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Viryd Technologies' CS8 Turbine Testing and Results

Viryd Technologies CS8 wind turbine. Text Version

As part of the National Renewable Energy Laboratory and U.S. Department of Energy (NREL/DOE) Independent Testing project, NREL is testing Viryd Technologies' CS8 small wind turbine at the National Wind Technology Center (NWTC). The CS8 is an upwind, horizontal-axis, three-bladed, stall controlled turbine rated at 8 kilowatts (kW). It has an 8.5-meter rotor diameter and is mounted on a guyed tilt-up lattice tower with a hub height of 24.9 meters. The CS8 uses a single-phase, grid-connected, induction generator that operates at 240 volts AC.

Testing Summary

Supporting data and explanations for data included in this table are provided in the final reports.

Graph showing the kilowatt hours by date for the Viryd turbine.  It starts at October 6, 2011 at 0 kilowatt-hours and gradually rises to 4,551 by May 6, 2013.
Activity Status
Award of Grant December 1, 2009
Preparation for Installation Foundation installed: August 17, 2010
Components received: September 7, 2011
Documentation received: August 26, 2011
Turbine Installation September 22, 2011
Turbine Commissioning Viryd commissioning: October 6, 2011
Readiness verification: November 22, 2011
Data Acquisition System check: October 12, 2011
Turbine O&M and Testing  
Safety and Function Test Safety and Function Test Report for the Viryd CS8 Wind Turbine
Power Performance Test Power Performance Test Report for the Viryd CS8 Wind Turbine
Hrs of valid data (60 required)
Bins completed (3.5-14 m/s required)
Acoustic Noise Test Acoustic Noise Test Report for the Viryd CS8 Wind Turbine
Power Quality Test Not Applicable
Duration Test Duration Test Report for the Viryd CS8 Wind Turbine
Months of operation (6 required)
Hours of power production (2,500 required)
Hours of power production in winds greater than 10.2 m/s (250 required)
Hours of power production in winds greater than 15.3 m/s (25 required)
kWh of production, cumulative
Turbine Removed May 7, 2013
Post-test Inspection Complete
Final Documentation Complete
Project Review Meeting Complete