Stephen Arinze Obi — Papers on Cortexa

arxiveess.SY2026-07-10

Structural Decoupling and Current-Angle Steering for Post-Fault Recovery of Current-Limited Grid-Forming Inverters

Neethu Sajeev, Stephen Arinze Obi, Jae-Jung Jung

Reliable fault recovery of grid-forming (GFM) converters under current-limited conditions is increasingly important as inverter-based resources replace synchronous generation. Existing current-limiting strategies primarily focus on current-angle regulation and synchronization tra…

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arxiveess.SY2026-07-07

Structural Analysis and Internal Stability Enhancement of Virtual-Admittance-Based Cascaded GFMIs Under Unity Voltage-Feedback Decoupling

Stephen Arinze Obi, Ki-Hyun Kim, Jae-Jung Jung

Virtual admittance (VA) is widely used in cascaded voltage-control and current-control (VC-CC) grid-forming inverters (GFMIs) because it shapes the converter terminal behavior while preserving the current-regulation path required for current shaping and limiting. However, the ach…

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