Universal Virtual Synchronous Generator Based on Extended Virtual Inertia to Enhance Power and Frequency Response

Virtual synchronous generators (VSG) are considered a new generation of grid-friendly inverters with the same inertial support characteristics as (SG). However, inertia comes side effects power and frequency response deterioration. The existing VSG oscillation suppression methods have limitations such complex controller parameter tuning, altering characteristics, quality degradation. To address these issues, this paper proposes universal control strategy based on extended virtual (VSG-EVI). Herein, is no longer constant or varying number; it endowed domain to improve transient responses. Moreover, detailed design process given in detail. Compared conventional (CVSG), VSG-EVI significantly suppress oscillations. methods, addresses issues reduction capability, whereas parametric simplified proposed intuitive inertia. Finally, method thoroughly validated by experiments under both grid-connected stand-alone modes.