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PSCAD/EMTDC를 이용한 PV-AF-SPE 시스템의 특성분석
이동한(Donghan Lee),이석주(Sukju Lee),김종현(Jonghyun Kim),박민원(Minwon Park),유인근(In-Keun Yu) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
In this paper an integrated model of PV-AF (Photovoltaic-Active Filter) and PV-SPE (Photovoltaic Solid Polymer Electrolyte) system using PSCAD/EMTDC were explained in detail. The main concept of PV-AF system starts from the "harmonics". In order to deliver power to utility, PV system essentially needs a converter system. Here PV - AF system adds the function of active filter to the converter system installed in PV system, which was introduced already in several papers. PV-SPE system has been studied as a replacement of existing hydrogen production technology that emits large amount of carbon dioxide into atmosphere. Until now, these two systems, PV-AF and PV-SPE, have been considered separately. However, in this paper, characteristics and advantages of combined system are discussed in detail.
Hardware-Based Implementation of a PIDR Controller for Single-Phase Power Factor Correction
Le Dinh Vuong(레딘브엉),Sang-Min Park(박상민),In-Keun Yu(유인근),Minwon Park(박민원) 한국산업정보학회 2016 한국산업정보학회논문지 Vol.21 No.4
In a single-phase power factor correction (PFC), the standard cascaded control algorithm using a proportional-integral-derivative (PID) controller has two main drawbacks: an inability to track sinusoidal current reference and low harmonic compensation capability. These drawbacks cause poor power factor and high harmonics in grid current. To improve these drawbacks, this paper uses a proportional-integral-derivative-resonant (PIDR) controller which combines a type-III PID with proportional-resonant (PR) controllers in the PFC. Based on a small signal model of the PFC, the type-III PID controller was implemented taking into account the bandwidth and phase margin of the PFC system. To adopt the PR controllers, the spectrum of inductor current of the PFC was analyzed in frequency domain. The hybrid PIDR controller were simulated using PSCAD/EMTDC and implemented on a 3kW PFC prototype hardware. The performance results of the hybrid PIDR controller were compared with those of an individual type-III PID controller. Both controllers were implemented successfully in the single-phase PFC. The total harmonic distortion of the proposed controller were much better than those of the individual type-III PID controller.
유인근(In-Keun Yu) 한국공학교육학회 2007 공학교육연구 Vol.10 No.2
한국공학교육인증원(ABEEK)이 출범한 이래로 많은 대학의 프로그램들이 인증을 받았고 또 준비하고 있으나, 실제 교육현장에서 인증프로그램을 운영하는데 있어서 많은 어려움을 겪고 있는 것 또한 사실이다. 이는 우리나라 공학교육의 인증역사가 일천하여 아직 운영측면에서의 경험이 많지 않고 구성원들의 이해부 족에 기인한 경우도 있다. 본 연구에서는 2002년 인증평가이후 수년간 인증프로그램을 운영해온 경험을 토대로 보다 효과적으로 인증프로그램을 유지할 수 있는 몇 가지 핵심방안을 제시하고자한다. 특히, 각 인증기준별로 필수적으로 문서화하여 관리해야하는 내용들을 중심으로 정기적인 학사일정과 동일한 수준으로 다룰 수 있는 처리과정을 제안하고자 한다. Since the ABEEK has been launched in 2000, many educational programs have been accredited by the ABEEK so far, and lots of programs nationwide are under preparation for the accreditation. However, most of institutes are suffering from the new accreditation system that requires some novel concepts of engineering education, so called, outcomes-based and demand-driven education processes. In this paper, the effective managerial schemes obtained from several years experiences of an accredited program are summarized. Especially, specific contents of the 7 accreditation criteria those need to be periodically documented are recommended and the effective processes for each item are described in detail.
이동한(Lee, Dong-Han),이석주(Lee, Suk-Ju),김종현(Kim, Jong-Hyun),박민원(Park, Min-Won),유인근(Yu, In-Keun) 한국신재생에너지학회 2006 한국신재생에너지학회 학술대회논문집 Vol.2006 No.06
In this paper an integrated model of PV-AF (Photovoltaic-Active Filter) and PV-SPE(Photovoltaic Solid Polymer Electrolyte) system using PSCAD/EMTDC were explained in detaiil. The main concept of PV-AF system starts from the 'harmonics'. In order to deliver power to utility, PV system essentially needs a converter system. Here PV-AF system adds the function of active filter to the converter system installed in PV system, which was introduced already in several papers. PV-SPE system has been studied as a replacement of existing hydrogen production technology that emits large amount of carbon dioxide into atmosphere. Until now, these two systems, PV-AF and PV-SPE, have been considered separately However, in this paper, characteristics and advantages of combined system are discussed in detail.
