Title :
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
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;
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
DOI :
10.1109/POWERENG.2009.4915260
