I. Introduction
In the conventional AC power systems, it is necessary to manage the reactive power in order to satisfactory operation of the system and to avoid extra voltage drops on the system impedances. To accomplish this, there is a need for installing compensation equipment in different points of the system. The Static Synchronous Compensator (commonly called STATCOM) is a parallel-connected converter initially aimed to compensate for reactive power in the power systems. It is usually fed from a capacitor and hence cannot exchange active power with the grid. The core of the STATCOM is a voltage-source converter (VSC) or a current-source converter (CSC); the latter is not as common as the first one mentioned.