Development and mathematical modelling of a dual-rotor machine for wind turbine power generation system
Abstract Insufficient power grid support for wind turbines has become evident as wind energy use rises, particularly with bigger turbines. This paper introduces a modeling approach for a dual-rotor machine. Furthermore, it proposes a mechanism to integrate the gearbox and synchronous generator with...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-08-01
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| Series: | Scientific Reports |
| Subjects: | |
| Online Access: | https://doi.org/10.1038/s41598-025-16049-7 |
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| Summary: | Abstract Insufficient power grid support for wind turbines has become evident as wind energy use rises, particularly with bigger turbines. This paper introduces a modeling approach for a dual-rotor machine. Furthermore, it proposes a mechanism to integrate the gearbox and synchronous generator with the dual-rotor assembly to serve as a front-end speed control system. The synchronous generator at the end of the drive chain removes the need for a converter to connect electricity to the grid, making dual-rotor wind power production grid-compatible. Given the unique construction of the dual-rotor machine in this proposed system, the conventional mathematical model is no longer suitable for representing such machinery. To solve this problem, a mathematical model is created for the inner rotor of these machines utilizing a “rotating relative coordinate system” and a “relative stationary coordinate system” that stays stationary with the inner rotor while spinning for space. The mathematical model for the dual-rotor system is built on this basis. Final MATLAB simulations prove the unique mathematical model’s viability and the two-rotor wind turbine system’s power production efficiency. This study underscores the potential of this approach in advancing wind energy technology. |
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| ISSN: | 2045-2322 |