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주완돈(Joo, Wan-Don),이정훈(Lee, Jeong-Hoon),김정일(Kim, Jeong-Il),정석용(Jeong, Seok-Yong),신영호(Shin, Young-Ho),박종포(Park, Jong-Po) 한국신재생에너지학회 2009 한국신재생에너지학회 학술대회논문집 Vol.2009 No.06
This paper introduces the design concepts and characteristics of WinDS3000^{TM} which is a trade mark of Doosan's 3MW offshore/onshore wind turbine. WinDS3000^{TM} has been designed in consideration of high RAMS (Reliability, Availability, Maintainability and Serviceability) and cost effectiveness for the TC Ia condition in GL guideline. An integrated drive train design with an innovative three-stage gearbox has been introduced to minimize nacelle weight of the wind turbine and to enhance a high reliability for transmission. A permanent magnet generator with full converter system has been introduced to get higher efficiency in part load operation, and grid friendliness use of 50 Hz and 60 Hz grid. A pitch regulated variable speed power control with individual pitch system has been introduced to regulate rotor torque while generator reaction torque can be adjusted almost instantaneously by the associated power electronics. An individual pitch control system has been introduced to reduce fatigue loads of blade and system. The wind turbine has been also equipped with condition monitoring and diagnostic systems in order to meet maintainability requirements. And internal maintenance crane in nacelle has been developed. As a result, the maintenance cost was dramatically reduced and maintenance convenience also enhanced in offshore condition.
주완돈(Joo, Wan-Don),박정훈(Park, Jeung-Hun),최준혁(Choi, June-Hyug),임채욱(Lim, Chae-Wook),박종포(Park, Jong-Po) 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.06
This paper presents the general results of the conceptual design of a 3MW class offshore wind turbine named WinDS 3000 under development. In WinDS 3000, an integrated drive train design, three stage gearbox and permanent magnet generator (PMG) with fully rated converters have been introduced. A pitch regulated variable speed power control with individual pitch control has been adopted to regulate rotor torque while generator reaction torque can be adjusted almost instantaneously by the associated power electronics. Through the introduction of WinDS 3000, it is expected that helpful to understanding of the development status of 3MW offshore wind turbine.
배의성(Eui-Sung Bae),주완돈(Wan-Don Joo),이동호(Dong-Ho Lee) 한국항공우주학회 2006 韓國航空宇宙學會誌 Vol.34 No.1
본 연구에서는 Gurney 플랩이 달린 NACA 0012 익형에 대한 플러터 해석을 시간 영역에서 수행하였다. 2차원 비정상 압축성 Navier-Stokes 방정식과 Lagrange 방정식으로부터 유도한 2계 자유도 plunge & pitch 모델을 지배방정식으로 하여 연성 결합 기법을 통해 플러터 해석을 수행하였다. 계산 결과 Gurney 플랩을 장착할 경우 NACA 0012에 비해 플러터가 발생하는 속도가 낮아졌고, 마하수가 0.85보다 작은 영역에서는 Gurney 플랩의 플러터 경계 곡선은 안전 여유를 상회하는 영역에 위치하였다. 그러나, 마하수가 0.85에서 0.9사이일 경우에는 안전 여유에 근접하게 되므로 이러한 운용 영역에서는 Gurney 플랩의 사용에 주의를 요한다. Flutter analysis of NACA 0012 with Gurney flap was conducted in time domain. Flutter analysis was performed with a conjunction of two governing equations; one is 2D Navier-Stokes equation and, the other is Lagrange equation of two dimensional plunge & pitch model. Both governing equations were coupled by loose-coupling method. From the computed results, the effect of Gurney flap was concluded to move the flutter boundary of NACA 0012 downward, which means flutter occurs at lower speed than that of NACA 0012. Although flutter boundary of gurney flap was above the safety margin when mach number was lower than 0.85, there might be a possibility of crossing the safety margin when mach number was between 0.85 and 0.9. For safety, the effect of gurney flap needs to be investigated carefully before using it.
설계공간 타당성 향상을 통한 한국형 해상풍력터빈 블래이드 최적형상설계 연구
이기학(Lee, Ki-Hak),주완돈(Joo, Wan-Don),홍상원(Hong, Sang-Won),김규홍(Kim, Kyu-Hong),이경태(Lee, Kyung-Tae),이동호(Lee, Dong-Ho) 한국신재생에너지학회 2006 한국신재생에너지학회 학술대회논문집 Vol.2006 No.06
본 연구의 목적은 차세대 대체에너지로 각광받는 풍력발전 중에서 육상발전보다 여러 가지 이점이 있는 한국형 해상풍력터빈 블레이드의 최적형상설계를 위한 알고리즘을 구현하는 것이다. 블레이드 단면 익형의 양력과 항력 분포는 XFOIL을 이용하여 예측하였다. 첫 번째 수준의 설계변수인 각각의 블레이드 지름과 축 회전수에서 익형의 공력변수들과 최소에너지손실 조건을 이용하여 두 번째 설계변수인 각 블레이드 단면에서의 시위길이와 피치각 분포를 최적화하였다. 그리고 성능결과를 바탕으로 반응면을 구성하고, 확률적 방법을 이용하여 타당성 있는 설계공간까지 첫 번째 설계변수를 이동시키고 구배최적화 기법을 통해 각각의 제약함수를 만족하면서 목적함수를 죄대로 하는 최적블레이드 형상을 구현하였다. 설계된 최적형상에 대해 탈설계점 해석을 수행하여 성능을 구하였다.
김경택(Kyung-Taek Kim),주완돈(Wan-Don Joo),이상일(Sang-Il Lee),이정훈(Jeong-Hoon Lee) 한국신재생에너지학회 2015 신재생에너지 Vol.11 No.2
This paper deals with a numerical investigation on aeroelastic stability characteristics of a 3-MW wind turbine blade. Utilizing a commercial software, a linear aeroelastic model for the blade stability analysis is constructed based on both the blade element momentum (BEM) theory and formulations for flexible multi-body system dynamics. Conventional linear stability analysis, which is suitable for the early stages of blade design, is then carried out by calculating complex eigenvalues of the analysis model taking normal and abnormal operating conditions into account. The results demonstrate that the blade maintains the stability during standard normal operation, and also emphasize the necessity of considering potential abnormal operating events, such as those caused by control system faults, for blade aeroelastic stability analysis.
WinDS3000<sup>TM</sup> 시스템의 블레이드 개발 및 시험
이상일(Lee, Sang-Il),이경우(Lee, Kyeong-Woo),주완돈(Joo, Wan-Don),이기학(Lee, Ki-Hak),박종포(Park, Jong-Po) 한국신재생에너지학회 2009 한국신재생에너지학회 학술대회논문집 Vol.2009 No.11
A new blade has been developed to apply to Doosan 3MW offshore wind turbine named as WinDS3000TM. The 3MW blade has been designed by the concept of slim external shape and optimized structure. High-performance glass fiber reinforced epoxy composites were used as the main material of the blade. The blade was manufactured using vacuum infusion process in order to increase the fiber volume fraction and to reduce micro-porosities. The blade has successfully passed the full-scale blade static test for certification. During the test, micro-failure signal and strain change of the blade were measured using acoustic emission sensors and strain gages. The blade has robust structure and weighs lighter compared to conventional blade since the new blade was designed by optimization process. The 3MW blade will be commercially applied to WinDS3000^{TM} in 2010.