Design of a non-isolated single-switch three-port DC-DC converter for standalone PV-battery power system

Author

Junkai Zhao ; Iu, Herbert H. C. ; Fernando, Tyrone ; Le An ; Dah-Chuan Lu, Dylan

Author_Institution

Sch. of Electr., Electron. & Comput. Eng., Univ. of Western Australia, Crawley, WA, Australia

fYear

2015

fDate

24-27 May 2015

Firstpage

2493

Lastpage

2496

Abstract

This paper proposes a design of a single-switch non-isolated three-port converter for a standalone photovoltaic (PV) power system with energy storage. The three-port converter is obtained by combining the switches of two conventional cascaded DC-DC converters. Pulse-width modulation (PWM) and pulse-frequency modulation (PFM) are utilized to regulate the two converters respectively. The proposed design reduces the components and the size of the converter and maximizes the number of control variables. Then, the topology of the proposed converter is analyzed with its operation modes. Finally, simulation and experimental results are given to verify the proposed design.

Keywords

DC-DC power convertors; PWM power convertors; battery storage plants; photovoltaic power systems; PFM; PWM; energy storage; nonisolated single-switch three-port DC-DC converter; pulse-frequency modulation; pulse-width modulation; standalone PV-battery power system; standalone photovoltaic power system; Batteries; Capacitors; Control systems; DC-DC power converters; Inductors; Pulse width modulation; Voltage control; DC-DC converter; Photovoltaic (PV) systems; maximum power point tracking (MPPT); pulse frequency modulation (PFM); pulse width modulation (PWM); single-switch converters; three-port converters;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2015 IEEE International Symposium on

Conference_Location

Lisbon

Type

conf

DOI

10.1109/ISCAS.2015.7169191

Filename

7169191