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Starting improvement of micro-wind turbines operating in low wind speed regions

Amir Nazmi Afshar, P ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1080/15435075.2017.1327864
  3. Abstract:
  4. The study deals with the design and optimization of external and internal geometry of micro-wind turbines blades. A specified objective function which consists of the power coefficient and the starting time was defined and the genetic algorithm optimization technique in conjunction with the blade-element momentum theory was adopted to find the geometry of the blades including the distributions of the chord, the twist angle and also the shell thickness. Moreover, the allowable stress of the blades was considered as a constraint to the objective function. Results show that a reasonable compromise is achievable such that the starting time of the blades reduces noticeably in return for a small drop in the power coefficient. The significant improvement of the hollow blades over the solid ones indicates that the power coefficient and the starting performance could be improved through the appropriate distributions of the considered decision variables, i.e. the chord, the twist angle and also the shell thickness. © 2017 Taylor & Francis Group, LLC
  5. Keywords:
  6. Hollow blade ; Low wind speed regions ; Micro-wind turbine ; Solid blade ; Genetic algorithms ; Optimization ; Turbomachine blades ; Wind ; Wind turbines ; Blade element momentum theory ; Design and optimization ; Genetic-algorithm optimizations ; Hollow blades ; Low wind speed ; Micro-wind turbines ; Starting performance ; Starting time ; Turbine components ; Design ; Genetic algorithm ; Wind turbine ; Wind velocity
  7. Source: International Journal of Green Energy ; Volume 14, Issue 11 , 2017 , Pages 868-877 ; 15435075 (ISSN)
  8. URL: https://www.tandfonline.com/doi/abs/10.1080/15435075.2017.1327864?journalCode=ljge20