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Proceedings Article

Efficiency improvement of a new vertical axis wind turbine by individual active control of blade motion

[+] Author Affiliations
In Seong Hwang, Seung Yong Min, In Oh Jeong, Yun Han Lee, Seung Jo Kim

Seoul National Univ. (South Korea)

Proc. SPIE 6173, Smart Structures and Materials 2006: Smart Structures and Integrated Systems, 617311 (April 05, 2006); doi:10.1117/12.658935
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From Conference Volume 6173

  • Smart Structures and Materials 2006: Smart Structures and Integrated Systems
  • Yuji Matsuzaki
  • San Diego, CA | February 26, 2006

abstract

In this paper, a research for the performance improvement of the straight-bladed vertical axis wind turbine is described. To improve the performance of the power generation system, which consists of several blades rotating about axis in parallel direction, the cycloidal blade system and the individual active blade control system are adopted, respectively. Both methods are variable pitch system. For cycloidal wind turbine, aerodynamic analysis is carried out by changing pitch angle and phase angle based on the cycloidal motion according to the change of wind speed and wind direction, and control mechanism using the cycloidal blade system is realized for 1kw class wind turbine. By this method, electrical power is generated about 30% higher than wind turbine using fixed pitch angle method. And for more efficient wind turbine, individual pitch angle control of each blade is studied. By maximizing the tangential force in each rotating blade at the specific rotating position, optimal pitch angle variation is obtained. And several airfoil shapes of NACA 4-digit and NACA 6-series are studied. Aerodynamic analysis shows performance improvement of 60%. To realize this motion, sensing and actuating system is designed.

© (2006) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

In Seong Hwang ; Seung Yong Min ; In Oh Jeong ; Yun Han Lee and Seung Jo Kim
"Efficiency improvement of a new vertical axis wind turbine by individual active control of blade motion", Proc. SPIE 6173, Smart Structures and Materials 2006: Smart Structures and Integrated Systems, 617311 (April 05, 2006); doi:10.1117/12.658935; http://dx.doi.org/10.1117/12.658935


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