Zakipour, Adel, Zare, Amin and Salimi, Mahdi ORCID: 0000-0003-3007-3027 (2022) Sliding mode controller design for stabilization of the three-phase grid-connected inverters in the presence of unbalanced local loads. Iranian Journal of Electrical and Electronic Engineering (IJEEE), 18 (3):2125. pp. 1-9. ISSN 1735-2827 (Online) (doi:https://doi.org/10.22068/IJEEE.18.3.2125)

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Abstract

Considering the presence of different model parameters and controlling variables, as well as the nonlinear nature of DC to AC inverters; stabilizing the closed-loop system for grid current balancing is a challenging task. To cope with these issues, a novel sliding mode controller is proposed for the current balancing of local loads using grid-connected inverters in this paper. The closed-loop system includes two different controlling loops: a current controller which regulates the output current of grid-connected inverter and a voltage controller which is responsible for DC link voltage regulation. The main features of the proposed nonlinear controller are reactive power compensation, harmonic filtering and three-phase balancing of local nonlinear loads. The developed controller is designed based on the state-space averaged modelling its stability and robustness are proved analytically using the Lyapunov stability theorem. The accuracy and effectiveness of proposed controlled approach are investigated through the PC-based simulations in MATLAB/Simulink.

Item Type:	Article
Uncontrolled Keywords:	harmonic and reactive compensation; robustness and stability; shunt active power filter; sliding mode control; three-phase current balancing; wide operational range
Subjects:	Q Science > Q Science (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science Faculty of Engineering & Science > School of Engineering (ENG)
Last Modified:	25 Sep 2023 14:15
URI:	http://gala.gre.ac.uk/id/eprint/43095

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