Design of a single-switch DC-DC converter for PV-battery powered pump system

Author

Le An ; Lu, Dylan Dah-Chuan

Author_Institution

Sch. of Electr. & Inf. Eng., Univ. of Sydney, Sydney, NSW, Australia

fYear

2013

fDate

3-6 Nov. 2013

Firstpage

359

Lastpage

364

Abstract

A single-switch non-isolated DC-DC converter for a PV-battery powered pump system is proposed in this paper. The converter is formed by combining a buck converter with a buck-boost converter. This integration also resulted in reduced repeated power processing, hence improving the conversion efficiency. The converter is able to perform maximum power point tracking, and battery charging and to drive the pump, on the condition that the pump can be operated without precise speed requirements. The battery in the converter provides a more steady DC-link voltage as compared to that of a conventional single-stage converter. Experimental results of a 14W laboratory prototype converter confirmed the performance of the proposed converter when used in a PV-battery-pump system.

Keywords

DC-DC power convertors; battery storage plants; maximum power point trackers; photovoltaic power systems; pumps; secondary cells; DC-link voltage; PV-battery powered pump system; battery charging; buck-boost converter; conversion efficiency improvement; maximum power point tracking; repeated power processing reduction; single-switch nonisolated DC-DC converter; Fuels; Hardware; Inductance;

fLanguage

English

Publisher

ieee

Conference_Titel

Future Energy Electronics Conference (IFEEC), 2013 1st International

Conference_Location

Tainan

Print_ISBN

978-1-4799-0071-8

Type

conf

DOI

10.1109/IFEEC.2013.6687531

Filename

6687531