Analysis of quasi-square-wave operation of DAB DC–DC converter. Issue 1 (2nd January 2016)

• Record Type: Journal Article
• Authors: Naayagi, R.T.; Forsyth, A.J.; Shuttleworth, R.
• Is Part Of: International journal of electronics letters. Volume 4:Issue 1(2016)
• Page Start: 62
• Page End: 74
• Publication Date: 2016-01-02
• Subjects: dual-active bridge -- quasi-square-wave -- average current -- RMS current -- peak current -- dead-time -- soft-switching; Electronics -- Periodicals; Electronics; Periodicals; 621.38105
• DOI: 10.1080/21681724.2014.945191
• Languages: English
• ISSNs: 2168-1732

Abstract

Abstract : This work makes a novel contribution to the analysis of quasi-square-wave operation of dual-active bridge (DAB) converter by deriving equations for root mean square (RMS) and average device currents and RMS and peak inductor/transformer currents – these equations are useful in predicting device and passive component losses. Quasi-square-wave operation of the DAB converter is verified through Saber simulations and experimentation, validating the mathematical analysis. It is observed that quasi-square-wave mode improves average power transfer and the converter efficiency besides enhancing its soft-switching region without introducing additional passive components. The effect of quasi-square-wave on RMS and peak currents of devices and transformer/inductor is also discussed.