Operation of Static Compensator with Time-optimal Current Controller

This paper presents the operation of a static compensator (StatCom) which is controlled by a time-optimal current controller. The control algorithm enables a fast and optimized transient response at the constant switching frequency of the device. The performance is limited only by its output voltage rating. The main idea behind the time-optimal current control is to find such control voltage that enables us to reach current reference values in minimum time. The algorithm is derived from the StatCom mathematical model in alpha-beta coordinates and is tested by means of simulations using the StatCom mathematical model and a detailed model. The performance of the control algorithm is validated for reference current tracking and balanced and unbalanced network voltage sags. Copyright (C) 2008 Praise Worthy Prize S.r.l. - All rights reserved.