H∞ loop-shaping controller design for a grid-connected single-phase photovoltaic system

Chowdhury, M.A. and Kashem, Saad Bin A. (2018) H∞ loop-shaping controller design for a grid-connected single-phase photovoltaic system. International Journal of Sustainable Engineering, 11 (3). pp. 196-204.

Abstract

This paper presents a H∞ loop-shaping controller for controlling dc-link voltage by regulating the switching signal of the inverter associated with a grid-connected single-phase photovoltaic system. To facilitate a robust control design, state-space realisation of the system model is made with uncertainties represented by linear fractional transformation. The controller is achieved through H∞ synthesis followed by obtaining desired loop shapes through the choice of the proper weighting functions. The controller order is reduced by Henkel-norm method for facilitating its practical implementation. Controller performance is evaluated through carrying out simulations on MATLAB/Simulink platform under standard and changing atmospheric conditions, and fault condition.

Item Type:	Journal Article
Murdoch Affiliation:	School of Engineering and Information Technology
Publisher:	Taylor & Francis
URI:	http://researchrepository.murdoch.edu.au/id/eprint/40533

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