Advanced Electric Machines and Cooperative Multi-Machine Systems for Next-Generation Wind Turbines

Dear Colleagues,

The rapid evolution of wind energy technology has motivated the development of multi-machine, modular, and cooperative architectures, where multiple electric machines interact to enhance performance, reliability, and scalability. Unlike traditional single-generator systems, these emerging configurations enable distributed energy conversion, redundant operation, and improved fault tolerance, paving the way for cost-effective and efficient large-scale and offshore wind installations.

This Special Issue will gather recent advances in electric machine design, modeling, control, and system integration for multi-machine and cooperative wind energy systems. We invite original research papers, comprehensive reviews, and case studies that explore both theoretical developments and practical implementations.

Contributions highlighting multi-physics modeling, advanced control strategies, experimental validation, and system-level optimization for multi-machine or modular configurations are especially encouraged. This Special Issue will serve as a platform for sharing the latest innovations bridging the fields of electric machine engineering, power electronics, and renewable energy systems.

The topics of interest include, but are not limited to, the following:

• Design and optimization of multi-machine and modular generators;
• Electromagnetic and mechanical coupling between interacting machines;
• Cooperative operation and distributed control of multi-generator systems;
• Hybrid and coupled topologies (multi-rotor, flux-modulated, or magnetically geared machines);
• Multi-machine energy sharing and interaction analysis;
• Power electronics and converter architectures for modular wind systems;
• Fault detection, condition monitoring, and reliability enhancement;
• System-level modeling and digital twin approaches for multi-machine systems;
• Experimental validation and prototype development for next-generation wind turbines;
• Integration and grid interaction of modular wind energy systems.

The transition to the implementation of next-generation offshore and large-scale wind turbines requires breakthroughs in machine architecture and system integration. Multi-machine and cooperative systems promise substantial gains in efficiency, scalability, and redundancy, yet they also introduce challenges in electromagnetic interaction, dynamic coordination, and fault management.

This Special Issue will provide a comprehensive forum for the research community to address these challenges, presenting interdisciplinary perspectives that combine machine design, control engineering, and power systems integration. The collected studies will contribute to shaping the future of modular and cooperative wind energy technologies.

Dr. Reza Yazdanpanah
Prof. Dr. Olimpo Anaya-Lara
Dr. David Campos-Gaona
Guest Editors

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