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정승민(Jung Seungmin) 한국데이타베이스학회 2010 Journal of information technology applications & m Vol.17 No.2
The success of new product is a key factor for getting competitive advantages. Marketing research has been investigating marketing capability, manufacturing technical capability, cross-functional integration, market knowledge competence, and competitive environment as the key success factors of new product advantage. Recently, the role of IT capability in enhancing new product advantage is assumed in the literature. However, the empirical studies on the role of IT capability are lacking. The purpose of this study is to identify the effects of IT capability on new product competitive advantages and the relationship between IT capability and the key success factors for new product advantage. Conducting an empirical field study, the IT capability is shown to have a direct effect on new product competitive advantages, and to be also the key success factor to make up for marketing capability and manufacturing technical capability. This study develops a conceptual model on the role of IT capability in enhancing new product competitive advantages by integrating marketing research and IS research.
무선전력전송 차량 급전인버터에 대한 SFES 활용방안연구
정승민(Seungmin Jung),정환수(Hwan-Su Jung),장길수(Gilsoo Jang) 한국철도학회 2016 한국철도학회 학술발표대회논문집 Vol.2016 No.5
현재 개발되고 있는 무선전력전송 차량충전시스템은 교류를 공급받아 인버터에서 고주파 전력으로 변환하여 차량에 무선으로 전력을 공급하는 형태이다. 최근 변환 과정에서의 손실과 타 변전설비와의 연계 문제를 개선하기 위해, 무선전력전송 충전인버터에 공급하는 전기시스템을 직류로 구성하여 문제를 해결하고자 하는 방안이 연구되고 있다. 본 논문에서는, 해당 직류시스템을 바탕으로 최근 주목 받고 있는 플라이휠 에너지 저장장치를 활용하여 차량 충전 시 발생할 수 있는 저전압 현상을 개선하고 효율적인 에너지 수급을 진행하도록 진행하고자 하였다. 순간적인 전력 공급을 요하는 초고주파 충전 인버터에 대응할 수 있도록 EMTDC 시스템을 구성하였다. It is recommended to establish the power subsystem nearby the transformer because the charging system usually demands significant power. However, as the system is usually built in urban area and it makes hard to construct the subsystems at every station, low voltage conditions can generate in power subsystem that is some distance from the distributed transformer. Recently, the DC distribution system is introduced and has possibility to solve the above issue. In this paper, SFES is introduced to solve the voltage drop under the low voltage distribution system. The case study to utilize the SFES by using DC power flow analysis is carried out and it is tested in this paper.
복합발전의 공급전력 안정성 극대화를 위한 파력발전 PCS의 BESS 연동방안 연구
정승민(Seungmin Jung),김현욱(Hyun-Wook Kim),유연태(Yeuntae Yoo),장길수(Gilsoo Jang) 한국조명·전기설비학회 2014 조명·전기설비학회논문지 Vol.28 No.5
The combined generator system by integrating several renewable energy sources can share the electrical infrastructure and therefore have the advantage of constructing not only the transmission system but also the power conversion system. Among the various combined renewable system, the wind power and wave power has a high possibility of future growth due to the economic feasibility in offshore environment. This kind of large-scale combined systems might be follow the determination by the transmission system operator’s directions and control the output profile by focusing at PCC. However, both renewable energies are depend on the unpredictable environmental variation; it is needed to do the compensation devices. In this paper, the ESS compensation plan is proposed to do output determination of the combined generator system by paying attention to active power of utility grid with the analysis of the controllable elements of the wind and wave power generator. The improvement of the new application technique of the combined system is confirmed through using the PSCAD/EMTDC. The entire simulation process was designed by adopting the active power control according to the reference signal of TSO.
철도 변전소 공유를 통한 직류 도시철도 시스템 회생에너지 이용률 향상 방안 연구
정승민(Seungmin Jung),이한상(Hansang Lee),변길성(Gilsung Byun),권세혁(Sae-Hyuk Kwon),장길수(Gilsoo Jang),정호성(Hosung Jung),김형철(Hyungchul Kim) 대한전기학회 2011 전기학회논문지 Vol.60 No.12
This paper deals with the power integration of large urban railway systems to improve regenerative energy utilization. Current regenerative energy utilization is low because there is no special plan for using this energy. If the railway system is integrated with other railway systems, the efficiency is expected to be improved. Through the case studies, to find the realistic effect of integrated operation, real system for the Seoul Metro lines, especially line 5 and 7, had been applied.