VAWT History

Application of the Darrieus Vertical Axis Wind Turbine to Synchronous Electrical Power Generation

J. F. Banas, E. G. Kadlec, W. N. Sullivan, Sandia National Laboratories, March 1975

This report suggests that the Darrieus vertical-axis wind turbine may be particularly well-suited for driving a synchronous generator in parallel with a synchronizing electrical power network. Aerodynamic characteristics of the Darrieus wind turbine can be such that no torque regulation mechanisms are required on the turbine, providing the generator is properly sized. Synchronization to maintain constant turbine rotational speed under any wind conditions is provided by the network. To point out operational differences, a discussion is included of synchronous power generation usin...

A Retrospective of VAWT Technology

Jerbert J. Sutherland, Dale E. Berg, and Thomas D. Ashwill, Sandia National Laboratories, January 2012

The study of Vertical-Axis Wind Turbine (VAWT) technology at Sandia National Laboratories started in the 1970’s and concluded in the 1990’s. These studies concentrated on the Darrieus configurations because of their high inherent efficiency, but other configurations (e.g., the Savonius turbine) were also examined. The Sandia VAWT program culminated with the design of the 34-m ‘Test Bed’ Darrieus VAWT. This turbine was designed and built to test various VAWT design concepts and to provide the necessary databases to validate analytical design codes and algorithms. Using the...

Under the auspices of the “Government/Industry Wind Technology Applications Project” [“Letter of Interest” (LOI) Number RC-1-11101], FloWind Corp. has successfully developed, tested, and delivered a high-energy rotor upgrade candidate for their 19-meter Vertical Axis Wind Turbine. The project included the demonstration of the innovative extended height-to-diameter ratio concept, the development of a continuous-span singlepiece composite blade, the demonstration of a continuous blade manufacturing technique, the utilization of the Sandia National Laboratori...

Vertical Axis Wind Turbines Current Technologies and Future Trends

J. Damota, I. Lamas, A. Couce, J. Rodriguez, April 2015

This paper, based on the pursuit of scientific articles published and recorded in the last five years (2010-2014) patents on VAWT technology, gives an image of the current situation of the treated technology. From data extracted we know: The different models that are working with different geometries, distinguishing between Savonius, Darrieus, hybrid of both (D+S), models dedicated to Offshore technology and what can be applied generally (D&S) on both types of VAWT (controllers, electric generators, materials ...).The main countries that research and develop VAWT technology, globally and...

Vertical-Axis Wind Turbines Revisited A Sandia Perspective

Matt Barone and Josh Paquette, Sandia National Laboratories, U.S. Department of Energy, 01 June 2012

This document is a slide show that  summarizes Sandia National Laboratories' work on the Darrieus-type VAWTs from the 1970s through to the commercialization of this VAWT technology with the FloWind VAWTs in the 1980s and 1990s.  It is a slideshow presentation of the work in A Retrospective of VAWT Technology by Sutherland, Berg and Ashwill

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