http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
임종환,최민호,허종철,김건훈 濟州大學校 産業技術硏究所 2000 산업기술연구소논문집 Vol.11 No.1
This paper derives a modeling of a wind turbine and generator. and presents a power control algorithm for a full pitch-controlled wind turbine system. The design of a controller. in general. is performed by linearizing the torque in the vicinity of a operating point assuming the tip speed ratio is constant. For power control. however. the tip speed ratio is no longer a constant. In this study. a reference pitch model is derived in terms of a wind speed. angular velocity. and pitch angle. which makes it possible to design a controller without linearizing the non-linear torque model of the blade. The validity of the algorithm is demonstrated with the results produced through sets of simulation.
임종환,최민호,허종철,김건훈 제주대학교 산업기술연구소 2000 尖端技術硏究所論文集 Vol.11 No.2
This paper derives a modeling of a wind turbine and generator, and presents a power control algorithm for a full pitch-controlled wind turbine system. The design of a controller, in general, is Performed by linearizing the torque in the vicinity of a operating point assuming the tip speed ratio is constant. For power control, however, the tip speed ratio is no longer a constant. In this study, a reference pitch model is derived in terms of a wind speed, angular velocity, and pitch angle, which makes it possible to design a controller without linearizing the non-linear torque model of the blade. The validity of the algorithm is demonstrated with the results produced through sets of simulation.
부성환,임종환,허종철,김건훈 제주대학교 산업기술연구소 1999 尖端技術硏究所論文集 Vol.10 No.2
Torque generated by the blade of a wind turbine is a non-linear function of the wind velocity, the angular velocity of the rotor and the pitch angle. Glauert's theory for propellers, though widley used, is not suited to simulate the performance under variable wind speed and pitch angle. Furthermore, the numerical iteration procedure of the theory districts the applicability of a real time control of the wind turbine. We suggest a new method of modeling the torque that can be used in a real time control. Based on Glauert's theory, the power coefficient curve is estimated. In the vicinity of the operating point on the curve, a linearized model is extracted in terms of the wind velocity, the angular velocity and the pitch angle. the usefulness of the model is demonstrated with the results produced by sets of experiments.
최민호,임종환,허종철,이동현,김건훈 濟州大學校 産業技術硏究所 2000 산업기술연구소논문집 Vol.11 No.1
Wind turbine system converts wind energy into electric energy. Since the velocity of wind is random in nature. control of the angular velocity of the blade is needed in order to generate high quality electric power. The control of a blade can be divided into a stall regulation type and a pitch control type. The stall regulation type which uses an aerodynamic stall is simple and cheap, but it suffers from fluctuation of the resulting power. On the contrary. pitch control type is based on the fact that the torque of the blade can be changed by varying the pitch angle of the blade. It is mechanically and mathematically complicated. but the control performance is better than that of the stall regulation type. This paper derives a mathematical modeling of the wind turbine system, and suggests a pitch control algorithm. The validity of the algorithm is demonstrated with the results produced through sets of simulation.
이동현,임종환,허종철,최민호,김건훈 제주대학교 산업기술연구소 2000 尖端技術硏究所論文集 Vol.11 No.1
Wind turbine system converts wind energy into electric energy. Since the velocity of wind is random in nature, control of the angular velocity of the blade is needed in order to generate high quality electric power. The control of a blade can be divided into a stall regulation type and a pitch control type. The stall regulation type which uses an aerodynamic stall is simple and cheap, but it suffers from fluctuation of the resulting power. On the contrary, pitch control type is based on the fact that the torque of the blade can be changed by varying the pitch angle of the blade. It is mechanically and mathematically complicated, but the control performance is better than that of the stall regulation type. This paper derives a mathematical modeling of the wind turbine system, and suggests a pitch control algorithm. The validity of the algorithm is demonstrated with the results produced through sets of simulation.