Authors: Abdul Balikci; Hossein Hafezi; Eyup Akpınar
Addresses: Department of Electrical and Electronics Engineering, Dokuz Eylul University, 35160, İzmir, Turkey ' Faculty of Information Technology and Communication Sciences, Tampere University, 33100 Tampere, Finland ' Department of Electrical and Electronics Engineering, Dokuz Eylul University, 35160, İzmir, Turkey
Abstract: Reactive power and harmonic current compensation are considered as two important issues in the electrical power system since they have strong impact on real power loss, voltage stability, resonance and operation cost. This paper presents a simple, yet effective cascade controller which is analysed and implemented on a single-phase grid-connected H-bridge and multilevel U-cell inverters. The proposed controller is used for the single-phase STATCOM and shunt active power filter. The DC bus capacitor voltages are regulated with the proportional-integral (PI) controllers. The proportional resonant (PR) controller is used for AC current control. The cascade operation of the PI and the PR controllers generates the control signal for the sinusoidal pulse width modulation. The reactive power compensation and harmonic current elimination are carried out by using the fundamental component of the grid current. The performance of the controller is analysed and the results of simulation and experimental work are presented.
Keywords: power quality; single-phase STATCOM; shunt active power filter; SAPF; current controller.
International Journal of Renewable Energy Technology, 2022 Vol.13 No.1, pp.28 - 47
Received: 19 Feb 2021
Accepted: 03 May 2021
Published online: 14 Jan 2022 *