WHI Grants

WHI-CEC EPIC Program Wind Grant  Application - 20 June 2017

Kevin Wolf, Wind Harvest International, June 2017

In June of 2017 WHI submitted a grant proposal to the California Energy Commission for the project "Researching and developing the potential of VAWTs to double capacities of California’s wind resource regions while preventing harm to birds – Phase I." The following documents were submitted as part of that proposal:

Related Research (CEC EPIC Grant) - Kinetic Energy Flux Measured by Lidar and Its Impacts on Wind Turbines Power Performance

Antoine Bégué*, Beatriz Canadillas, Thomas Neumann, Harald Mellinghoff, Deutsches Windenergie-Institut, Wilhelmshaven, Germany

In the scope of the RAVE (Research at Alpha Ventus) – LIDAR project, wind profile measurements from LIDAR (Leosphere - WindCube) are collected at the offshore platform FINO1. In the present work, some atmospheric parameters, such as the wind shear and the turbulence intensity, are investigated. The kinetic energy flux passing through the rotor area is also calculated by using LIDAR wind speed measurements at different heights. It is compared to the kinetic energy flux resulting only from the wind speed at hub height, as established in the IEC 61400-12-1 [1]. A new wind speed concept, the so-called “equivalent wind speed”, is defined as proposed by Risø DTU [2]. This wind speed takes into account the wind shear...

WHI-CEC EPIC Program Wind Grant Application - Scoring and Review Documents

California Energy Commission

Related Research (CEC EPIC Grant) - Doppler Lidar Investigation Of Wind Turbine Wake Characteristics And Atmospheric Turbulence Under Different Surface Roughness

XiaoChun Zhai, SongHua Wu, Bingyi Liu, Optics Express, 2017

Four field experiments based on Pulsed Coherent Doppler Lidar with different surface roughness have been carried out in 2013-2015 to study the turbulent wind field in the vicinity of operating wind turbine in the onshore and offshore wind parks. The turbulence characteristics in ambient atmosphere and wake area was analyzed using transverse structure function based on Plane Position Indicator scanning mode. An automatic wake processing procedure was developed to determine the wake velocity deficit by considering the effect of ambient velocity disturbance and wake meandering with the mean wind direction. It is found that the turbine wake obviously enhances the atmospheric...

This unprecedented research and development is needed before vertical axis wind turbines (VAWTs) can be commercialized and installed around and under horizontal axis wind turbines (HAWTs). This is because, wind farm owners won’t invest in near-ground wind turbines until it is proven that the wake and turbulence they create will not harm their existing HAWTs, and the turbines are certified with a good power performance curve and validated aeroelastic model. This R&D project will provide data and analysis on the effectiveness of the coupled vortex effect in longer VAWT arrays. In the process, the use of the WHI Harvester 70 VAWTs in the project will advance their readiness for commercial financing and large scale development.

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