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교차류형 100W급 용융탄산염 연료전지 스택 장기운전평가
임희천(H . C . Lim),설진호(J . H . Seol),류철성(C . S . Ryu),이창우(C . W . Lee),홍성안(S . A . Hong) 한국수소및신에너지학회 1995 한국수소 및 신에너지학회논문집 Vol.6 No.2
A 100kW class stack consisting of 10 molten carbonate fuel cells has been fabricated. Internally manifold stack has been tested for endurance. Each cell in the stack had an electrode area of 100kW and reactant gases were distributed in each cells in a cross-flow configuration. Initial and long term operation performance of the stack was investigated as a function of gas utilization using a specially designed small scale stack test facility. It was possible to have a stack with an output of more than 100W using an anode gas of 72% H₂/18% CO₂/10%H₂O and cathode gas of 33% O₂/67% CO₂ and 70% Air 30% CO₂. The output and voltage of the stack at a current 15A(150mA/cm²) and gas utilization of 0.4 showed 125.8W and 8.39V respectively by elapsed time of 310 hours operation. In long term operation characteristics, the voltage drop of 52.4mV/1000hour was observed after more than 1,840 hours operation. Among the voltage drop, the OCV loss was highest than other voltage loss such as internal resistance and electrode polarization. Non uniformity of 2voltages and degradation of cell voltage in the stack was observed in according to changing the utilization rate after a long term operation. Further work for increasing the performance prolonging the life of the stack are required.
250 ㎾ 발전용 용융탄산염 연료전지 기술개발 V (125 ㎾ 시스템 제작 및 운전 평가)
임희천(H-C Lim),김의환(E-H Kim) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.10
This paper shortly describe the R&D results for developing of 250 ㎾ externally reforming MCFC (Molten Carbonate Fuel Cell) CHP proto type. Instead of 250 ㎾ MCFC System, 125 ㎾ MCFC system has been operated at Boryeong thermal power plant site since the end of 2009. The system was consisted with 125 ㎾ MCFC stack, MBOP and EBOP. The 125㎾ MCFC stack was assembled and installed on the end of December, 2009 and started initial operation on January, 2010. At initial load operation, the stack exhibited the OCV of 214V. At the early stage, the stack showed the voltage range from 160V to 180 V at the static current and reached 120㎾ DC. This system has been operated for 3,270 hours until March, 2010. In addition, the operation time of rated power records 1200 hours.
상용툴을 이용한 120㎾급 계통연계형 태양광발전시스템의 모델링 및 모의 해석
황정희(J. H. Hwang),안교상(K. S. Ahn),김영섭(Y. S. Kim),임희천(H. C. Lim),오제명(J. M. Oh) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
In this paper, to evaluate the grid-connected 120㎾ class Photovoltaic(PV) system performance, as a consisted of solar cells, PCS, 150㎸A transformer station. The paper address modeling and analysis of a grid-connected 120㎾ class photovoltaic generation system(PV system) PSCAD/EMTD and Psim. A PWM voltage source inverter(VIS) and its current control scheme have been implemented. A P&O(Perturbation and Observation) MPPT algorithms technique modeling has been simulated and analysed.
단일용량 120㎾급 계통연계형 태양광 발전용 PCS 개발
신영찬(Y.C.Shin),문준선(J.S.Moon),나병훈(B.H.Ra),김영록(Y.R.Kim),김신섭(S.S.Kim),안교상(K.S.Ahn),임희천(H.C.Lim) 전력전자학회 2006 전력전자학술대회 논문집 Vol.- No.-
본 논문에서는 국내최초로 개발에 성공한 단일용량의120㎾급 계통연계형 태양광발전용 PCS에 관한 내용을 설명하고 있다. 120㎾급 계통연계형 태양광발전시스템은 22.9㎸의 특고압계통전원에 연계되도록 설계되었으며, 삼상 380V를 22.9㎸로 승압 연계하는 2단 절연방식을 채택하였다. 120㎾급 PCS는 상용주파수 변압기 절연방식으로 3상4선식 380V 60㎐ 출력을 가지고 있으며, PCS 내부에 120㎸A급 변압기와 리액터를 포함하고 있다. 최대출력점추종(MPPT)제어 기법으로 P&D 알고리즘을 적용하였으며, 3상 IGBT 인버터를 DSP로 제어하였다. 본 논문에서는 120㎾급 단일용량 PC를 개발함에 있어, 계통연계 시험, 유, 무효 전류제어 시험, 단독운전 검출 및 방지 시험, 출력전류의 THD 측정 등의 결과를 보이고 있다.
120㎾급 태양광 발전시스템의 실 계통 연계 운영에 대한 연구
황정희(J. H. Hwang),안교상(K. S. Ahn),황인호(I. H. Hwang),임희천(H. C. Lim),오제명(J. M. Oh),김수창(S. C. Kim),김신섭(S. S. Kim) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
This paper summarizes the results of medium-scale(120㎾ class) installed in a Taeahn steam power system of Korea Western Power Co., Ltd., Scope of the study is development on the practical Technology for Application and evaluation of 120㎾ class PV system in a real power system. In this paper represent performance of 120㎾ PV system has been evaluated and analysed with simulation.