• Title, Summary, Keyword: Wind Turbine

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Verification of The Variable-Speed Wind Turbine Control System by Using the Simulator (시뮬레이터를 이용한 가변속 풍력발전기 제어시스템 검증)

  • Cha, Sam-Gon;Han, Sang-Yul;Cha, Jong-Hwan;Choi, Won-Ho;Lee, Seung-Kuh
    • 한국신재생에너지학회:학술대회논문집
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    • pp.370-373
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    • 2007
  • For the development of wind turbine, generally simulator is used. Simulator include wind turbine components. e.g blades, pitch and pitching method, rotor, yaw system, tower, drive train and so on. Few the more, it include a external circumstance. e.g wind speed, wind direction, air density. these basic parameters be used for the control of wind turbine by wind turbine controller in wind turbine simulator. The wind turbine controller can be designed in the wind turbine simulator. But a developer must make the real control system that will be made using PLC or PC or other processor. The developer must verify the function of control system. that is control algorithm , I/O function, communication, sequence and so on. This verification is possible if we substitute the real wind turbine control system for wind turbine controller in the simulator.

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A Study of the Analysis System of Remote Control a Voltage Fluctuation of a Based Wind Turbine (풍력기반 하이브레드 풍력발전기의 원격 정전압 변동률 분석 장치에 관한 연구)

  • Jang, Mi-Hye;Sun, Mean-Young;Lee, Jong-Jo;Lim, Jae-Kyoo
    • 한국신재생에너지학회:학술대회논문집
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    • pp.456-459
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    • 2009
  • we studied a data acquisition and control system of a wind turbine for measuring and controlling a voltage fluctuations of a wind turbine system. The wind turbine system is installed out control area. So, it is so important for supervising to wind turbine of a maintenance, wind speed, optical resources wind turbine output, wind speed, wind direction, over voltage of a generator. This system can be supplied a data of over voltage, under voltage, voltage fluctuations of a wind turbine for controlling an EMS : Energy Management System or a SCADA : Supervision Control and Data Acquisition at a constitute of a wind farm. The of voltage fluctuation system of a wind turbine is improving an electric power supply power quality of a distribution line and unspecified individuals of used wind turbine.

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Design and Manufacture of Small-Scale Wind Turbine Simulator to Emulate Torque Response of MW Wind Turbine

  • Lim, Chae Wook
    • International Journal of Precision Engineering and Manufacturing-Green Technology
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    • v.4 no.4
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    • pp.409-418
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    • 2017
  • Small-scale wind turbine simulators have been used in laboratories in order to verify power control of real-world large multi-MW wind turbines. The response speed of multi-MW wind turbines is so slow that the response time considerably exceeds several seconds. This fact should be considered in the design of small-scale wind turbine simulators. In this paper, a 3.5 kW wind turbine simulator is designed and manufactured in order to emulate torque response of a 2 MW wind turbine. The small-scale wind turbine simulator consists of a motor, a gear box, a flywheel, and a generator. Two main design parameters are the rotor radius and the mass moment of inertia of the flywheel. The main design objective is to make the 3.5 kW wind turbine simulator have the similar both time constant and wind speed range for optimal TSR (tip speed ratio) to those of the target 2 MW wind turbine. Through numerical simulations and experiments for step response, we demonstrate that the designed and manufactured 3.5 kW wind turbine simulator has the response speed similar to that of the 2MW wind turbine in the aspect of torque response.

PMSG Wind Turbine Simulation under the consideration of real characteristics (PMSG 풍력 터빈의 특성을 고려한 발전 시스템 시뮬레이션)

  • Sim, Junbo;Kim, Myungho;Park, Kihyeon;Han, Kyungseop
    • 한국신재생에너지학회:학술대회논문집
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    • pp.182.2-182.2
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    • 2010
  • A various algorism has been studied to extract possibly every energy from a wind turbine in conjunction with the increase of concern about wind power system. In order to verify these control algorism, it is essential to make the most similar conditions to the real wind turbine's environment. Therefore, using separately excited DC motor a wind turbine the most similar to the real turbine is simulated. Tower shadow effect and Wind shear effect are considered as well as inertia emulation. For the control of Back-to-Back Converter Vector current control methods and space vector pulse width modulation are used and for reducing THD of grid current LCL filter is considered. This simulation results verified the energy produced by wind all flows into the utility under the consideration of the characteristics of a wind turbine. The result of this paper is expected to be used as a basic material for analyzing the characteristics of the wind turbine generator.

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A comparison of the performance characteristics of large 2 MW and 3 MW wind turbines on existing onshore wind farms

  • Bilgili, Mehmet;Ekinci, Firat;Demirdelen, Tugce
    • Wind and Structures
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    • v.32 no.2
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    • pp.81-87
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    • 2021
  • The aim of the current study is to compare the performance of large 2 MW and 3 MW wind turbines operating on existing onshore wind farms using Blade Element Momentum (BEM) theory and Angular Momentum (AM) theory and illustrate the performance characteristic curves of the turbines as a function of wind speed (U∞). To achieve this, the measurement data obtained from two different Wind Energy Power Plants (WEPPs) located in the Hatay region of Turkey was used. Two different horizontal-axis wind turbines with capacities of 2 MW and 3 MW were selected for evaluation and comparison. The hub-height wind speed (UD), turbine power output (P), atmospheric air temperature (Tatm) and turbine rotational speed (Ω) data were used in the evaluation of the turbine performance characteristics. Curves of turbine power output (P), axial flow induction factor (a), turbine rotational speed (Ω), turbine power coefficient (CP), blade tip speed ratio (λ), thrust force coefficient (CT) and thrust force (T) as a function of U∞ were obtained for the 2 MW and 3 MW wind turbines and these characteristic curves were compared. Results revealed that, for the same wind speed conditions, the higher-capacity wind turbine (3 MW) was operating at higher turbine power coefficient rates, while rotating at lower rotational speed ratios than the lower-capacity wind turbine (2 MW).

