In the modern era of power systems, we need to have very accurate models for synchronous generators that can reflect the true behavior of the system under dynamics imposed by many new sources and loads attached to the system. From the perspective of extracting parameters of a synchronous generator, the standstill frequency response test becomes one of the best solutions in terms of machine friendliness over the other conventional tests like the sudden three-phase short circuit test. With the help of a single-phase Voltage Source Inverter (VSI) that can deliver variable rms and variable frequency sinusoidal outputs, this frequency response test can be conducted on any synchronous generator of any capacity without imposing severe stresses on the machine. This paper details the design and simulation of a single-phase Voltage Source Inverter (VSI) tailored to meet these requirements and the simulations were carried out using MATLAB Simulink, ensuring a robust and accurate representation of the inverter’s performance.