Aerodynamic and electrical evaluation of a VAWT farm control system with passive rectifiers and mutual DC-bus

Goude, Anders; Bülow, Fredrik

doi:10.1016/j.renene.2013.05.028

Cited by 9 publications

(8 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The farm operates at a mean wind of 7 m/s during 1200 s. The wind is correlated, but the specific wind at each turbine is different. The mean wind of 7 m/s corresponds to a power of approximately 50 kW from each turbine resulting in a total power from the farm close to 200 kW [27]. The study shows that there are local differences in power production between the two electrical system topologies.…”

Section: Simulations Of Farm Operationmentioning

confidence: 85%

“…In the work presented in [26,27] farm operation of VAWTs is examined with the use of the vortex method coupled to an electrical system. The focus is on different farm configurations and the power absorbed as a function of the electrical system topology.…”

Section: Simulations Of Farm Operationmentioning

confidence: 99%

“…Work has also been carried out on how the vortex method calculations can be accelerated through the fast multipole methods and the usage of GPUs [62,63]. The vortex method has been applied to calculate the effects of flow confinement on the turbine performance [64], and also to calculate the performance of farms of vertical axis turbines [26,27,65,66] The work on improving the models is ongoing and a study looking at finding a suitable dynamic stall model for vertical axis wind turbines is presented in [67]. A study comparing two dynamic stall models is presented in [68] and a study using a free vortex model coupled with a dynamic stall model to further investigate dynamic stall effects on VAWT operation is presented in [69].…”

Section: Research On Aerodynamics For Vertical Axis Turbinesmentioning

confidence: 99%

See 2 more Smart Citations

A Review of Research on Large Scale Modern Vertical Axis Wind Turbines at Uppsala University

2016

View full text Add to dashboard Cite

This paper presents a review of over a decade of research on Vertical Axis Wind Turbines (VAWTs) conducted at Uppsala University. The paper presents, among others, an overview of the 200 kW VAWT located in Falkenberg, Sweden, as well as a description of the work done on the 12 kW prototype VAWT in Marsta, Sweden. Several key aspects have been tested and successfully demonstrated at our two experimental research sites. The effort of the VAWT research has been aimed at developing a robust large scale VAWT technology based on an electrical control system with a direct driven energy converter. This approach allows for a simplification where most or all of the control of the turbines can be managed by the electrical converter system, reducing investment cost and need for maintenance. The concept features an H-rotor that is omnidirectional in regards to wind direction, meaning that it can extract energy from all wind directions without the need for a yaw system. The turbine is connected to a direct driven permanent magnet synchronous generator (PMSG), located at ground level, that is specifically developed to control and extract power from the turbine. The research is ongoing and aims for a multi-megawatt VAWT in the near future.

show abstract

Section: Simulations Of Farm Operationmentioning

confidence: 85%

Section: Simulations Of Farm Operationmentioning

confidence: 99%

Section: Research On Aerodynamics For Vertical Axis Turbinesmentioning

confidence: 99%

See 1 more Smart Citation

A Review of Research on Large Scale Modern Vertical Axis Wind Turbines at Uppsala University

2016

View full text Add to dashboard Cite

show abstract

“…Goude [33,34] evaluated a VAWT farm under the control of passive rectifiers and mutual DC-BUS. The vortex model was used to evaluate the aerodynamic performance of VAWTs, and coupled with an electromechanical system model.…”

Section: Application Of Modelsmentioning

confidence: 99%

“…To analyze coupling of an aerodynamic model with electric simulation Evaluation of VAWT farms under the control of passive rectifiers and mutual DC-BUS [33]; analysis and evaluation of the control parameters of three VAWTs by coupling an aerodynamic model with electric simulation [34] To evaluate aerodynamic noise Prediction and analysis of low-frequency noise produced by VAWT rotation [35] Computational fluid dynamics 2D CFD To study the aerodynamic performances Study on the impact of steady and unsteady winds on performances of a wind turbine [49]; aerodynamic calculations of 20 types of blades (symmetrical and asymmetrical), and analysis of the impact of blade shape and solidity on aerodynamic performances [51]; study on the aerodynamic performance of an airfoil under the freezing condition [52]; investigation on the dynamic stall phenomenon [53] To evaluate aerodynamic noise Analysis of aerodynamic noise of a Darrieus VAWT, and the impact of blade shape, tip-speed ratio, solidity and distance on noise [50] To improve efficiency Impact of fixed and oscillating flap on generation performance of a VAWT [54]; optimizing the design of the omni-direction-guide-vane (ODGV) [55] To evaluate the effect of meshing on computational results…”

Section: Efficiency Improvementsmentioning

confidence: 99%

Darrieus vertical axis wind turbine: Basic research methods

Jin

Zhao

Ke-jun

et al. 2015

Renewable and Sustainable Energy Reviews

123

View full text Add to dashboard Cite

Intracycle RPM control for vertical axis wind turbines

Sadman Sakib,

Todd Griffith,

Hossain

et al. 2023

Wind Energy

View full text Add to dashboard Cite

The wind energy market is currently dominated by horizontal axis wind turbines (HAWTs); however, vertical axis wind turbines (VAWTs) are emerging as a design alternative, especially for deep‐water offshore siting due to their low center of gravity, ease of access to drivetrain components, and overall simplicity. Due to the absence of a pitch mechanism in large‐scale Darrieus VAWTs, stall control has often been used to manage power and loads. Introducing a pitching mechanism in H‐type VAWTs has been studied, but this diminishes the mechanical simplicity advantage, and the use of a pitching mechanism in a large‐scale Darrieus‐type VAWT is not practical. This work examines an innovative, alternative method to control the rotor dynamics of a large‐scale 5 MW VAWT to maximize power while constraining loads without introducing any new or complex mechanical elements. This control strategy is termed intracycle revolution per minute (RPM) control, where the rotational speed of the turbine is allowed to vary in an optimal fashion with the azimuthal location of blades as opposed to typical constant RPM operation. An optimization framework is formulated for an open‐loop optimal control problem and solved to maximize power subject to constraints on aerodynamic design loads. Results are presented to demonstrate the benefits and the performance limits of intracycle RPM control for large‐scale 5 MW Darrieus VAWTs, namely, (1) power production (quantified in terms of AEP) that can be increased subject to baseline load limits and (2) opportunities to significantly increase AEP or decrease loads via intracycle RPM control that are examined for both two‐bladed and three‐bladed VAWTs.

show abstract

Aerodynamic and electrical evaluation of a VAWT farm control system with passive rectifiers and mutual DC-bus

Cited by 9 publications

References 12 publications

A Review of Research on Large Scale Modern Vertical Axis Wind Turbines at Uppsala University

A Review of Research on Large Scale Modern Vertical Axis Wind Turbines at Uppsala University

Darrieus vertical axis wind turbine: Basic research methods

Intracycle RPM control for vertical axis wind turbines

Contact Info

Product

Resources

About