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다물체 동역학을 이용한 해상 풍력 발전 구조 해석 기법 개발
오재원(Jaewon Oh),배대성(Daesung Bae),조희제(Huije Cho),임채환(Chaewhan Rim),송진섭(Jinseop Song) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
Dynamics analysis of a floating wind turbine system is coupled with aero-elastic dynamics, hydro dynamics, multi body dynamics and control system. The aero-elastic dynamics code has been developed by NREL(National Renewable Energy Laboratory, USA). The hydro dynamics code has been developed by KIMM(Korea Institute of Machinery & Materials) and SNU(Seoul National University). Those codes have been merged on the commercial multi-body dynamics software of DAFUL made in VM(Virtual Motion). A wind turbine system consists of blade, hub, power train, nacelle, tower, platform, mooring. The blade and tower are modeled as multi-body system to apply an aero force and elastic force. Pitch and generator torque are controlled with PID controller. Added mass, damping, restoring, mooring and buoyancy forces are applied on the platform. This analysis method is verified by NREL OC3 model and FAST, developed in NREL. As a result, the two results agree well enough to verify the reliability.
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박대준(Daejun Park),배대성(Daesung Bae),조희제(Huije Cho),전효찬(Hyochan Jun),정종덕(Jongduk Jung),편장식(Jangsik Pyun) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
Collector is equipment that supply electrical energy to a subway train. Generally, there are collectors at top of an urban railway vehicle because of electrical wire. But some urban railway vehicles have collectors at bottom of the bogie to receive energy from the wire beside of a rail. This is a system that the collectors contact with a rail. For this reason, the device has a strong influence on safety of the vehicle. This study shows examination of a collector using simulation program. DAFUL is a software to analyze Multi Body Dynamic system. Dynamic model is composed of joints, springs, and contact. Motion function enables the model to move by simulation. After these process, examination of collector is possible. The simulation model would be useful to analyze similar system.
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