Robust DC-Link Voltage Control of a Full-Scale PMSG Wind Turbine for Effective Integration in DC Grids

2017 ◽  
Vol 32 (5) ◽  
pp. 4021-4035 ◽  
Author(s):  
Masoud Davari ◽  
Yasser Abdel-Rady I. Mohamed
2015 ◽  
Vol 14 (5-6) ◽  
pp. 729-766 ◽  
Author(s):  
Franck Bertagnolio ◽  
Helge Aa. Madsen ◽  
Christian Bak ◽  
Niels Troldborg ◽  
Andreas Fischer

2017 ◽  
Vol 50 (1) ◽  
pp. 10985-10991 ◽  
Author(s):  
Christian Leisten ◽  
Uwe Jassmann ◽  
Johannes Balshüsemann ◽  
Mathias Hakenberg ◽  
Dirk Abel

Author(s):  
Paul Schünemann ◽  
Timo Zwisele ◽  
Frank Adam ◽  
Uwe Ritschel

Floating wind turbine systems will play an important role for a sustainable energy supply in the future. The dynamic behavior of such systems is governed by strong couplings of aerodynamic, structural mechanic and hydrodynamic effects. To examine these effects scaled tank tests are an inevitable part of the design process of floating wind turbine systems. Normally Froude scaling is used in tank tests. However, using Froude scaling also for the wind turbine rotor will lead to wrong aerodynamic loads compared to the full-scale turbine. Therefore the paper provides a detailed description of designing a modified scaled rotor blade mitigating this problem. Thereby a focus is set on preserving the tip speed ratio of the full scale turbine, keeping the thrust force behavior of the full scale rotor also in model scale and additionally maintaining the power coefficient between full scale and model scale. This is achieved by completely redesigning the original blade using a different airfoil. All steps of this redesign process are explained using the example of the generic DOWEC 6MW wind turbine. Calculations of aerodynamic coefficients are done with the software tools XFoil and AirfoilPrep and the resulting thrust and power coefficients are obtained by running several simulations with the software AeroDyn.


2018 ◽  
Vol 32 (11) ◽  
pp. 5097-5104 ◽  
Author(s):  
Qiang Ma ◽  
Zong-Wen An ◽  
Jian-Xiong Gao ◽  
Hai-Xia Kou ◽  
Xue-Zong Bai

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