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SK케미칼 연구소에 적용된 친환경 기술 적용 효과 분석 : 에너지 및 수자원 절감 적용 효과를 중심으로
유지용(Ji-Yong Yu),이유하(Yoo-Ha Lee),이영렬(Young-Ryul Lee),양재웅(Jae-Woong Yang),박현근(Hyun-Geun Park) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
The SK Chemical R&D center is an eco-friendly building designed as top score in the GBCC(GREEN BUILDING CERTIFICATE CRITERIA). This building has applied various eco-friendly technologies such as energy /water resource cutdown, improvement of indoor quality and improvement of user convenience, etc through eco-friendly concept from the design phase. In this thesis, an economic efficiency evaluation has been performed on building energy cwater resource cutdown technologies among them and the results are as follows. The building energy has cut down about 40% compared to ordinary buildings and the investment recovery period was shown as about 5 years. The water resource has cut down about 63% compared to ordinary buildings and the investment recovery period was shown as about 10 years.
축소차원 Luenberger 관측기를 이용한 단상 PWM 컨버터의 고역율 제어
양이우(Lee-Woo Yang),유지용(Ji-Yong Yoo),김영석(Young-Seok Kim) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
In this paper, the authors propose a current control system of single phase PWM AC/DC converter without the<br/> .source voltage sensors. The sinusoidal input current and unity effective power factor are realised based on the estimated source voltage in the controller. The estimations of source voltage are performed based on the reduced-order Luenberger observer using actual currents. The estimated source voltage is used to accomplish unity power factor.<br/> The proposed method is proved by simulations