Prospects of Wind Turbines With Diffuser Augmented Configurations: Bibliographic and Patent Analysis

Aydar Kurmanov; Bulat Salykov; Ayap Kurmanov; Uralbay Khassenov

doi:10.37385/sjht2f79

Authors

Aydar Kurmanov A. Baitursynuly Kostanay Regional University https://orcid.org/0009-0000-7011-8870 (unauthenticated)
Bulat Salykov A. Baitursynuly Kostanay Regional University https://orcid.org/0000-0003-2834-1010 (unauthenticated)
Ayap Kurmanov A. Baitursynuly Kostanay Regional University https://orcid.org/0000-0002-2047-3281 (unauthenticated)
Uralbay Khassenov A. Baitursynuly Kostanay Regional University https://orcid.org/0000-0002-4292-6966 (unauthenticated)

DOI:

https://doi.org/10.37385/sjht2f79

Keywords:

Diffuser-Augmented Wind Turbine, Bibliometric Analysis, Patent Landscape, Wind Energy, Technology Readiness Level

Abstract

Diffuser-augmented wind turbines (DAWTs) are a promising wind-energy concept designed to enhance airflow through the rotor and improve energy capture, especially in low-wind and urban environments. This study evaluates the development prospects of DAWTs through an integrated bibliometric and patent analysis. Bibliographic records were retrieved from Scopus, and patent records were obtained from Google Patents for the period 2013–2023. After screening and eligibility assessment, 334 scientific publications and 401 patent families were included in the final analysis. The results show a sustained increase in research output, with China, the United States, and Japan emerging as leading contributors. Keyword co-occurrence analysis identified four dominant research clusters: aerodynamics and optimization, design and materials, urban and distributed systems, and noise and control. Patent activity peaked around 2020 and was concentrated in China, the United States, and Europe, indicating growing commercial interest. Although DAWTs can achieve rotor-area-normalized performance values above the classical Betz limit, such results should be interpreted within the specific fluid-dynamic framework of ducted systems. Overall, DAWTs demonstrate strong technical potential, but large-scale deployment remains constrained by structural complexity, cost, and limited field validation. Future progress depends on scalable design, field testing, and techno-economic assessment.

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Author Biographies

Aydar Kurmanov, A. Baitursynuly Kostanay Regional University

Aidar Kurmanov is a doctoral candidate at A. Baitursynov Kostanay Regional University. He holds a master's degree in engineering and technology. His research focuses on technical disciplines, and his current research is part of his doctoral studies. His email and phone number are provided for professional communication.
Bulat Salykov, A. Baitursynuly Kostanay Regional University

Bulat Salykov is the head of the department and an associate professor at A. Baitursynov Kostanay Regional University. He holds a PhD in engineering. He holds a leadership position in the department, demonstrating his significant experience and academic recognition.
Ayap Kurmanov, A. Baitursynuly Kostanay Regional University

Ayap Kurmanov is a Doctor of Engineering, Professor, and Head of the Mechanical Engineering Department at A. Baitursynov Kostanay Regional University. As the head of his department, he has significant experience in technical sciences and higher education. His academic title of professor and his highest academic degree confirm his authority in the academic community and his active research activities in mechanical engineering. He is part of the research and teaching staff of one of the leading universities in the Kostanay region.
Uralbay Khassenov, A. Baitursynuly Kostanay Regional University

Uralbay Khasenov is a PhD candidate in engineering and a senior lecturer at A. Baitursynov Kostanay Regional University. His professional career involves teaching technical disciplines and conducting research in this field. His academic degree and position demonstrate his expertise and experience in higher technical education. Khasenov makes a significant contribution to the training of specialists while working at one of the leading universities in the Kostanay region.

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