Simulink Model of Virtual Synchronous Generator with Integrated Control Modules

The Simulink model of a virtual synchronous generator comprises several critical interconnected modules designed to ensure robust system operation. The active frequency regulation module employs droop control algorithms to maintain grid frequency stability by adjusting active power output proportionally to frequency deviations. This is typically implemented using proportional controllers with predefined droop coefficients that simulate traditional generator inertia characteristics. The reactive voltage regulation module utilizes voltage droop control mechanisms to maintain stable voltage levels throughout the system. This module often incorporates PI controllers that process voltage error signals to generate appropriate reactive power compensation commands, ensuring voltage quality during dynamic load conditions. The sinusoidal pulse width modulation (SPWM) module implements carrier-based modulation techniques to generate precise switching signals for power converters. This module typically features triangle carrier wave comparison with sinusoidal reference signals, employing MATLAB functions like compare blocks and PWM generators to produce high-quality output waveforms with minimal harmonic distortion. All modules are integrated through carefully designed interfaces and signal processing blocks, ensuring seamless data exchange and coordinated control actions. The model employs Simulink's power system libraries for power electronics components and control system toolboxes for implementing advanced regulation algorithms, resulting in an efficient virtual synchronous generator that accurately emulates conventional synchronous machine behavior while providing enhanced power quality.