Multi-objective Optimization of Micro Wind Generator Blade Structure Parameters based on Response Surface Methodology and Non-dominated Sorting Genetic Algorithm III

Wang, C.; Luo, D. Y.; Fan, H. L.; Yang, H.; Wei, T. L.

doi:10.47176/jafm.18.11.3575

Multi-objective Optimization of Micro Wind Generator Blade Structure Parameters based on Response Surface Methodology and Non-dominated Sorting Genetic Algorithm III

Document Type : Regular Article

Authors

¹ College of Mechanical and Vehicle Engineering, Bengbu University, Bengbu, Anhui, 233030, China

² Anhui Province Additive Manufacturing Engineering Research Center, Bengbu University, Bengbu, Anhui, 233030, China

³ College of Intelligent Manufacturing, Anhui Science and Technology University, Bengbu, Anhui, 233030, China

10.47176/jafm.18.11.3575

Abstract

This study investigates the effect of blade structural parameters on the power generation performance—specifically output current and voltage of a micro wind generator, using experimental testing and multi-objective optimization. The influence of blade diameter (BD), blade inclination angle (BA), blade number (BN), and blade root draft angle (BRA) on generator performance is analyzed. The Box-Behnken Design (BBD) of response surface methodology (RSM) is employed to assess variance and to establish a quadratic polynomial model linking structural parameters to performance metrics. Computational fluid dynamics (CFD) simulations are used to interpret experimental observations. The NSGA-III algorithm is applied to optimize the parameter set. Results indicate that BRA has negligible effect on performance. The ranking of influence on output current and voltage is BN > BA > BD, and on blade weight is BN > BD > BA. The optimal configuration comprises a BD of 105 mm, an inclination angle of 35.92°, and 6 blades. Validation by experiment and CFD confirms that this configuration yields higher output current and voltage with only a modest increase in blade weight, providing practical guidance for the structural design of micro wind generators.

Keywords

Main Subjects

Turbulent Flows

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