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

Hyeonmu Jang, Insu Paek, Seungjoo Kim and Deockjin Jeong
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Hyeonmu Jang: Department of Advanced Mechanical Engineering, Kangwon National University, Chuncheon-si 24341, Korea
Insu Paek: Department of Advanced Mechanical Engineering, Kangwon National University, Chuncheon-si 24341, Korea
Seungjoo Kim: Korea Testing Certification, 22, Heungan-dearo 27, Gunpo-si 15809, Korea
Deockjin Jeong: JH Energy, 112, Toegyenonggong-ro, Chuncheon-si 24427, Korea

Energies, 2019, vol. 12, issue 9, 1-12

Abstract: 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%.

Keywords: small wind turbine; twisted Savonius wind turbine; computational fluid dynamics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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