• Title/Summary/Keyword: Wind Turbine Generator

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Fixed speed wind power generation system modeling and transient state stabilization method using PSCAD/EMTDC (PSCAD/EMTDC를 이용한 고정속 풍력발전시스템 모델링 및 과도상태 안정화기법)

  • Kim, Young-Ju;Park, Dae-Jin;Ali, Mohd Hasan;Park, Min-Won;Yu, In-Keun
    • Proceedings of the KIEE Conference
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    • 2008.07a
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    • pp.1178-1179
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    • 2008
  • This paper describes a modeling of fixed speed wind power generation system which comprise of wind turbine, generator and grid. The wind turbine is based on MOD-2, which is IEEE standard wind turbine, and includes a component using wind turbine characteristic equation. Fixed speed induction generator is directly connected to grid, so the variation of wind speed has effects on the electrical torque and electrical output power. Therefore the power control mode pitch control system is necessary for aerodynamic control of the blades. But the power control mode does not operate at the fault condition. So it is required some methods to control the rotor speed at transient state for stabilization of wind power system. In this paper, simulation model of a fixed speed wind power generation system based on the PSCAD/EMTDC is presented and implemented under the real weather conditions. Also, a new pitch control system is proposed to stabilize the wind power system at the fault condition. The validity of the stabilization method is demonstrated with the results produced through sets of simulation.

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A Study on Reliability Validation by Infrared Thermography of Composite Material Blade for Wind Turbine Generator (풍력발전용 복합소재 블레이드의 적외선 열화상 검사를 이용한 신뢰성 검증)

  • Kang, Byung Kwon;Nam, Mun Ho;Lim, Ik Sung
    • Journal of Applied Reliability
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    • v.14 no.3
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    • pp.176-181
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    • 2014
  • In these days, new and renewable energy is getting popular around globe and wind power generator is one of the renewable energy. In this study, we conducted a study on defect detection of composite material blade for wind power generator by applying active infrared thermography and produced a defect test piece by applying composite material used for blade of wind power generator. An infrared thermal camera and 2 kW halogen lamp are used for the purpose of research as equipments. Also, we analyzed temperature characteristic by using infrared thermal camera after checking a heat source on a test piece and found effectiveness of infrared thermography to blade of wind power generator by detecting defects resulting from temperature difference of a test piece, which eventually improve the safety and reliability of the composite material blade.

Power performance Testing of Small Wind Turbine Generator System (소형 풍력발전시스템의 출력성능검사)

  • Kim, Hyeon-Ki;Kim, Byeong-Min;Yoo, Neung-Soo
    • Journal of Industrial Technology
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    • v.31 no.A
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    • pp.123-128
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    • 2011
  • In this study, procedures, a power performance testing system of Wind Turbine System Research Center of Kangwon National University is introduced. Test prodedures and results are presented on a stand-alone vertical-axis 200W wind turbine manufactured by Geum-Poong Energy Inc.. Power performance test is performed according to IEC standard. The test results are compared with the power performance standard. Also, the effects of normalization and disturbed sectors are considered.

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Active Use of DFIG-Based Variable-Speed Wind-Turbine for Voltage Control in Power System Operation

  • Ko, Hee-Sang;Yoon, Gi-Gab;Hong, Won-Pyo
    • Journal of Electrical Engineering and Technology
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    • v.3 no.2
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    • pp.254-262
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    • 2008
  • This paper presents an active use of doubly-fed induction-generator(DFIG)-based variable-speed wind-turbine for voltage control in power system operation. For reasonable simulation studies, a detail dynamic model of a DFIG-based wind-turbine grid-connected system is presented. For the research objective, an innovative reactive power control scheme is proposed that manipulates dynamically the reactive power from the voltage source converter(VSC) with taking into account its operating state and limits.

Cost-Effective Converters for Micro Wind Turbine Systems using PMSG

  • Park, Hong-Geuk;Lee, Dong-Choon;Kim, Heung-Geun
    • Journal of Power Electronics
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    • v.8 no.2
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    • pp.156-162
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    • 2008
  • This paper proposes a low-cost power converter for micro wind turbine systems using permanent magnet synchronous generators (PMSG). The proposed converter consists of a two-leg three-phase PWM inverter for the generator control and a single-phase half-bridge PWM converter which is connected to the utility grid. For the two separate DC-link voltages, a balancing control is added and the adverse effect of the DC-link voltage ripples on the inverter output voltage is compensated. The control performance of the proposed converter topology for the micro wind turbine system is shown by the simulation results using PSIM software.

