A BRAKELESS SAVONIUS TURBINE

Mircea Viorel DRAGOI, Flavia FECHETE

Abstract


The research presents a constructive solution and the related mathematical model of a Savonius turbine that can self-stabilize its rotational speed without braking. Beyond a certain value of the wind speed, it is desired that the rotational speed of the turbine becomes constant. So far, this has been achieved using a brake. The present work proposes a constructive solution with mobile blades that, under the action of centrifugal force and of some springs, adjusts the area of the turbine’s blade, according to the wind speed, so that the rotational speed remains almost insensitive to the wind speed variations. The mathematical model needed to dimension the features of the main components is presented. Experimental tests validate the theoretical research.


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References


Shaughnessy, B., Probert, S., Partially-blocked Savonius rotor, Applied Energy, ISSN: 0306-2619, Elsevier, 1992

Kotb, M., and Aldoss, T., Flowfield around a partially-blocked Savonius rotor, Applied Energy, ISSN: 0306-2619, Elsevier, 1991

Tantichukiad, K., Yahya, A., Mohd Mustafah, A., Mohd Rafie, A. S., Mat Su, A. S., Design Evaluation Reviews on the Savonius, Darrieus, and Combined Savonius-Darrieus Turbines, Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, ISSN:0957-6509, Sage Journals, 2023

Chawla, S., Chauhan, A., Bala, S., Parametric Study of Hybrid Savonius-Darrieus Turbine, Proceedings of the 2nd International Conference on Recent Advances in Engineering & Computational Sciences (RAECS), Curran Associates (Ed.), pp.1-5, ISBN: 978-1-4673-8253-3, India, IEEE, Chandigarh, 2015

Ishkhanyan, M., Klimina, L., Wind turbine of the Savonius–Magnus type with conical blades: dynamics and control, Journal of Computer and Systems Sciences International, ISSN: 1064-2307, Springer, 2020

Chen, L., Chen, J., Zhang, Z., Review of the Savonius rotor’s blade profile and its performance, Journal of Renewable and Sustainable Energy, ISSN: 1941-7012, AIP Publishing, 2018.

Hassanzadeh, R., Mohammadnejad, M., Mostafavi, S., Comparison of various blade profiles in a two-blade conventional Savonius wind turbine, Journal of Energy Resources Technology, ISSN: 0195-0738, American Society of Mechanical Engineers, 2021

Chen, Y., Guo, P., Zhang, D., Chai, K., Zhao, C., Li, J., Power improvement of a cluster of three Savonius wind turbines using the variable-speed control method, Renewable Energy, ISSN: 0960-1481, Elsevier, 2022

Mohan, M., Saha, U. K., Overlap ratio as the design variable for maximizing the efficiency of a Savonius wind rotor: an optimization approach, ASME International Mechanical Engineering Congress and Exposition, ISBN: 0-7918-8564-X, American Society of Mechanical Engineers, 2021

Storti, B. A., Dorella, J. J., Roman, N. D., Peralta, I., Albanesi, A. E., Improving the efficiency of a Savonius wind turbine by designing a set of deflector plates with a metamodel-based optimization approach, Energy, ISSN: 0360-5442, Elsevier, 2019

Afify, R., Saber, E., Awad, H., Investigation of an innovative Savonius turbine in practice, Scientific reports, ISSN: 2045-2322, Nature Publishing Group UK London, 2025

Ogawa, T., Yoshida, H., Yokota, Y., Development of rotational speed control systems for a Savonius-type wind turbine, Journal of Fluids Engineering, ISSN: 0098-2202, The American Society of Mechanical Engineering, 1989

Drăgoi, M., Vrinceanu, D., Stamate, V., Cofaru, N., Vertical wind turbine with self-limitation system of speed, IOP Conference Series: Materials Science and Engineering, ISBN: 1757-899X, IOP Publishing, 2018

McGowan, J. G., Rogers, A. L., Wind energy explained: theory, design and application, John Wiley & Sons, ISBN: 1-282-81678-0, 2010.21


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