• Corpus ID: 17852316

A new active speed stall control compared to pitch control for a direct-drive wind turbine

  title={A new active speed stall control compared to pitch control for a direct-drive wind turbine},
  author={Deok-je Bang and Henk Polinder and Jan Abraham Ferreira and R.P.J.O.M. van Rooij},
The objective of this paper is to assess 10 MW directdrive permanent-magnet (DDPM) generator systems with different control strategies namely pitch control and active speed stall control. In the active speed stall control concept, there is no pitch mechanism, and the rotor speed is actively controlled by the generator to control the output power. The active speed stall control wind turbine with the DDPM generator system may be an attractive concept especially for offshore. This turbine has high… 
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Performance and Structural Load Analysis of Small and Medium Wind Turbines Operating with Active Speed Stall Control versus Pitch Control
The objective of this paper is to investigate the performance pitch and active speed stall control, and their impact on the structural loads of small and medium wind turbines (SMWTs). Large wind
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10 MW Wind Turbine Direct-Drive Generator Design with Pitch or Active Speed Stall Control
It is shown that for a thorough evaluation of active speed stall control, more knowledge is required about changes in the wind speed, and a considerable increase in generator system cost is necessary to enable active speed stalls control.
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The thesis deals with the issue of cost reduction in direct-drive generators for wind turbines. Today, the combination gearbox-medium-speed (1000-2000 rpm) induction generator largely dominates the
Comparison of direct-drive and geared generator concepts for wind turbines
The DFIG1G seems the most attractive in terms of energy yield divided by cost, but the DDPMG has the highest energy yield, but although it is cheaper than the DDSG, it is more expensive than the generator systems with gearbox.
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According to the analysis, a typical generator-gear solution of the wind power plant can be replaced by a multipole radial-flux PM synchronous machine.
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Abstract This paper gives an overview of electrical conversion systems for wind turbines. First, the basics of wind energy conversion with wind turbines are reviewed and requirements with respect to
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  • 2004
The Zephyros Z72 is a gearless variable speed wind turbine with a direct driven PM synchronous generator with a rotor diameter of 70 m. This article describes the design process, testing and
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This thesis presents design, optimization, construction and test of radial-flux low-speed rare-earth high-energy permanent-magnet (PM) electrical machines with new topology. Two of the designed
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Preface. Glossary of Symbols. Development of Large Wind Turbines. Wind Turbine Technology and Design Concepts. Design Factors Affecting Weight and Costs. Modelling of Wind Turbine Weight and Costs.