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디지털제어 DC-DC컨버터로 구성된 계통연계 연료전지발전 시뮬레이션모델 개발
주영아(Young-Ah Ju),차민영(Min-Young Cha),한병문(Byung-Moon Han),강태섭(Tae-Sub Kang),차한주(Han-Ju Cha) 대한전기학회 2009 전기학회논문지 Vol.58 No.9
This paper proposes a new power conditioning system for the fuel cell power generation, which consists of a ZVS DC-DC converter and 3-phase inverter. The ZVS DC-DC converter with a digital controller boosts the fuel cell voltage of 26-50V up to 400V, and the grid-tie inverter controls the active power delivered to the grid. The operation of proposed power conditioning system was verified through simulations with PSCAD/EMTDC software. The feasibility of hardware implementation was verified through experimental works with a laboratory prototype, which was built with 1.2㎾ PEM fuel-cell stack, 1㎾ DC-DC converter, and 3㎾ PWM inverter. The proposed system can be utilized to commercialize an interconnection system for the fuel-cell power generation.
조호령(Ho-Ryung Cho),김재문(Jae-Moon Kim),김인철(In-Chuol Kim),전찬웅(Chan-Woong Jeon),조시현(Si-Hyeun Cho),박혜민(Park Hye-Min),박종원(Park Jong-Won),오우식(Woo-Sik Oh),김종락(Kim Jong-Rak),강태섭(Kang Tae-Sub) 한국철도학회 2020 한국철도학회 학술발표대회논문집 Vol.2020 No.11
전차선로에는 전차선에 안정적인 전력을 급전하기 위하여 전철변전소와 급전구분소 등이 시설되고, 급전시설에는 전차선에 급전과 단전을 담당하는 전원개폐장치인 부하개폐기나 단로기가 설치되어 필요에 따라 전원을 개폐하게 된다. 현재 국내에서는 에폭시절연부하개폐기를 주로 사용하고 있고 최근에는 진공인터럽터를 내장하여 부하개폐가 가능하면서도 절연부와 개폐부가 노출된 개방형 부하개폐기가 수입되어 사용되고 있다. 본 논문에서는 현재 개발하고 있는 개방형 부하개 폐기의 절연애자의 특성에 대하여 살펴보고 설계검토 내용에 대하여 살펴보고자 한다.
말기 신부전증 환자의 혈액투석을 위한 내동정맥루의 개존율
김용신,강태섭,배원길 대한혈관외과학회 1997 Vascular Specialist International Vol.13 No.2
Hemodialysis that to maintain life quality and may be preliminary stage of kidney transplantation is essential in end-stage renal disease(Esrd) patients. Since 1996, Brescia-cimino are used to internal radio- cephalic fistula and this fistula method was the most popular in world-wide. And then variable methods (e.g, Autogenous, PTFE, Dacron etc.) were usually tried instead of above standard fistula. We experienced 75 fistulas in 62 cases from Jan. 1993 to Dec. 1996 and among 75 fistula operations standard radio-cephalic fistula was 56, brachio-cephalic fistula 10, graft fistula 9. Early patency failure rate of A-V fistula was 9 cases, 14.5%. Significant factors to effect in patency of A-V fistula were propably diabetic mellitus, venous diameter, graft material and were not related to age/sex, blood pressure, BUN/creatinine etc. In conclusion the reduction of early patency failure rate in A-V fistula is to maintain long patency rate of A-V fistula.