Fault Ride-Through Capability Enhancement of Grid-Integrated PMSG Wind Energy Conversion Systems

Netraraj Kumar; Burla Sridhar

doi:10.36948/ijfmr.2025.v07i05.55132

Fault Ride-Through Capability Enhancement of Grid-Integrated PMSG Wind Energy Conversion Systems

Author(s)	Netraraj Kumar, Prof. Burla Sridhar
Country	India
Abstract	The integration of wind energy into modern power grids has introduced new challenges in maintaining system stability during grid disturbances. Permanent Magnet Synchronous Generator (PMSG) based Wind Energy Conversion Systems (WECS) have gained prominence due to their high efficiency, gearless operation, and suitability for variable-speed applications. However, their sensitivity to grid faults, particularly low-voltage conditions, can lead to severe issues such as DC-link overvoltage, converter overcurrent, and potential disconnection from the grid. To ensure uninterrupted operation and compliance with grid codes, effective Fault Ride-Through (FRT) strategies are essential. This paper presents a comprehensive design and simulation analysis of the FRT capability of a grid-connected PMSG-based WECS. The proposed approach employs a coordinated control strategy in which the Grid-Side Converter (GSC) is modified to provide dynamic reactive power support during voltage sags, while simultaneously regulating the DC-link voltage. A Phase-Locked Loop (PLL) is utilized to maintain synchronization under fault conditions, ensuring robust performance during transients. Simulation scenarios, including balanced three-phase faults and voltage swell events, are carried out in MATLAB/Simulink to evaluate the system response. The results demonstrate that the proposed control strategy effectively suppresses DC-link fluctuations, restores stable operation post-fault, and ensures grid code compliance by maintaining the Total Harmonic Distortion (THD) of grid currents within IEEE-519 limits. Furthermore, the system exhibits rapid recovery with improved active and reactive power support during and after the fault period. The findings confirm that advanced converter-based control significantly enhances the fault ride-through capability of PMSG-based wind energy systems, thereby improving overall grid reliability and resilience.
Keywords	Fault Ride-Through (FRT), Grid Code Compliance, Grid-Side Converter (GSC), Low-Voltage Ride-Through (LVRT), Permanent Magnet Synchronous Generator (PMSG), Power Quality, Wind Energy Conversion System (WECS).
Field	Engineering
Published In	Volume 7, Issue 5, September-October 2025
Published On	2025-09-05
DOI	https://doi.org/10.36948/ijfmr.2025.v07i05.55132

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Fault Ride-Through Capability Enhancement of Grid-Integrated PMSG Wind Energy Conversion Systems

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