Mathematical model of new bi-directional DC-AC-DC converter for supercapacitor energy storage system in photovoltaic generation

Author

Zhong, Yun ; Zhang, Jiancheng ; Li, Gengyin ; Yuan, Xindi

Author_Institution

Key Lab. of Power Syst. Protection, North China Electr. Power Univ., Baoding

fYear

2008

fDate

6-9 April 2008

Firstpage

2686

Lastpage

2690

Abstract

Energy storage system is an all-important part in photovoltaic. A new bidirectional DC-AC-DC converter for supercapacitor energy storage system in photovoltaic generation is put forward. In the beginning, some experiments on super capacitor have been performed, which shows super capacitor has good performance in quick charge and discharge. And mathematical model of the dual full-bridge bidirectional DC-AC-DC converter circuits with a transformer and its simplified model are derived. In the end, A phase current in the transformer primary side (ia) can be investigated with mathematical calculation simulation and detailed circuit simulation. The comparative result shows the mathematical model rationality. Through deduction, unified model of SESS also can be gotten.

Keywords

AC-DC power convertors; DC-AC power convertors; mathematical analysis; photovoltaic power systems; power transformers; supercapacitors; bi-directional DC-AC-DC converter; mathematical model; phase current transformer; photovoltaic generation; supercapacitor energy storage system; Bidirectional control; Capacitors; Circuit simulation; Energy storage; Mathematical model; Photovoltaic systems; Power generation; Power transformer insulation; Solar power generation; Supercapacitors; Mathematical Model; Photovoltaic Generation System; SESS; bi-directional DC-AC-DC converter;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Utility Deregulation and Restructuring and Power Technologies, 2008. DRPT 2008. Third International Conference on

Conference_Location

Nanjuing

Print_ISBN

978-7-900714-13-8

Electronic_ISBN

978-7-900714-13-8

Type

conf

DOI

10.1109/DRPT.2008.4523866

Filename

4523866