• The Journal of Society for e-Business Studies
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• v.18 no.1
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• pp.71-95
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• 2013

This study aims to validate the cost of building the infrastructure to commercialize online electric vehicles. For that purpose, we probe the cost to construct the necessary infrastructure for online electric vehicles regarding Seoul area public bus transit. OLEV and PEV are considered as alternative electric vehicle schemes, and each of them has their own cons and pros in terms of rechargeable battery cost and charger cost. An optimization model which minimizes the cost to install online electric bus feeding devices is proposed in order to compare the total costs of the two alternative schemes. We developed a Mixed Integer Programming model to locate the feeding devices of several different lengths at each bus stops. Furthermore, we implemented a computer simulator to obtain the parameters which will be used in the MIP model and a Web-based system which determines the optimal location of infrastructure for the whole city area from a result of the MIP model. The cost comparison result shows that the total cost of OLEV is cheaper than that of PEV considering the real data of Seoul area public transit, and, as a result, confirms the feasibility of the commercialization of OLEV.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.1059-1060
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• 2011

녹색 성장을 위한 전기 자동차 실용화에 대한 다양한 방법들이 제시되고 있다. 이를 효과적으로 운영 관리 하기 위한 시스템들이 개발되고 있다. 기존 연구는 무선 급집전 전기 자동차와 인프라의 특성을 반영하고 접근 편의성에 어려움이 있다. 본 연구에서는 한국과학기술원에서 연구개발 중인 OLEV 시스템을 근거리에서 운영관리 하기 위한 설계를 제안한다. 무선 인트라넷 환경을 구축함을 통해 이동하는 차 안에서 차량의 상태와 동작 중인 충전 인프라의 상태를 함께 관제할 수 있도록 하였다. 이동성과 개인 사용성을 위해 모바일 기기를 이용하여 관리의 유용성과 일반인들의 전기 자동차에 대한 이해를 향상시켰다. 시스템의 유용성을 입증하기 위해 서울대공원 코끼리 전기열차와 한국과학기술원 문지 캠퍼스에서 주행 실험을 수행하였다.

• Journal of Magnetics
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• v.18 no.2
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• pp.105-110
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• 2013

The design model and key parameters of the material design for the control of induced magnetic flux at the near-field and efficient power transfer in a modified wireless power transfer (WPT) system with a large air gap of wireless electric vehicles were investigated through analytical simulations for magnetic vector and time-domain transient analysis. Higher saturation magnetic core with low core loss induced a stronger vertical magnetic field by the W-type primary coil in the WPT system with a gap of 20 cm at 20 kHz, which is shown from the vector potentials of the magnetic induction. The transient analysis shows that the higher magnetic fluxes through the pick-up cores lead to a linear increment of the alternating voltage with a sinusoidal waveform in the non-contact energy transfer system.