Compensation of unsymmetrical load in four-wire networks using an active rectifier with an energy source

The load of residential and public buildings is a significant part of electricity consumption in the overall annual structure of electricity consumption of Russia. Due to the different power and irregular mode of their operation, the daily electricity consumption graph becomes to be significantly irregular, and the phase distribution is asymmetrical. Existing problem solving methods usually solve only one problem, and they must be used together. As a device for balancing consumption from the supply system, this work considers an active voltage rectifier with an energy source in the DC link. The aim of this work is to develop a simulation model of a three-phase active voltage rectifier to compensate for unbalanced consumption by an unbalanced load in a four-wire network in the SimInTech simulation environment. A mathematical description of the active rectifier control system and a method for obtaining a control law are given. An example with an unbalanced three-phase load is considered. Simulation modeling was carried out. As a result of operation of the active rectifier it compensates for the phase unbalance of the active and reactive power of the load and perform power factor correction to achieve the standard power factor.