Volume 18, Issue 3 (September 2022)                   IJEEE 2022, 18(3): 1-9 | Back to browse issues page

‎ 10.22068/IJEEE.18.3.2125
‎ 20.1001.1.17352827.2022.18.3.1.7

XML Print

Sliding Mode Controller Design for Stabilization of the Three-Phase Grid-Connected Inverters in the Presence of Unbalanced Local Loads
A. Zakipour , K. Aminzare , M. Salimi
Abstract:   (2139 Views)
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.
Keywords: Harmonic and Reactive Compensation , Robustness and Stability , Shunt Active Power Filter , Sliding Mode Control , Three-Phase Current Balancing , Wide Operational Range
Full-Text [PDF 1804 kb]   (1194 Downloads)    
  • A novel sliding mode controller is designed for mitigation of the unbalanced grid currents using the active power filters.
  • Considering existence of different controlling inputs/output in the averaged steady-state model of the system, a unique controller is proposed to improve the response of closed-loop system in a wide operational range.
  • The proposed current controller has zero steady-state error with a fast dynamic response.

Type of Study: Research Paper | Subject: Industrial Electronics
Received: 2021/03/08 | Revised: 2024/05/13 | Accepted: 2022/06/29
Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.