Performance enhancement of a cross-flow turbine using a synchronous generator with a multi-stage rectifier

Authors

  • Talgat Agimov Almaty University of Power Engineering and Telecommunications named after Gumarbek Daukeyev, 124 Baytursunov street, Almaty 050013, Kazakhstan
  • Kairat Bakenov Kazakh Scientific Research Institute of Energy named after Sh.Chokin, 114/85 Zhambyl street, Almaty 050012, Kazakhstan
  • Yertugan Umbetkulov Almaty University of Power Engineering and Telecommunications named after Gumarbek Daukeyev, 124 Baytursunov street, Almaty 050013, Kazakhstan
  • Abylaikhan Soltanayev Almaty University of Power Engineering and Telecommunications named after Gumarbek Daukeyev, 124 Baytursunov street, Almaty 050013, Kazakhstan
  • Sherkhan Rashidov Almaty University of Power Engineering and Telecommunications named after Gumarbek Daukeyev, 124 Baytursunov street, Almaty 050013, Kazakhstan
  • Gulnar Manapova Kazakh Scientific Research Institute of Energy named after Sh.Chokin, 114/85 Zhambyl street, Almaty 050012, Kazakhstan
Article ID: 517
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DOI:

https://doi.org/10.18686/cest517

Keywords:

synchronous generator; multi-stage rectifier; vertical-axis cross-flow turbine

Abstract

The high wind energy potential and the large number of remote settlements in Kazakhstan sustain interest in wind power installations. The vertical-axis cross-flow wind turbine is well adapted to local wind regimes, operating efficiently in the wind speed range of 3 to 30 m/s. However, conventional generator designs do not ensure optimal turbine loading across this range. This study explores the possibility of improving cross-flow wind turbine performance by replacing the conventional synchronous generator with a rectifier (SGR) with a synchronous generator featuring a multi-stage rectifier (SGMR), utilizing automotive alternators. The operating modes of the cross-flow wind turbine with SGMR were analyzed using a mathematical model developed in Excel. A physical modeling approach was proposed, where cross-flow wind turbines were simulated using DC motors, enabling investigation of generator behavior at wind speeds ranging from 3 to 26 m/s. Experimental tests on a physical setup demonstrated good agreement with the mathematical simulations. The influence of the number of rectifier stages, rated power, and rotational speed of the SGMR on cross-flow wind turbine performance was evaluated. Recommendations were developed for selecting optimal generator parameters for use with small-scale wind turbines. Model adequacy was confirmed by comparing the results of experimental studies of SGMR operating modes with the corresponding calculated data.

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Published

2025-12-16

How to Cite

Agimov, T., Bakenov, K., Umbetkulov, Y., Soltanayev, A., Rashidov, S., & Manapova, G. (2025). Performance enhancement of a cross-flow turbine using a synchronous generator with a multi-stage rectifier. Clean Energy Science and Technology, 3(4), 517. https://doi.org/10.18686/cest517

Issue

Vol. 3 No. 4 (2025)

Section

Article

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Copyright (c) 2025 Author(s)

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This work is licensed under a Creative Commons Attribution 4.0 International License.

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