Design of 3-Level Inverter Using FIXCOM

In the utility grid, the occurrence of a voltage drop on the transmission and distribution lines is due to the flow of reactive energy. It is advisable to regulate the voltage within a narrow range of its nominal value (±5% range around its nominal values). Consequently, reactive power control is necessary to control dynamic voltage fluctuations under different system conditions and thus improve the performance and transmission of the distribution system. In this paper, a fixed three-phase voltage (VSI) source compensator is searched for. The paper aims to explain how STATCOM is used to improve the AC system power factor and voltage regulation, and thus improve the performance of transmission and distribution lines. A STATCOM fast fixed compensator is required to produce or absorb reactive energy in order to provide the necessary reactive energy balance in the transmission and distribution system. Modern reactive power compensation uses a voltage inverter (VSI). This STATCOM application has achieved a unit power factor transmission system, which reduces active energy loss by 38.7% thus reducing energy costs, as well as increasing the capacity of the transmission system.