Ride-Through Technique for PMSG Wind Turbines using Energy Storage Systems

  • Nguyen, Thanh Hai;Lee, Dong-Choon
    • Journal of Power Electronics
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    • v.10 no.6
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    • pp.733-738
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    • 2010
  • This paper deals with a ride-through technique for permanent-magnet synchronous generator (PMSG) wind turbine systems using energy storage systems (ESS). A control strategy which consists of current and power control loops for the energy storage systems is proposed. By increasing the generator speed, some portion of the turbine power can be stored in the system inertia. Therefore, the required energy capacity of the ESS can be decreased, which results in a low-cost system. In addition, the power fluctuations due to wind speed variations can be smoothened by controlling the ESS appropriately. The effectiveness of the proposed method is verified not only by the simulation results for a 2[MW] PMSG wind turbine system, but also by the experiment results for a reduced-scale turbine simulator.

A Study of the Wind Turbine System by Variable Speed Hydraulic Torque Converter (가변속 유체토르크 컨버터를 이용한 풍력발전 시스템 연구)

  • Chong, Kyong-Won;Kim, Dong-Yong;Kim, Hee-Kyu
    • Proceedings of the KIEE Conference
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    • 2009.07a
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    • pp.1114_1115
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    • 2009
  • The wind most of the century, the average wind speed in the coast area 6m/s~8m/s operation as a large wind power generators is not enough to produce. But the generator of proposed wind turbine system is connected to Hydraulic torque converter is the actual development of this usage, the low investment and economic effects appear to be much lower there is. In case of the proposed wind turbine system, is possible to make torque transmission long distance, set up generator somewhere in between the tower or the ground as well as, nacelle weight can be greatly down.

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Simulation for balanced fault of a grid-connected wind generation system (계통연계 풍력발전 시스템의 평형고장에 대한 시뮬레이션)

  • Ahn, Duck-Keun;Ro, Kyoung-Soo
    • Proceedings of the KIEE Conference
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    • 2004.11b
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    • pp.17-20
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    • 2004
  • This paper presents a modeling and simulation of a grid-connected wind turbine generation system with respect to wind variations and three-phase fault in the system. It describes the modeling of the wind turbine system including the drive train model, induction generator model, and grid-interface model on MATLAB/Simulink. Case studies demonstrate that the pitch angle control is carried out to achieve maximum power extraction for wind speed variations and the duration of a fault on the system influences on the output of the wind turbine generator.

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Design and Performance Analysis of Axial-Flux Permanent-Magnet Generator for Wind Energy System Applications (횡자속형 영구자석 풍력발전기 설계 및 특성해석)

  • Hwang, Don-Ha;Kang, Do-Hyun;Kim, Yong-Joo;Bae, Sung-Woo;Choi, Kyeong-Ho;Kim, Dong-Hee
    • Proceedings of the KIEE Conference
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    • 2002.07b
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    • pp.949-951
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    • 2002
  • Permanent-magnet (PM) synchronous generator is feasible for use with a wind turbine, because the generator for wind power requires variable-speed generation, light weight, and high torque. In this paper, basic design and construction of an axial-flux permanentmagnet generator with power output at 60 [Hz], 300 [r/min] for wind energy system is introduced. Finite-element method (FEM) is applied to analyze generator performance. In order to save time, equivalent analysis model is developed. The performance of the proposed generator at no-load and resistive load are compared, and power output and voltage at various speed and loads are compared as well. The results of FE analysis show that this PM generator is a useful solution for small-scale wind-turbine applications.

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A design of vertical axis wind power generating system combined with Darrieus-Savonius for adaptation of variable wind speed (다변풍속 적응형 Darrieus-Sauonius 초합 수직푹 풍력발전 시스템의 설계)

  • 서영택;오철수
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.45 no.2
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    • pp.185-192
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    • 1996
  • This paper presents a design of vertical axis Darrieus wind turbine combine with Savonius for wind-power generating system to be adapted for variable wind speed. The wind turbine consists of two troposkien- and four Savonius-blades. Darrieus turbine is designed with diameter 9.4[m], chord length 380[mm], tip speed ratio 5. Savonius turbine is designed with diameter 1.8[m], height 2[m], tip speed ratio 0.95. The design of turbine is laid for the main data of rated wind speed 10[m/s], turbine speed 101.4[rpm]. The generating power is estimated to maximum power 20[kW], and this is converted to commercial power line by means of three phase synchronous generator-inverter system. Generating system is designed for operation on VSVF(variable speed variable frequency) condition and constant voltage system.

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