<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The paper presents a linear-quadratic current controller with damped oscillatory terms designed for three-phase grid-tie voltage source converters used in SMES systems and operated under distorted grid voltage conditions. Special emphasis is placed on a synthesis of an anti-windup mechanism to prevent wind-up derived from the oscillatory terms by the use of a new active damping loop based on a simple moving average method. As a consequence, the current feedback gain may be increased without unwanted overshoot and overruns, and performance of the system can be improved.</p></abstract>

The paper presents a linear-quadratic current controller with damped oscillatory terms designed for three-phase grid-tie voltage source converters used in SMES systems and operated under distorted grid voltage conditions. Special emphasis is placed on a synthesis of an anti-windup mechanism to prevent wind-up derived from the oscillatory terms by the use of a new active damping loop based on a simple moving average method. As a consequence, the current feedback gain may be increased without unwanted overshoot and overruns, and performance of the system can be improved.

ANTI-WINDUP STRATEGY FOR AN LQ CURRENT CONTROLLER WITH OSCILLATORY TERMS FOR THREE-PHASE GRID-TIE VSCs IN SMES SYSTEMS

Power Electronics and Drives

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The paper presents a linear-quadratic current controller with damped oscillatory terms designed for three-phase grid-tie voltage source converters used in SMES...

ANTI-WINDUP STRATEGY FOR AN LQ CURRENT CONTROLLER WITH OSCILLATORY TERMS FOR THREE-PHASE GRID-TIE VSCs IN SMES SYSTEMS

Published Online: Oct 27, 2017

Page range: 65 - 81

Received: Oct 25, 2016

Accepted: Dec 14, 2016

DOI: https://doi.org/10.5277/ped160204

Keywords
grid-connected converter, linear-quadratic control, resonant control, current control, anti-windup

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

ANTI-WINDUP STRATEGY FOR AN LQ CURRENT CONTROLLER WITH OSCILLATORY TERMS FOR THREE-PHASE GRID-TIE VSCs IN SMES SYSTEMS

Published Online: Oct 27, 2017

Page range: 65 - 81

Received: Oct 25, 2016

Accepted: Dec 14, 2016

DOI: https://doi.org/10.5277/ped160204

Keywordsgrid-connected converter, linear-quadratic control, resonant control, current control, anti-windup

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
grid-connected converter, linear-quadratic control, resonant control, current control, anti-windup