A three-port bidirectional DC-DC converter with zero-ripple terminal currents for PV/microgrid applications

Author

Biswas, Santosh ; Dhople, S. ; Mohan, Ned

Author_Institution

ECE Dept., Univ. of Minnesota, Minneapolis, MN, USA

fYear

2013

fDate

10-13 Nov. 2013

Firstpage

340

Lastpage

345

Abstract

A three-port converter (TPC) based on the Ćuk topology is proposed in this paper. The proposed converter interfaces one unidirectional input power port (envisioned to be a DC power source such as PV, or fuel cell) and two bidirectional output ports, representing the grid-tied inverter dc bus and a storage port respectively. This converter utilizes a single integrated magnetic core on which all the inductor and the transformer windings are wound. The proposed structure utilizes only three power switches, and does not require output capacitors on the output ports on account of the zero-ripple property. Depending on utilization state of the battery, three different power operation modes are defined for the converter. The features of the proposed converter are analyzed and then verified by means of simulation results for different operation conditions.

Keywords

DC-DC power convertors; distributed power generation; inductors; invertors; photovoltaic power systems; power grids; switches; transformer cores; transformer windings; Cuk topology; PV applications; TPC; bidirectional DC-DC converter; bidirectional output port; grid tied inverter DC bus; inductor; integrated magnetic core; microgrid applications; power operation mode; power switches; storage port; three port converter; transformer windings; unidirectional input power port; zero ripple terminal current; Circuit faults; Equations; Inductors; Mathematical model; Saturation magnetization; Topology; Windings;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, IECON 2013 - 39th Annual Conference of the IEEE

Conference_Location

Vienna

ISSN

1553-572X

Type

conf

DOI

10.1109/IECON.2013.6699159

Filename

6699159