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노남선(Nho, Nam-Sun),신대현(Shin, Dae-Hyun),박소원(Park, Sou-Won),이경환(Lee, Kyong-Hwan),김광호(Kim, Kwang-Ho),전상구(Jeon, Sang-Goo),조봉규(Cho, Bong-Gyu) 한국신재생에너지학회 2006 한국신재생에너지학회 학술대회논문집 Vol.2006 No.06
The target of this work was the process development of demonstration plant to produce the high quailty alternative fuel oil by the pyrolysis of mixed plastic waste. In the first step of research, the bench-scale units of 70t/y and the pi lot plant of 360 t/v had been developed. Main research contents in this step were the process performance test of pilot plant ot 360ton/year and the development of demonstration plant of 3 000 t/y which was constructed at Korea R & D Company in Kimjae City. The process performance of pilot plant of 360 t/v showed components in PONA group appeared at between that of commercial gasoline and kerosene. On the other hand, HO product was mainly paraffin and olefin components and also appeared at upper temperature distribution range than commercial diesel. Gas product showed a high fraction of C₃;and;C₄ product like LPG composition, but also a high fraction of CO₂ and CO by probably a little leak of process.
노남선(Nho, Nam-Sun),신대현(Shin, Dae-Hyun),박소원(Park, Sou-Won),이경환(Lee, Kyong-Hwan),김광호(Kim, Kwang-Ho),전상구(Jeon, Sang-Goo),조봉규(Cho, Bong-Gyu) 한국신재생에너지학회 2006 신재생에너지 Vol.2 No.2
The target of this work was the process development of demonstration plant to produce the high quality alternative fuel oil by the pyrolysis of mixed plastic waste. In the first step of research, the bench-scale units of 70 t/y and the pilot plant of 360 t/y had been developed. Main research contents in this step were the process performance test of pilot plant of 360 ton/year and the development of demonstration plant of 3,000 t/y, which was constructed at Korea R & D Company in Kimjae City. The process performance of pilot plant of 360 t/y showed about 80% yield of liquid product, which was obtained by both light gas oil(LGO) and heavy gas oil(HGO), The boiling point range distribution of LO product that was mainly consisting of olefin components in PONA group appeared at between that of commercial gasoline and kerosene. On the other hand, HO product was mainly paraffin and olefin components and also appeared at upper temperature distribution range than commercial diesel. Gas product showed a high fraction of C₃;and;C₄ product like LPG composition, but also a high fraction of CO₂ and CO by probably a little leak of process.
Improvement of Output Linearity of Matrix Converters with a General R-C Commutation Circuit
Nam-Sup Choi,Yulong Li,Byung-Moon Han,Eui-Cheol Nho,Jong Sun Ko 전력전자학회 2009 JOURNAL OF POWER ELECTRONICS Vol.9 No.2
In this paper, a matrix converter with improved low frequency output performance is proposed by achieving a one-step commutation owing to a general commutation circuit applicable to n-phase to m-phase matrix converters. The commutation circuit consists of simple resister and capacitor components, leading to a very stable, reliable and robust operation. Also, it requires no extra sensing information to achieve commutation, allowing for a one-step commutation like a conventional dead time commutation. With the dead time commutation strategy applied, the distortion caused by commutation delay is analyzed and compensated, therefore leading to better output linear behavior. In this paper, detailed commutation procedures of the R-C commutation circuit are analyzed. A selection of specific semiconductor switches and commutation circuit components is also provided. Finally, the effectiveness of the proposed commutation method is verified through a two-phase to single-phase matrix converter and the feasibility of the compensation approach is shown by an open loop space vector modulated three-phase matrix converter with a passive load.
Matrix Converter with a Novel General Commutation Strategy
Nam-Sup Choi,Yulong Li,Byung-Moon Han,Jong-Sun Ko,Eui-Cheol Nho 전력전자학회 2007 ICPE(ISPE)논문집 Vol.- No.-
A novel general commutation strategy is proposed for n-phase to m-phase matrix converter applications. The proposed circuit with a simple RC snubber as commutation aid requires no extra sensing information allowing conventional dead time commutation. In this paper, detailed commutation procedure of the proposed circuit is analyzed; the choice of specific semiconductor switches and snubber components is also derived and given. The operation of the proposed circuit is very stable, reliable and robust. Finally, experimental results support the validity of the proposed structure and circuit.