By Topic

Mitigation of Dynamic, Unbalanced, and Harmonic Voltage Disturbances Using Grid-Connected Inverters With LCL Filter

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Yasser Abdel-Rady I. Mohamed ; Dept. of Electr. & Comput. Eng., Univ. of Alberta, Edmonton, AB, Canada

This paper presents a robust and fast control strategy for load-voltage regulation in grid-connected inverters with inductor-capacitor-inductor (LCL) filter. The LCL filter complicates the power circuit dynamics, particularly when the uncertain nature of the grid background distortion and system parameters is considered. Furthermore, grid-voltage control in the presence of LCL filter dynamics yields dynamic coupling between current and voltage control loops. To overcome these difficulties, first, a robust high-bandwidth multiloop current controller is designed to decouple the current and voltage control dynamics and mitigate uncertain interactions between the LCL-filtered current-controlled inverter and grid. Second, a dual-sequence adaptive-gain variable-structure voltage control scheme is proposed for effective mitigation of fast, dynamic, unbalanced, and harmonic voltage disturbances. A theoretical analysis and comparative experimental results are presented to demonstrate the effectiveness of the proposed control scheme in supporting the voltage reliability.

Published in:

IEEE Transactions on Industrial Electronics  (Volume:58 ,  Issue: 9 )