HYBRID INTELLIGENT OPTIMIZATION METHODS FOR OPTIMAL DESIGN OF HORIZONTAL-AXIS WIND TURBINE BLADES
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 30, Vol 5, Issue 7
Abstract
Designing the optimal shape of MW wind turbine blades is provided in a number of cases through evolutionary algorithms associated with mathematical modeling (Blade Element Momentum Theory). Evolutionary algorithms, among the optimization methods, enjoy many advantages, particularly in stability. However, they usually need a large number of function evaluations. Since there are a large number of local extremes, an optimization method has to find the global extreme accurately. The present paper introduces a new population-based hybrid algorithm called GeneticBased Bees Algorithm (GBBA). This algorithm is meant to design the optimal shape for larg scale wind turbine blades. The current method employs crossover and neighborhood searching operators taken from the respective Genetic Algorithm (GA) and Bees Algorithm (BA) to provide a method with good performance in accuracy and speed convergence. Different blade designs, 21 to be exact, were considered based on the chord length, twist angle and tip speed ratio using GA results. They were compared with BA and GBBA optimum design results targeting the power coefficient and solidity. The results suggest that the final shape, obtained by the proposed hybrid algorithm, performs better compared to either BA or GA. Furthermore, the accuracy and speed convergence increases when the GBBA is employed.
Authors and Affiliations
KH. Hemmatpour
Keywords
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- EP ID EP164647
- DOI 10.5281/zenodo.57958
- Views 88
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