Fast Response Dual Active Bridge Converter With Elimination Of Transient Dc Offset By Intermediate Asymmetric Modulation

Abstract

Dual active bridge converters are attractive solution for bidirectional power conversion, but suffers from transient performance as load changes result in slower dissipation of dc offset produced in inductor and magnetizing current. Additionally, with dc offsets in magnetizing current, core saturation and high peak current may occur when repetitive load transients are applied. In this work, an asymmetric modulation scheme is proposed and its theoretical and simulated transient analysis is carried out. Additionally, zero average current control is proposed which eliminates the dc offset in both inductor and magnetizing current. Theoretical results were verified in PSIM simulation. Experimental verification has also been provided using a 100W prototype. The digital logic of the proposed asymmetric modulation has been implemented in an FPGA controller for experimental verification.

Publication Date

12-3-2018

Publication Title

2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

Number of Pages

637-642

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/ECCE.2018.8558467

Socpus ID

85060296713 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85060296713

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