Title :
An improved and very efficient MPPT controller for PV systems subjected to rapidly varying atmospheric conditions and partial shading
Author :
Kazmi, S. ; Goto, Hiroki ; Ichinokura, Osamu ; Guo, Hai Jiao
Author_Institution :
Dept. of Electr. & Commun. Eng., Tohoku Univ., Sendai, Japan
Abstract :
Maximum power point tracking (MPPT) is a very important necessity in a system of energy conversion from a renewable energy source. Many research papers have been produced with various schemes over past decades for the MPPT in photovoltaic (PV) system. This research paper inspires its motivation from the fact that the keen study of these existing techniques reveals that there is still quite a need for an absolutely generic and yet very simple MPPT controller which should have all the following traits: total independence from system´s parameters, ability to reach the global maxima in minimal possible steps, the correct sense of tracking direction despite the abrupt atmospheric or parametrical changes, and finally having a very cost-effective and energy efficient hardware with the complexity no more than that of a minimal MPPT algorithm like Perturb and Observe (P&O). The MPPT controller presented in this paper is a successful attempt to fulfil all these requirements. It extends the MPPT techniques found in the recent research papers with some innovations in the control algorithm and a simplistic hardware. The simulation results confirm that the proposed MPPT controller is very fast, very efficient, very simple and low cost as compared to the contemporary ones.
Keywords :
controllers; maximum power point trackers; photovoltaic power systems; power system control; renewable energy sources; MPPT controller; PV systems; atmospheric conditions; energy conversion; energy efficient hardware; maximum power point tracking; minimal MPPT algorithm; partial shading; photovoltaic system; renewable energy source; tracking direction; Communication system control; Control systems; Costs; Energy conversion; Energy efficiency; Hardware; Photovoltaic systems; Power engineering and energy; Renewable energy resources; Solar power generation; MPPT; PV; multiple maxima; shading;
Conference_Titel :
Power Engineering Conference, 2009. AUPEC 2009. Australasian Universities
Conference_Location :
Adelaide, SA
Print_ISBN :
978-1-4244-5153-1
Electronic_ISBN :
978-0-86396-718-4