Browse wiki

From Open Energy Information

HARP Opt
Abstract HARP_Opt (Horizontal Axis Rotor Performanc
HARP_Opt (Horizontal Axis Rotor Performance Optimization) utilizes MATLAB's optimization algorithms and the National Renewable Energy Laboratory's WT-Perf blade element momentum (BEM) code to design axial-flow wind and water (i.e. hydrokinetic) turbine rotors. The code optimizes a rotor's performance for steady and uniform flows (no sheared or yawed flows). A variety of rotor control configurations can be designed using HARP_Opt, including fixed or variable rotor speed and fixed or variable blade pitch configuration and blades with circular or non-circular roots are supported. HARP_Opt can function as a single- or multiple-objective optimization code. The primary optimization objective is to maximize the turbine's annual energy production (AEP). Annual energy production is calculated using a Rayleigh, Weibull, or user-defined flow distribution. Maximum power is bounded, and maximum power point tracking (MPPT) is a combined objective with AEP. For hydrokinetic turbines, additional constraints are defined such that cavitation will not occur. An additional objective can be activated, in which HARP_Opt performs a structural optimization to minimize the blade mass. For the structural analysis, the blade is modeled as a thin shell of bulk isotropic material, and the blade mass is minimized using a maximum allowable strain as the constraint. Maximizing energy production and minimizing blade mass are conflicting objectives, thus HARP_Opt will identify the set of Pareto optimal solutions. To meet these objectives, HARP_Opt calculates the optimal blade shape (twist, chord, and airfoil/hydrofoil distributions) and optimal control of the rotor speed and blade pitch. The HARP_Opt project was funded by the US Department of Energy Water Power Program. Code development and testing was performed at the NREL and the University of Tennessee. Current Code Maintainers: * Danny Sale (University of Washington) * Michael Lawson (National Renewable Energy Laboratory)
son (National Renewable Energy Laboratory)  +
Coordinates 39.9136°, -105.2136°Latitude: 39.913696624463
Longitude: -105.21348953247
  +
Developer National Renewable Energy Laboratory +
Implementation Phase Evaluate Effectiveness and Revise as Needed  +
Language English  +
Name HARP-Opt  +
OpenEI/PageKeyword HARP-Opt  + , Energy  + , Water Power  + , National Renewable Energy Laboratory  + , HARP_Opt  + , Turbine  + , Hydrokinetic  + , Rotor  + , Optimization  +
OpenEI/Tool/CostRange Free  +
OpenEI/Tool/Keyword HARP_Opt  + , Turbine  + , Hydrokinetic  + , Rotor  + , Optimization  + , Water Power  +
OpenEI/Tool/Users Wind and Water Turbine Industry and Researchers  +
ProgramResources Software/modeling tools  +
ProgramTopics Analysis Tools  +
Screenshot HARP Opt.png +
Sector Water Power +
Tool-subcategory EERE Analysis Tools  +
ToolComplexity Moderate  +
UNRegion Northern America  +
User Interface Desktop Application  +
Website http://nrel.github.io/HARP_Opt/  +
Categories Tools , EERE Analysis Tools
Modification date
"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by Semantic MediaWiki.
15:52:41, 24 June 2014  +
hide properties that link here 
  No properties link to this page.