A Design Algorithm for Multivariable Linear Quadratic Integral Controllers in Voltage-Source Converters

This paper presents a voltage control design algorithm for a three-phase voltage source converter (VSC) connected to a linear load using a passive LCL filter. The controller is based on an optimal regulator, combined with the integral of the voltage error, which is called LQI that achieves null trac...

Full description

Saved in:
Bibliographic Details
Published inIECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society pp. 4025 - 4030
Main Authors Lopez-Chavarro, Andres F., Patarroyo-Montenegro, Juan F., Sanabria-Torres, Enrique A., Campo-Ossa, Daniel D., Vasquez-Plaza, Jesus D., Andrade-Rengifo, Fabio
Format Conference Proceeding
LanguageEnglish
Published IEEE 18.10.2020
Subjects
Delays
Inverters
Linear Quadratic Integral Controller
Mathematical model
Microgrid controllers
Microgrids
MIMO communication
Multivariable Control
Optimal Control
Robustness
Singular Values
Three-Voltage Source Converter
Voltage control
Online AccessGet full text
ISSN2577-1647
DOI10.1109/IECON43393.2020.9254603

Cover

More Information
Summary:This paper presents a voltage control design algorithm for a three-phase voltage source converter (VSC) connected to a linear load using a passive LCL filter. The controller is based on an optimal regulator, combined with the integral of the voltage error, which is called LQI that achieves null tracking of the error. The main objective of this paper is to present an algorithm to design a voltage controller through frequency analysis of the singular values of the system, the weight of the states involved in the system, the movement of the closed poles and their respective step response to evaluate performance and robustness against load changes. The simulation results show a satisfactory operation of the voltage controller with fast recovery after a resistive load change.
ISSN:2577-1647
DOI:10.1109/IECON43393.2020.9254603