Performance Prediction and Validation of a Small-Capacity Twisted Savonius Wind Turbine

Energies

Hyeonmu Jang¹  Insu Paek¹  Deockjin Jeong²  Seungjoo Kim³ 

[1] Department of Advanced Mechanical Engineering, Kangwon National University, Chuncheon-si 24341, Korea;JH Energy, 112, Toegyenonggong-ro, Chuncheon-si 24427, Korea;Korea Testing Certification, 22, Heungan-dearo 27, Gunpo-si 15809, Korea;

关键词: small wind turbine;    twisted Savonius wind turbine;    computational fluid dynamics;   

DOI  :  10.3390/en12091721

来源: DOAJ

【 摘 要 】

In this study, an off-grid−type small wind turbine for street lighting was designed and analyzed. Its performance was predicted using a computational fluid dynamics model. The proposed wind turbine has two blades with a radius of 0.29 m and a height of 1.30 m. Ansys Fluent, a commercial computational fluid dynamics solver, was used to predict the performance, and the k-omega SST model was used as the turbulence model. The simulation result revealed a tip-speed ratio of 0.54 with a maximum power coefficient, or an aerodynamic rotor efficiency of 0.17. A wind turbine was installed at a measurement site to validate the simulation, and a performance test was used to measure the power production. To compare the simulation results obtained from the CFD simulation with the measured electrical power performance, the efficiencies of the generator and the controller were measured using a motor-generator testbed. Also, the control strategy of the controller was found from the field test and applied to the simulation results. Comparing the results of the numerical simulation with the experiment, the maximum power-production error at the same wind speed was found to be 4.32%.

【 授权许可】

Unknown