The contact-less inductive power transformer (IPT) uses principle of electromagnetic induction. Generally, there were many methods to improve the transfer performance of traditional transformer. But, though the principle of IPT is similar to that of general transformer, it is impossible to apply the methods because of large air-gap. Consequently, many linear numerical formulas for analysis of performance and design of traditional transformer cannot be used in development of IPT. The concept of the IPT for vehicle like PRT (Personal Rapid Transit) system is suggested and some suggestions for power collector(core & winding) design of IPT to improve power transfer performance are presented in this paper. The characteristic of power delivery with these novel methods in designis presented by simulation and examination.
철도용 연료전지 및 유도급전을 이용한 Hybrid system 연구
한경희(K.H. HAN),이병송(B.S. LEE),박현준(H.J. PARK),권삼영(S.Y. KWON),백수현(S.H. BAEK) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.10
Urban air quality, including carbon-dioxide emissions, and national energy security are related issues affecting the rail industry and transportation sector as a whole. They are related by the fact that (in the United States) 97-98% of the energy for the transport sector is based on oil, and more than 60% is imported. A fuelcell locomotive combines the environmental advantages of a catenary-electric locomotive with the higher overall energy efficiency and lower infrastructure costs of a diesel-electric. Catenaryelectric locomotives, when viewed as only one component of a distributed machine that includes an electricity-generating plant and transmission lines, are the least energy-efficient locomotive type. The natural fuel for a fuelcell is hydrogen, which can be produced from many renewable energies and nuclear energy. and thus a hydrogen-fuclcell locomotive will not depend on imported oil for its energy supply. This paper proposes a base models of Hybrid fuel cell/IPT railway vehicle power system, the necessary of this research.
한경희(K.H. Han),장예지(Y.J. Jang),박찬배(C.B. Park),이병송(B.S. Lee),백수현(S.H. Baek) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.4
This study has done for parameter of the improved model of PEM Fuel Cell. When PEM Fuel Cell powered system is operated, performance degradation due to the carbon monoxide poisoning and the activation loss are researched by monitor of activation voltage drop.
한경희(K.H. HAN),이화진(H.J. LEE),이나영(N.Y. LEE),장혜영(H.Y. JANG),이병송(B.Y. LEE),백수현(S.H. BAEK) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.4
A powered system with fuel cell is regarded as a high current and low voltage source. Effects of the loads on the electrical power source are important to optimize the integrated power system. The design parameters of the system should be chosen by taking into account the characteristics of the fuel cell, so the costs of the power system at given operating conditions can be reduced. Furthermore, the dynamics characteristic of the system is crucial to acquire performance in applications, particularly interactions between loads and the fuel cell system. Currently, no integrated simulation has been approached to analyze interrelated effects. Therefore, the dynamic models of power conversion system with a PEM fuel cell that includes the PEM fuel cell stack, DC/DC converter and associated controls is developed. Electric lads for the system are derived by using a power theory that separates a load current into active, reactive, distortion or a mixed current component. Dependency of the DC capacitor on the loads are analyzed.