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Chen, X., Xue, T., Kocar, I., Bu, S., & Berger, M. (2025). Sustained oscillations of grid-forming IBRs under unbalanced perturbation: Modal analysis and EMT studies. Electric Power Systems Research, 252, 112206 (8 pages). Presented at International Conference on Power Systems Transients (IPST 2025), Guadalajara, Mexico. External link
Chen, X., Haddadi, A., Farantatos, E., Kocar, I., & Bu, S. (2025). Power swing in systems with varying penetration of grid-forming IBRs: protection and dynamics. Protection and Control of Modern Power Systems, 10(4), 116-129. Available
Chen, X., Haddadi, A., Yang, Z., Farantatos, E., & Kocar, I. (2025). Efficient, Robust and Comprehensive Fault Calculation of IBR-rich Systems Considering Diverse Controls. IEEE Open Access Journal of Power and Energy, 12, 378-390. Available
Chen, X., Kocar, I., Bu, S., Farantatos, E., & Haddadi, A. (2025). Comparative Analysis of Negative Sequence Behavior in Grid-Following and Grid-Forming Inverters: Modeling, Control, and Protection. IEEE Transactions on Power Delivery, 40(3), 1730-1742. External link
Chen, X., Bu, S., Haddadi, A., & Kocar, I. (2025). Performance of distance protection under inverter-based resources with IEEE 2800 current injection requirements. IET Conference Proceedings, 2025(1), 577-582. Presented at 18th International Conference on Developments in Power System Protection (DPSP APAC 2025), Hong Kong, China. External link
Chen, X., Bu, S., & Kocar, I. (2025). Grid-Forming IBRs under Unbalanced Grid Conditions: Challenges, Solutions, and Prospects. IEEE Transactions on Sustainable Energy, 16 pages. External link
Chen, X., Chang, Y., & Kocar, I. (2024). Grid-Forming Control of DFIG-based Wind Turbine Generator by Using Internal Voltage Vectors for Asymmetrical Fault Ride-Through. IEEE Transactions on Energy Conversion, 3470588 (13 pages). External link
Haddadi, A., Chen, X., Farantatos, E., & Kocar, I. (2025). A Robust Solver for Phasor-Domain Short-Circuit Analysis with Inverter-Based Resources. IEEE Transactions on Power Delivery, 1-13. External link
Xue, T., Zhao, M., Javid, Z., Chen, X., & Kocar, I. (2024, June). A Complete Internal Voltage-Based RMS Model of Grid-Connected VSC for Weak Grid Instability Studies [Paper]. 8th International Conference on Power Energy Systems and Applications (ICoPESA), Hong Kong, Hong Kong. External link
