Optimal Design of Blade Shape for a 200 kW Class Horizontal Axis Tidal Current Turbines

Title
Optimal Design of Blade Shape for a 200 kW Class Horizontal Axis Tidal Current Turbines
Author(s)
서지혜; 이진학; 박진순; 이광수
KIOST Author(s)
Seo, Jihye(서지혜)Yi, Jin Hak(이진학)
Publication Year
2016-10-26
Abstract
Ocean energy is one of the promising renewable energy resources. In particular, South Korea is one of countries that have large amount of tidal current energy for the economically and technically feasible development of tidal current power plant. In this study, based on the design code, HARP_Opt (Horizontal Axis Rotor Performance Optimizer) developed by NREL (National Renewable Energy Laboratory) in the United States, applying BEMT (Blade Element Momentum Theory) and GA (Genetic Algorithm), the optimal design of blade shape and the performance evaluation of the horizontal axis rotor for a 200 kW class tidal current turbines were carried out with respect to the number of blades (two or three blades) and the pitch control algorithms (variable pitch or fixed pitch). As a result, the way of VSFP (Variable Speed Fixed Pitch) turbine with three blades showed the best performance. However, the performances of four alternative cases do not have significant differences. Considering the advantages in terms of maintenance, we also conducted with various conditions of rotor speed and cut-in speed. Hence, it is necessary for selecting the final design to consider the structural integrity related to the fatigue and also the economic feasibility related manufacturing the blades.plant. In this study, based on the design code, HARP_Opt (Horizontal Axis Rotor Performance Optimizer) developed by NREL (National Renewable Energy Laboratory) in the United States, applying BEMT (Blade Element Momentum Theory) and GA (Genetic Algorithm), the optimal design of blade shape and the performance evaluation of the horizontal axis rotor for a 200 kW class tidal current turbines were carried out with respect to the number of blades (two or three blades) and the pitch control algorithms (variable pitch or fixed pitch). As a result, the way of VSFP (Variable Speed Fixed Pitch) turbine with three blades showed the best performance. However, the performances of four alternative cases do not have significant differences. Considering the advantages in terms of maintenance, we also conducted with various conditions of rotor speed and cut-in speed. Hence, it is necessary for selecting the final design to consider the structural integrity related to the fatigue and also the economic feasibility related manufacturing the blades.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/24482
Bibliographic Citation
AWTEC, pp.150 - 151, 2016
Publisher
AWTEC
Type
Conference
Language
English
Publisher
AWTEC
Related Researcher
Research Interests

Ocean Energy-Tidal Current Energy Converter System,Infrastructure Management-Structural Health Monitoring,Offshore Wind,해양에너지-조류발전시스템,시설물 유지관리-구조건전성 평가,해상풍력

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