Wind Energy Science
Wind Energy Science
WES
Articles | Volume 11, issue 5
Articles | Volume 11, issue 5
https://doi.org/10.5194/wes-11-1733-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-11-1733-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 11, issue 5
Research article
 | 
13 May 2026
Research article |  | 13 May 2026

Design and simulation of a continuously variable hydraulic power-split drivetrain for wind turbines

Pascal Seifermann, Jonathan Schaaf, Sven Störtenbecker, Alexander Dam, and Peter Dalhoff

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Short summary
This paper investigates a novel drivetrain concept for wind turbines. The proposed approach allows for the elimination of the frequency converter that is typically required to enable variable-rotor speed. Instead, variable-speed operation is realized through a combination of hydraulic and mechanical transmission. The concept can achieve efficiency levels comparable to conventional drivetrains while avoiding the high susceptibility to faults and costs associated with frequency converters.
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