A New Maximum Power Point Tracking Scheme for Inverters

Author

Veerachary, Mummadi ; Kalpana, P. ; Kiranmai, K.S.

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., Delhi

fYear

2005

fDate

Sept. 2005

Firstpage

429

Lastpage

433

Abstract

The photovoltaic generator exhibits a non-linear i-v characteristic and its maximum power point varies with solar insolation. In this paper, a voltage based maximum power point tracking scheme is developed for the inverters. Mathematical models are formulated and then a tracking algorithm is evolved. Combined photovoltaic system simulation model is developed in the PSIM power electronic circuit simulator. For a given solar insolation, the tracking algorithm changes the duty ratio of the inverter such that the solar cell array voltage equals to the voltage corresponding to the maximum power point. Simulation models are developed for the integrated inverter system with maximum power point scheme. The tracking effectiveness is verified through simulation studies. Experimental investigations are carried out, using a micro-controller, and a few sample measurement results are presented here for comparison purpose

Keywords

invertors; mathematical analysis; photovoltaic power systems; solar cell arrays; PSIM power electronic circuit simulator; inverters; maximum power point tracking scheme; microcontroller; photovoltaic generator; photovoltaic system simulation model; solar cell array; solar insolation; Character generation; Circuit simulation; Inverters; Mathematical model; Photovoltaic systems; Power electronics; Power generation; Power system modeling; Solar power generation; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Conference, 2005. INTELEC '05. Twenty-Seventh International

Conference_Location

Berlin

Print_ISBN

978-3-8007-2905-0

Type

conf

DOI

10.1109/INTLEC.2005.335136

Filename

4134375