Title :
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
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;
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
DOI :
10.1109/DRPT.2008.4523866
