DocumentCode :
2654923
Title :
Bi-directional isolated DC-DC converters with reactive power loss reduction for electric vehicle and grid support applications
Author :
Chu, Yongbin ; Wang, Shuo
Author_Institution :
Electr. & Comput. Dept., Univ. of Texas at San Antonio, San Antonio, TX, USA
fYear :
2012
fDate :
18-20 June 2012
Firstpage :
1
Lastpage :
6
Abstract :
In this paper, the concept of “reactive power loss” is defined and its mathematical expressions as a function of electrical parameters are derived. The reactive power loss in different cases is discussed and it is proved that soft-switching can always be achieved when reactive power loss is minimal. A novel technique to design the turns ratio of the transformer in bi-directional isolated DC-DC converters based on reactive power loss is proposed. The simulation results verify the effectiveness of the proposed technique in reducing the conduction loss in the switches of bi-directional isolated DC/DC converters. In addition, the simulation results also show that this technique can keep peak currents and RMS of currents of both bridge 1 and 2 small.
Keywords :
DC-DC power convertors; electric vehicles; losses; power grids; power transformers; reactive power; switchgear; switching convertors; zero current switching; zero voltage switching; RMS; bidirectional isolated DC-DC converter; electric vehicle; electrical parameter; grid support application; mathematical expression; reactive power loss reduction; soft-switching; transformer; Bidirectional control; Bridge circuits; Inductors; Load flow; Reactive power; Simulation; Topology;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Transportation Electrification Conference and Expo (ITEC), 2012 IEEE
Conference_Location :
Dearborn, MI
Print_ISBN :
978-1-4673-1407-7
Electronic_ISBN :
978-1-4673-1406-0
Type :
conf
DOI :
10.1109/ITEC.2012.6243472
Filename :
6243472
Link To Document :
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