Title: Semi-global finite-time stabilisation via output feedback of planar non-linear systems with application to MPPT in photovoltaic systems

Authors: Ruting Jia; Chunjiang Qian; Mo Jamshidi

Addresses: Department of Electrical and Computer Engineering, University of Texas at San Antonio, San Antonio, TX 78249, USA ' Department of Electrical and Computer Engineering, University of Texas at San Antonio, San Antonio, TX 78249, USA ' Department of Electrical and Computer Engineering, University of Texas at San Antonio, San Antonio, TX 78249, USA

Abstract: This paper investigates the problem of using output feedback to semi-globally stabilise a class of planar non-linear systems with unknown control coefficients. For any given bounded set of initial condition, a non-smooth output feedback controller using a reduced-order observer is explicitly constructed to stabilise the planar system in a finite time. We also show that the proposed non-smooth output feedback controller can be used to solve the problem of Maximum Power Point Tracking (MPPT) in photovoltaic (PV) arrays for certain solar radiation and temperature.

Keywords: semi-global; finite time stabilisation; MPPT; maximum power point tracking; planar systems; nonlinear systems; photovoltaic arrays; feedback control; solar radiation; temperature; solar energy; solar power.

DOI: 10.1504/IJAAC.2012.048646

International Journal of Automation and Control, 2012 Vol.6 No.2, pp.140 - 156

Received: 10 Dec 2011
Accepted: 22 Dec 2011
Published online: 07 Nov 2014 *

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