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최한순(Hansoon Choi),윤태준(Tai Jun Yoon),남윤수(Yoonsu Nam) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
The yaw control, a major part of the wind turbine, is closely related to the efficiency of electric powerproduction and the mechanical loads. The yaw error, inconsistency of wind and nacelle direction, causes not only the decrease of power output but also the shorter expectancy due to larger fatigue load than when having the wind in the face. This paper investigates the characteristics of the active yaw control system, basic principle, and mechanical loads around yaw axis.
앙희철(HeeCheol Yang),윤태준(Tai Jun Yoon),홍남표(Nam Pyo Hong),김보현(Bo Hyun Kim),김병희(Byeong Hee Kim) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.5
The core technologies of canned-type electric water pump are demanded for the design and production technology of underwater bearing, system monitoring technology and multiple technologies. In the research, we developed stand-alone basin test which is guaranteed confidentiality and withstands high temperatures. This is manufactured with hydrocarbons(SiC) based bearing performance tester and this can experiment durability with change of driving part regardless of bearing materials and forms. For the design and production of water pump performance tester, performance of the moter, the load of bearing and temperature change, etc. can be monitored in real time by designing and manufacturing control part using Labview program. Therefore, integrated technology and reliability of water bearing performance tester are developed and this technology in water bearing performance tester is developed as core technology.
작동 조건 변화에 따른 풍력발전 시스템의 동적 특성 해석
남윤수(Yoonsu Nam),윤태준(Tai Jun Yoon),유능수(Neung Soo Yoo) 대한기계학회 2009 大韓機械學會論文集A Vol.33 No.1
A design methodology for control strategy and control structure gives a direct impact on wind turbine's performance and life cycle. A baseline control law which is a variable rotor speed and variable pitch control strategy is introduced, and a mathematic performance model of a wind turbine dynamics is derived. By using a numeric optimization algorithm, the steady state operating conditions of wind turbines are identified. Because aerodynamic interaction of winds with rotor blades is basically nonlinear, a linearization procedure is applied to analyze wind turbine dynamic variations for whole operating conditions. It turns out the wind turbine dynamics vary much depending on its operating condition.