Dynamic behaviour of DC motor-based photovoltaic pumping systems under searching MPPT algorithms

Author

Elgendy, M.A. ; Zahawi, B. ; Atkinson, D.J. ; Giaouris, D.

Author_Institution

Sch. of Electr., Electron., & Comput. Eng., Newcastle Univ., Newcastle upon Tyne

fYear

2009

fDate

18-20 March 2009

Firstpage

413

Lastpage

418

Abstract

The behaviour of searching maximum power point tracking (MPPT) algorithms utilizing direct duty ratio perturbation control is shown to exhibit nonlinear phenomena, including slow scale bifurcations and chaos like behaviour, when applied to a dc photovoltaic (PV) system. The performance characteristics of a dc photovoltaic water pumping system, in which the searching MPPT algorithm is applied at the frequency of the PWM signal of the converter, are examined. The nonlinear behaviour of the system is analyzed and the effects of different parameters on system performance are discussed.

Keywords

DC motors; perturbation theory; photovoltaic power systems; pumps; DC motor-based photovoltaic pumping systems; dc photovoltaic system; dynamic behaviour; maximum power point tracking algorithms; nonlinear behaviour; nonlinear phenomena; perturbation control; searching MPPT algorithms; slow scale bifurcations; Bifurcation; Chaos; Control systems; Frequency conversion; Nonlinear control systems; Nonlinear dynamical systems; Photovoltaic systems; Solar power generation; Underwater tracking; Water; Buck Converter; Chaos; MPPT; PV Pumping;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering, Energy and Electrical Drives, 2009. POWERENG '09. International Conference on

Conference_Location

Lisbon

Print_ISBN

978-1-4244-4611-7

Electronic_ISBN

978-1-4244-2291-3

Type

conf

DOI

10.1109/POWERENG.2009.4915260

Filename

4915260