Title: Modified sliding mode control for a universal active filter-based solar microgrid system

Authors: Buddhadeva Sahoo; Sangram Keshari Routray; Pravat Kumar Rout

Addresses: Department of Electrical Engineering, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India ' Department of Electrical and Electronics Engineering, Siksha 'O' Anusandhan University (Deemed to be University), Bhubaneswar, Odisha, India ' Department of Electrical and Electronics Engineering, Siksha 'O' Anusandhan University (Deemed to be University), Bhubaneswar, Odisha, India

Abstract: This manuscript presents a larger signal model by combining the universal active filter (UAF) and the solar system with a vector switching operation (VSO) in a novel γθ frame. The detailed modelling of the S-UAF using VSO and modified sliding mode control (MSMC) is proposed for achieving better power quality (PQ) operation. MSMC-based novel γθ frame is used to estimate the accurate reference signals for SHAF during dynamic state conditions such as sag/swell, change in irradiance, fault and sensitive load condition. SEAF control is based upon the conventional dq control strategies and it adjusts the load voltage during dynamic conditions. SHAF is used to balance the grid side current and reduces the harmonic distortion by injecting the appropriate current in quadrature with the load current and facilitates fast transient response during sudden load change by providing better tracking capability and reduction in the switching losses. To validate the proposed controller and S-UAF approach with different test conditions, it is tested in MATLAB/Simulink environment and the related results are discussed.

Keywords: vector switching operation; VSO; modified sliding mode controller; MSMC; universal active filter; UAF; dynamic nonlinear transformation; DNT; power quality; PQ.

DOI: 10.1504/IJAAC.2022.122604

International Journal of Automation and Control, 2022 Vol.16 No.3/4, pp.321 - 349

Received: 02 Jul 2020
Accepted: 19 Sep 2020
Published online: 04 May 2022 *

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