High-reliability long-backup-time super UPS with multiple energy sources

Author

Haijin Li ; Wenping Zhang ; Dehong Xu

Author_Institution

Power Electron. Res. Inst., Zhejiang Univ., Hangzhou, China

fYear

2013

fDate

15-19 Sept. 2013

Firstpage

4926

Lastpage

4933

Abstract

The power rating of Uninterrupted Power Supply (UPS) has been increasing continuously. In the near future it will increase to MW and dozens of MW. Reliability and environmental friendliness are critical issues for this application. Aiming at the requirements of ultra-high power UPS, this paper proposes a concept of Super UPS using multiple energy sources (Grid, Gas Turbine (GT), Fuel Cell (FC), Li-ion Battery (LB) and Photovoltaic (PV)) to boost the reliability of system and improve environmental friendliness. Firstly, four typical structures for Super UPS are analyzed and the best choice of structure for ultra-high power high reliability application is given. Then, operation modes of proposed structure for Super UPS are introduced. Finally, results of reliability computation verified that the reliability of Super UPS is much higher than traditional UPS.

Keywords

environmental factors; power system reliability; uninterruptible power supplies; environmental friendliness improvement; fuel cell source; gas turbine source; grid source; high-reliability long-backup-time super UPS; lithium-ion battery source; multiple energy sources; photovoltaic source; power rating; system reliability; uninterrupted power supply; Availability; Batteries; Inverters; Rectifiers; Renewable energy sources; Uninterruptible power systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2013 IEEE

Conference_Location

Denver, CO

Type

conf

DOI

10.1109/ECCE.2013.6647365

Filename

6647365