DocumentCode :
132887
Title :
Research of the voltage and current sharing issue of an H-bridge based power electronic transformer
Author :
Xinyu Wang ; Shaodi Ouyang ; Jinjun Liu ; Fei Meng ; Javed, Rabia
Author_Institution :
State Key Lab. of Electr. Insulation & Power Equip. & Sch. of Electr. Eng., Xi´an Jiaotong Univ., Xi´an, China
fYear :
2014
fDate :
16-20 March 2014
Firstpage :
2216
Lastpage :
2222
Abstract :
Power Electronic Transformer (PET) is one of the most prospective components for future power electronics based power distribution systems. In this paper, the issue of the series-connected voltage sharing and the parallel-connected current sharing of a three-stage H-bridge based PET is discussed. Based on the present overall control strategy and application, it finds that the output-stage parallel-connected current sharing control serves to automatically achieve input-stage series-connected AC voltage sharing, however, the reverse does not work. In order to simplify the control strategy in the output stage, the output-current sharing control can be removed if the mismatch of the output filter inductors is within the range given by this paper. Simulation results verify the analysis.
Keywords :
electric current control; power electronics; power transformers; output filter inductors; parallel-connected current sharing control; power distribution systems; power electronic transformer; three-stage H-bridge based PET; voltage sharing issue; Automatic voltage control; Inductors; Modulation; Positron emission tomography; Power transformers; Topology;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE
Conference_Location :
Fort Worth, TX
Type :
conf
DOI :
10.1109/APEC.2014.6803612
Filename :
6803612
Link To Document :
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