Darrieus vertical axis wind turbine for power generation II: Challenges in HAWT and the opportunity of multi-megawatt Darrieus VAWT development

Tjiu, Willy; Marnoto, Tjukup; Mat, Sohif; Ruslan, Mohd Hafidz; Sopian, Kamaruzzaman

doi:10.1016/j.renene.2014.10.039

Cited by 169 publications

(55 citation statements)

References 56 publications

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“…Any noise or high frequency oscillations on the rotational speed measurement will strongly impact the power reference according to (3). Therefore, filtering of the rotational speed measurement is reasonable.…”

Section: Rotational Speed Filtermentioning

confidence: 99%

“…While the three-bladed horizontal axis wind turbine is a common sight, the vertical axis wind turbines (VAWTs) are still unusual as commercial energy producers. Since the invention of the lift-based VAWT in the 1920s, several vertical axis concepts have been studied, and the technology is still subject to active research by companies and universities [1][2][3]. Possible benefits are lower maintenance need, low noise and lower center of mass [4].…”

Section: Introductionmentioning

confidence: 99%

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Critical Speed Control for a Fixed Blade Variable Speed Wind Turbine

2017

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A critical speed controller for avoiding a certain rotational speed is presented. The controller is useful for variable speed wind turbines with a natural frequency in the operating range. The controller has been simulated, implemented and tested on an open site 12 kW vertical axis wind turbine prototype. The controller is based on an adaptation of the optimum torque control. Two lookup tables and a simple state machine provide the control logic of the controller. The controller requires low computational resources, and no wind speed measurement is needed. The results suggest that the controller is a feasible method for critical speed control. The skipping behavior can be adjusted using only two parameters. While tested on a vertical axis wind turbine, it may be used on any variable speed turbine with the control of generator power.

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Section: Rotational Speed Filtermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Critical Speed Control for a Fixed Blade Variable Speed Wind Turbine

2017

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“…The drive system of Vertical Axis Wind Turbine (VAWT) is installed on the bottom, which has little effect on the dynamic behavior of the tower. This makes floating VAWT more advantageous in the development of large-scale offshore wind power [2].…”

Section: Introductionmentioning

confidence: 99%

Aerodynamics and Motion Performance of the H-Type Floating Vertical Axis Wind Turbine

et al. 2018

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Aerodynamics and motion performance of the floating vertical wind turbine (VAWT) were studied in this paper, where the wind turbine was H-type and the floating foundation was truss spar type. Based on the double-multiple-stream-tube theory, the formulae were deduced to calculate the aerodynamic loads acting on the wind turbine considering the motions of the floating foundation. The surge-heave-pitch nonlinear coupling equations of the H-type floating VAWT were established. Aerodynamics and motion performance of a 5 MW H-type floating VAWT was studied, and the effect of the floating foundation motions on the aerodynamic loads was analyzed. It is shown that the motions of the floating foundation on the aerodynamics cannot be ignored. The motion of the H-type floating VAWT was also compared with that of the Φ-type floating VAWT: they have the same floating foundation, rated output power, mooring system and total displacement. The results show that the H-type floating VAWT has better motion performance, and the mean values of surge, heave and pitch of the H-type floating VAWT are much smaller comparing with the Φ-type floating VAWT.

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“…Among these advantages are its independence from wind direction and the fact that it can also work at lower wind speed values. The flow in such a turbine is entirely non-stationary and is dictated by the phenomenon of dynamic stall [1][2]. Numerous scientific papers are based on the analysis of this phenomenon to determine its effects on the efficiency of a VAWT [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Turbulence Intensity Effects on the Vertical Axis Wind Turbine Starting Efficiency

Mălăel¹,

Drãgan²,

Gherman³

2016

DAAAM Proceedings

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In this paper, the authors performed a series of numerical analysis using CFD methods for the study of turbulence intensity effects on the efficiency of a wind turbine vertical axis Darrieus type, at the starting point. These analyzes have the tip speed ratio value (TSR) equal to 1. The solver used is based on pressure and it uses the Simple Method (semi-implicitmethod-pressure-linked-equation). To determine the influence of the turbulence intensity were imposed on border conditions, the intensity values between 1 and 20%. Finally, are represented variations of moment and power coefficients for a full rotation (0-360 degrees). The magnitude vorticity variation is also presented for all the studied cases.

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Darrieus vertical axis wind turbine for power generation II: Challenges in HAWT and the opportunity of multi-megawatt Darrieus VAWT development

Cited by 169 publications

References 56 publications

Critical Speed Control for a Fixed Blade Variable Speed Wind Turbine

Critical Speed Control for a Fixed Blade Variable Speed Wind Turbine

Aerodynamics and Motion Performance of the H-Type Floating Vertical Axis Wind Turbine

Turbulence Intensity Effects on the Vertical Axis Wind Turbine Starting Efficiency

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