PR controllers for series converter in active voltage conditioner

Abstract

Temporary voltage swells and sags appear with high frequency in electric power systems, and they significantly
affect sensitive loads such as industrial manufacturing or communication devices. The paper presents a control
strategy with proportional-resonant controllers for three full-bridge Voltage Source Converters with a common
DC-link to create a dynamic voltage restorer. The control strategy permits the system to overcome the temporary
voltage swells and sags in certain circumstances: single-phase or double-phase voltage sags up to 55%, threephase voltage sags up to 70%, and voltage swells up to 110% in a duration less than one grid-voltage cycle. The
simulation results are carried out in MATLAB/Simulink and experimental results are deployed in Typhoon HIL
402 device to demonstrate the ability of the proposed control method.