Small Wind Research Turbine: Final Report

Corbus, D.; Meadors, M.

doi:10.2172/15020498

Cited by 20 publications

(22 citation statements)

References 3 publications

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“…8 show that the power curve found with the model presented in this paper is a reasonable approximation of the measured one. It has been documented that the FAST model turbine spins too fast at and above 10 m/s due to the lack of blade tip torsion in FAST [7]. Despite this, the power output was somewhat depressed between 11 and 13 m/s because of greater i 2 R losses, which only a detailed model such as this accounts for.…”

Section: A 10 Kw System Model Resultsmentioning

confidence: 98%

“…The SWRT is a modified version of the Bergey Excel 10 as it was produced in 2005 [7]. It is a 3-bladed, horizontal axis, upwind turbine with passive yaw.…”

Section: B Wind Turbine Modelsmentioning

confidence: 99%

“…This control scheme is called feedback linearization. The setpoint, , passed to the rectifier is (7) where is the output of the PI controller shown in Fig. 3.…”

Section: A Field-oriented Control (Foc)mentioning

confidence: 99%

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Simulation of Electromechanical Interactions of Permanent-Magnet Direct-Drive Wind Turbines Using the FAST Aeroelastic Simulator

Ochs

Miller

White

2014

IEEE Trans. Sustain. Energy

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Section: A 10 Kw System Model Resultsmentioning

confidence: 98%

“…The SWRT is a modified version of the Bergey Excel 10 as it was produced in 2005 [7]. It is a 3-bladed, horizontal axis, upwind turbine with passive yaw.…”

Section: B Wind Turbine Modelsmentioning

confidence: 99%

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Simulation of Electromechanical Interactions of Permanent-Magnet Direct-Drive Wind Turbines Using the FAST Aeroelastic Simulator

Ochs

Miller

White

2014

IEEE Trans. Sustain. Energy

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“…This [19,20], with further details of this process found in [16,21]. Key to the development of this aeroelastic model is the input of aerofoil properties that govern rotor performance, turbine dynamics, and output power.…”

Section: Aeroelastic Modelling 211 Development Of the Fast Modelmentioning

confidence: 99%

The suitability of the IEC 61400-2 wind model for small wind turbines operating in the built environment

Evans

Bradney

et al. 2017

Renew. Energy Environ. Sustain.

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Abstract. This paper investigates the applicability of the assumed wind fields in International Electrotechnical Commission (IEC) standard 61400 Part 2, the design standard for small wind turbines, for a turbine operating in the built environment, and the effects these wind fields have on the predicted performance of a 5 kW Aerogenesis turbine using detailed aeroelastic models developed in Fatigue Aerodynamics Structures and Turbulence (FAST). Detailed wind measurements were acquired at two built environment sites: from the rooftop of a Bunnings Ltd. warehouse at Port Kennedy (PK) (Perth, Australia) and from the small wind turbine site at the University of Newcastle at Callaghan (Newcastle, Australia). For both sites, IEC 61400-2 underestimates the turbulence intensity for the majority of the measured wind speeds. A detailed aeroelastic model was built in FAST using the assumed wind field from IEC 61400-2 and the measured wind fields from PK and Callaghan as an input to predict key turbine performance parameters. The results of this analysis show a modest increase in the predicted mean power for the higher turbulence regimes of PK and Callaghan as well as higher variation in output power. Predicted mean rotor thrust and blade flapwise loading showed a minor increase due to higher turbulence, with mean predicted torque almost identical but with increased variations due to higher turbulence. Damage equivalent loading for the blade flapwise moment was predicted to be 58% and 11% higher for a turbine operating at Callaghan and PK respectively, when compared with IEC 61400-2 wind field. Time series plots for blade flapwise moments and power spectral density plots in the frequency domain show consistently higher blade flapwise bending moments for the Callaghan site with both the sites showing a once-per-revolution response.

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“…The benefit of horizontal wind turbine is that it is able to efficiently produce more energy from a given amount of wind. Because of this flexibility and for sustained applications, horizontal axis turbines are preferred over vertical axis turbines (Corbus and Meadors, 2005;Ahmed et al, 2010;Chantharasenawong and Tipkaew, 2010). In the wind driven turbines, the pitched blades on the turbine act like a lift device, as opposed to a drag device.…”

Section: Introductionmentioning

confidence: 99%

Degradation of Power Generation Performance due to Effects of Various Ice Shapes and Accretions on Wind Turbine Blades

Bagade¹,

Mo²,

Mazher³

2015

Energy Research Journal

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In today's world, green energy has become a key initiative as an alternative energy resource. Wind turbines are widely used to harvest wind energy in seasonal and cold environments. Although efficient, cold weather conditions negatively affects wind turbine operations due to ice formation. Damage from icing is seen on blade-tips when super-cooled water droplets that form in colder environments rapidly freeze and accumulate. Different forms of ice structures are formed along the leading edge to the trailing edge of the turbine blade and are classified into horn, rime and glaze ice. These various ice structures can cause power losses, mechanical and electrical failures and pose serious safety hazards (e.g., ice throwing). Ongoing efforts have been in place to develop anti-icing and de-icing strategies, but only a few are available on the market. In this computational study using ANSYS 14, a variable pitched National Renewable Energy Laboratory (NREL) and National Advisory Committee for Aeronautics (NACA) airfoils are used to determine the effects of various ice formations along the cord of turbine blade. Ice accretions on turbine blade can cause significant performance issues such as decreased lift and increased drag leading to performance and energy losses. Understanding the flow behavior of iced airfoil is critical in determining what geometric features of ice contributes to the performance degradation and aerodynamic failures in wind turbines. This study may help optimize future designs and implementation of ice mitigations systems to maximize turbine power output.

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Small Wind Research Turbine: Final Report

Cited by 20 publications

References 3 publications

Simulation of Electromechanical Interactions of Permanent-Magnet Direct-Drive Wind Turbines Using the FAST Aeroelastic Simulator

Simulation of Electromechanical Interactions of Permanent-Magnet Direct-Drive Wind Turbines Using the FAST Aeroelastic Simulator

The suitability of the IEC 61400-2 wind model for small wind turbines operating in the built environment

Degradation of Power Generation Performance due to Effects of Various Ice Shapes and Accretions on Wind Turbine Blades

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