Title: Minimal overshoot V-F control for islanded microgrids

Authors: Ehab H.E. Bayoumi; Hisham M. Soliman; Mostafa Soliman

Addresses: Faculty of Science and Engineering, Electrical and Electronics Engineering Department, University of Eswatini, Kwaluseni, Eswatini ' Department of Electrical and Computer Engineering, Sultan Qaboos University, P.O. Box 33, Al-khod, Oman ' Faculty of Engineering, Electrical Engineering Department, Cairo University, Giza 12613, Egypt

Abstract: Islanded microgrids' dynamics are greatly affected by the controllers' gains and power-sharing parameters. This paper considers an islanded microgrid containing two distributed generation (DG) units. Each DG has its pulse width modulated (PWM) inverter for three phases. Each inverter has two control loops in cascade. The inner loop is a current loop and the outer loop is a voltage loop. The controller of each loop is designed to provide good dynamic performance in terms of minimal percentage overshoot and overall system stability. The particle swarm optimisation (PSO) is used to design the current and voltage controllers to achieve the desired performance. The proposed controllers are compared with the conventional technique (Ziegler and Nichols), which shows the excellence of the proposed technique. Different test scenarios as voltage and current tracking and load parameters variation are used to examine the proposed design.

Keywords: V-F control; microgrids; distributed generation; PSO; particle swarm optimisation; synchronisation; dynamic stability.

DOI: 10.1504/IJMIC.2020.113709

International Journal of Modelling, Identification and Control, 2020 Vol.35 No.2, pp.127 - 139

Received: 02 Jan 2020
Accepted: 28 Apr 2020
Published online: 19 Mar 2021 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article