Backstepping fractional sliding mode voltage control of an islanded microgrid. Issue 12 (16th May 2019)

• Record Type: Journal Article
• Authors: Delavari, Hadi; Naderian, Sina
• Is Part Of: IET generation, transmission & distribution. Volume 13:Issue 12(2019)
• Page Start: 2464
• Page End: 2473
• Publication Date: 2019-05-16
• Subjects: power generation control -- distributed power generation -- harmonic distortion -- nonlinear control systems -- uncertain systems -- closed loop systems -- particle swarm optimisation -- variable structure systems -- robust control -- voltage control -- control nonlinearities; backstepping fractional sliding mode voltage control -- islanded MG -- MG voltages -- FO backstepping SMC -- closed‐loop control system -- particle swarm optimisation algorithm -- islanded microgrid -- robust nonlinear voltage‐control strategy -- distribution networks; Electric power production -- Periodicals; Electric power transmission -- Periodicals; Electric power distribution -- Periodicals; 621.3105
• DOI: 10.1049/iet-gtd.2018.5909
• Languages: English
• ISSNs: 1751-8687

Abstract

Abstract : Distribution networks include thousands of sensors and a large number of controllable devices such as flexible loads, batteries and distributed generators with an arbitrary configuration that can be parametrically uncertain or topologically unknown. In this study, a new robust non‐linear voltage‐control strategy based on backstepping and fractional‐order (FO) sliding mode control (SMC) is presented for an islanded microgrid (MG). Then for the problem of determining the controller parameters, particle swarm optimisation algorithm is used. The primary objective in this study is to improve robust performance and disturbance rejection of the closed‐loop control system. A FO backstepping SMC is proposed in this study. The proposed controller robustly regulates the MG voltages in the presence of parametric uncertainties, unmodelled dynamics, imbalanced and non‐linear loads with harmonic. Finally, the performance of the proposed technique is investigated under disturbance in an islanded MG. An in‐depth comparative study is done to highlight the merits of the proposed controller. Simulation results revealed that the total harmonic distortion and the steady‐state error of the output voltage are successfully decreased and the dynamic performance and the capability of perturbation rejection are efficiently improved.‏