  The Virtual Synchronous Machine (VSM) concept stands as a strategy for the
seamless integration of renewable energy sources into the grid. In scenarios
where symmetrical and sinusoidal operating conditions are lacking, VSMs
demonstrate multifaceted capabilities. They can operate as power sources
especially in islanded-systems, adeptly address harmonic distortions and
imbalances, offer load power compensation, and elevate voltage quality at the
grid. Even so, dead time variations, discontinuous input current, and
non-single-power-stage configuration of conventional voltage/current source
inverters and also, load variation can result in VSMs behaving as harmonic and
imbalance absorbers. This paper utilizes a specific Y-Source Inverter (YZSI)
for the first time as a solution to these challenges. Through integrating this
innovative configuration with an exceptionally adaptable voltage gain and an
enhanced multi-loop control strategy into an isolated power system
accommodating diverse load profiles, it not only achieves high efficiency in
power transfer but also enhances overall system performance quality.
Furthermore, it contributes to extending the lifespan and preserving the
quality of the input source. The controller is designed to regulate system
frequency, voltage, and manage voltage and current for YZSI, delivering
impressive performance even in non-ideal grid conditions. MATLAB/Simulink
confirms the efficacy of the proposed YZSI VSG control strategy with a high
accuracy achieved through a comprehensive examination of the internal component
parameters.