이동한(Dong-han Lee),이석주(Sukju Lee),김종현(Jonghyun Kim),박민원(Min-won Park),유인근(In-Keun Yu) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.4
In this paper an integrated model of PV-AF (Photovoltaic-Active Filter) and PV-SPE (Photovoltaic Solid Polymer Electrolyte) system using PSCAD/EMTDC were explained in detail. The main concept of PV-AF system starts from the "harmonics". In order to deliver power to utility, PV system essentially needs a converter system. Here PV-AF system adds the function of active filter to the converter system installed in PV system, which was introduced already in several papers. PV-SPE system has been studied as a replacement of existing hydrogen production technology that emits large amount of carbon dioxide into atmosphere. Until now, these two systems, PV-AF and PV-SPE, have been considered separately. However, in this paper, characteristics and advantages of combined system are discussed in detail.
플라즈마를 이용한 메탄올 연료전지용 2성분 전이금속 착물 촉매의 제조
김인경(In-Kyoung Kim),유인근(In-Keun Yu),최성호(Seong-Ho Choi) 융복합지식학회 2021 융복합지식학회논문지 Vol.9 No.4
본 연구의 시료는 아크릴 고분자-전이금속 착물 촉매 전극으로 단일공정 플라즈마 처리 과정을 통해 제조하였다. 구체적으로 아크릴산-Cu 착물, 아크릴산-Ni 착물, 아크릴산-Cu/Ni착물 전구체를 제조 후, 이 전구체를 플라즈마 공정을 거쳐 ITO 전극 표면에 코팅 처리하여 아크릴 고분자-전이금속 착물 촉매 전극을 제조하였다. 3종류의 아크릴 고분자-전이금속 착물 촉매에 대하여 접촉각 측정, SEM, SEM-EDS, AFM, XPS, 전기화학적 방법을 통하여 분석한 결과 3종류의 전극이 플라즈마 단일공정 과정을 거쳐 성공적으로 제조됨을 확인하였다. 3종류의 전극에 대해서 메탄올의 산화 반응 결과를 수행하여 메탄올 연료전지용 촉매로서 가능성을 조사하였다. 그 결과, 촉매 효율은 아크릴 고분자-Cu/Ni 2성분 전이금속 착물 >> 아크릴 고분자-Cu 전이금속 착물 전극에서 높은 효율이 보였다. 반면에 아크릴 고분자-Ni 전이금속 착물 전극에서는 촉매 효율이 나타나지 않았다. 이러한 결과로서 아크릴 고분자-Cu/Ni 전이금속 착물 및 아크릴 고분자-Cu 전이금속 착물은 메탄올 연료전지용 촉매로 사용될 수 있다. 또한, 단일 플라즈마 공정은 연료전지용 전기화학 전이금속 착물 촉매를 제조하는 데 매우 유용한 방법임을 알아냈다. In this study, the acryl polymer-transition metal complex catalytic electrode was prepared by one-step plasma process. In details three-type precursors with acrylic acid-Cu complex, acrylic acid-Ni complex, and acrylic acid-Cu/Ni binary complex was synthesized by complexation reaction, after then the acrylic polymer-transition metal complex catalytic electrode was synthesized by one-step plasma process of the synthesized precursors on the surface of ITO glass. The successful preparation of three-type electrodes was conformed via water contact angle analysis SEM (Scanning Electron Microscopy), SEM-EDS (SEM Energy Dispersive X-ray Spectrometry), AFM (Atomic Force Microscope), XPS (X-ray Photoelectron Spectroscopy) and electrochemical analysis, respectively. Furthermore the catalytic efficiency for fuel cell was evaluated via electrochemical oxidation of methanol to know the possibility used by methanol fuel cell catalyst. As results, the catalytic efficiency was as following order: acryl polymer-Cu/Ni binary transition metal complex >> acryl polymer-Cu transition metal complex, while the acryl-Ni transion complex was not obtained the catalytic efficiency for methanol oxidation. From these results the polyacrylic acid-Cu/Ni binary transition metal complex and polyacrylic acid-Cu transition metal complex catalysts could be used as methanol fuel cell catalysts. In addition the one-step plasma process is good method for preparation of the fuel cell catalysts.