Perception of amplitude-modulated noise from wind turbines (풍력발전기 소음의 진폭변조에 대한 예측 및 인지 가능성 고찰)

  • Lee, Seunghoon;Kim, Hogeon;Kim, Kyutae;Lee, Soogab
    • 한국신재생에너지학회:학술대회논문집
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    • pp.180.1-180.1
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    • 2010
  • Wind turbine noise is generally lower than that from other environmental noise sources such as road and railway noise. Nevertheless, some residents living more than 1km away from wind turbines have claimed that they suffer sleep disturbance due to wind turbine noise. Several researchers have maintained that residents near a wind farm may perceive large amplitude modulation of wind turbine noise at night, and this amplitude modulation is the main cause of the noise annoyance. However, to date only few studies exist on the prediction of the amplitude modulation of wind turbine noise. Thus, this study predicts amplitude modulated noise generated from a generic 2.5MW wind turbine. Semi-empirical noise models are employed to predict the modulation depth and the overall sound pressure level of the wind turbine noise. The result shows that the amplitude modulation is observed regardless of atmospheric stability, but the modulation depth in a stable atmosphere is 1~3dB higher than that in an unstable atmosphere near the plane of rotation where the blades move downward. Moreover, using the result of the noise prediction, this study estimates the maximum perceptible distance of the wind turbine noise cause by amplitude modulation. The result indicates that the wind turbine noise can be perceived at a distance of up to 1600m in the range of about 30~60 degree from the on axis in a extremely low background noise environment.

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Validation of a 750 kW semi-submersible floating offshore wind turbine numerical model with model test data, part I: Model-I

  • Pham, Thanh Dam;Shin, Hyunkyoung
    • International Journal of Naval Architecture and Ocean Engineering
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    • v.11 no.2
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    • pp.980-992
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    • 2019
  • This paper describes a model test and numerical simulation of a 750-kW-semi-submersible platform wind turbine under several wind and wave conditions for validation of the numerical simulation model. The semi-submersible platform was designed to support the 750-kW-wind turbine class and operate at a water depth of 50 m. The model tests were performed to estimate the performance characteristics of the wind turbine system in the wide tank of the University of Ulsan. Motions and loads of the wind turbine system under the wind and wave conditions were measured and analyzed. The NREL-FAST code was used to simulate the wind turbine system, and the results were compared with those of the test model. The results demonstrate that the numerical simulation captures noticeably the fully coupled floating wind turbine dynamic responses. Also, the model shows a good stability and small responses during waves, wind, and operation of the 750-kW-floating offshore wind turbine.

Load simulation for offshore wind turbine (해상풍력터빈에 대한 하중 모사 방법 연구)

  • Suk, Sangmin;Lee, Sunggun;Chung, Chinhwa;Park, Hyunchul
    • 한국신재생에너지학회:학술대회논문집
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    • pp.58.1-58.1
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    • 2011
  • In this paper, the purpose is a study on structural analysis for offshore wind turbine using commercial code. Because offshore wind turbine is subjected to great wind and wave force, it is necessary to analyse the dynamics and minimize the response of wind turbine. The offshore wind turbine tower is modelled as a single degree of freedom and multi degree of freedom structure. It is assumed that the blades, nacelle are composed of concentrated masses.

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Design and CFD study of 360 W class wind turbine tree in accordance with environmental scenery (주위 경관을 고려한 360 W급 풍력터빈나무 설계 및 유동해석)

  • Ha, Min-Su;Jung, Won-Hyuk;Choi, Nak-Joon;Park, Young-Chul
    • Journal of Advanced Marine Engineering and Technology
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    • v.37 no.1
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    • pp.78-84
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    • 2013
  • The objective of this paper is to develop 360 W class wind turbine tree using a helical type wind turbine. The performance of 100 W class helical wind turbine which finished the conceptual design has been forecast through the CFD analysis. After performed the analysis of one wind turbine performance, four wind turbine have been installed at the structure of a tree type and then the change of a output data has been verified through the CFD analysis. In this study, the CFD results of a helical wind turbine tree have been shown by a velocity and pressure distribution. The result could obtain more than rated power 360 W through the CFD analysis.

Simulation Technique of Wind Turbine Dynamic Behavior using Multibody FEM Analysis (탄성 다물체 동역학 해석기법을 이용한 풍력터빈 드라이브트레인의 동특성 해석)

  • Lee, Seung-Kyu;Lim, Dong-Su;Park, Young-Su;Kim, Jin;Choi, Won-Ho
    • Proceedings of the KSME Conference
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    • pp.817-821
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    • 2008
  • Wind turbine requires service life of about 20 years and each components of wind turbine requires high durability, because installation and maintenance costs are more expensive than generated electricity by wind turbine. So the design of wind turbine must be verified in various condition before production step. This paper demonstrates the application of a generic methodology, based on the flexible multibody simulation technique, for the dynamic analysis of a wind turbine and its drive train. The concern of the paper is the computation of dynamic loads of wind turbine in emergency-stop condition. The finite element model is used to analyse the dynamic behaviour of the wind turbine.

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