This paper presents a lead compensator-based voltage control and resonance damping of a single-loop LC filter-based Voltage Source Converter (VSI). Passive damping approaches lead to additional losses in the system; hence active methods to damp the filter resonances are widely utilized. However, active methods increase the system cost due to the need for additional sensors. In this paper, the effect of undamped LC resonance on the system transfer functions is discussed and a lead compensator based control system is designed to improve the system stability, consequently damping the resonance in the output impedance transfer function. This extremely simple control is suitable even in case of relative low pulse numbers (ratio of switching-to-fundamental frequency) of around 40-50, thus making it a very effective low cost solution. Mathematical analysis and simulation results are provided.
