Control Technology and Stability Analysis of Renewable Energy Grid-Connected Power Generation

Dear Colleagues,

The rapid global transition towards sustainable energy systems has driven the large-scale integration of renewable energy sources—such as solar photovoltaic, wind power, and energy storage—into modern power grids. As the proportion of inverter-based resources continues to rise, the dynamics and operational characteristics of power systems are undergoing fundamental changes. Unlike traditional synchronous generators, grid-connected power electronic converters introduce unique challenges in terms of control, stability, and grid-support capabilities. This Special Issue focuses on the critical technologies and analytical methods needed to ensure the reliable, stable, and efficient integration of new energy generation into electrical grids.

The core of this transformation lies in advanced control technologies for grid-connected converters. These technologies must not only achieve efficient energy conversion but also provide essential grid-support functions, such as voltage and frequency regulation, inertia emulation, and fault ride-through capability. With the increasing complexity of grid conditions and the diversity of energy sources, control strategies must evolve towards greater adaptability, robustness, and intelligence. Simultaneously, the stability of power systems dominated by power electronics has become a prominent research concern. The interaction between numerous converters and the grid can lead to new forms of instability—including small-signal resonance, sub-synchronous oscillation, and weak-grid instability—which cannot be adequately analyzed using conventional stability theories. Developing new modeling, analysis, and mitigation approaches is therefore essential to safeguard the security of future power networks.

This Special Issue aims to gather high-quality research and innovative insights into the control and stability of new energy grid-connected systems. We welcome original contributions, review articles, and case studies addressing theoretical advances, technological developments, and practical applications. Topics of interest include, but are not limited to, the following:

• Advanced grid-following and grid-forming control strategies;
• Stability analysis and enhancement of high-renewable-penetration power systems;
• Modeling and analysis of converter-driven stability issues;
• AI- and data-driven control methods for grid-connected converters;
• Coordinated control of hybrid renewable–storage systems;
• Fault ride-through and grid-support under asymmetrical grid conditions;
• Stability in weak grids and microgrid applications;
• Hardware-in-the-loop testing and real-world validation of control strategies;
• Standards, grid codes, and performance evaluation for new energy integration.

We look forward to your submissions and to fostering a meaningful exchange of ideas that will help shape the next generation of grid-integrated renewable energy systems.

Dr. Xingxing Chen
Dr. Chengkai Liu
Dr. Buqing Deng
Guest Editors

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• grid-connected converters
• renewable energy integration
• stability analysis
• grid-forming control
• oscillation suppression
• fault ride-through capability