A novel switching strategy for isolated Dual-active-bridge converter

Author

Kun Yan ; Hui Wang ; Guangzhu Wang

Author_Institution

Sch. of Electr. Eng., Shandong Univ., Jinan, China

fYear

2014

fDate

5-8 Nov. 2014

Firstpage

1032

Lastpage

1037

Abstract

The efficiency of Dual active bridge (DAB) converter is poor when it works with light load or the input voltage and output voltage are not matching with the transformer ratio. A novel one side single half bridge pulse-width-modulation plus phase-shift (HPPS) switching strategy is proposed in this paper to improve DAB work efficiency. The operation principle is demonstrated, and its power mathematic model is established. Based on this model, a detailed analysis is proceeded which including the ZVS range comparison and the current RMS value comparison with traditional switching strategy (TPS). The validity and feasibility of proposed HPPS control is verified by the simulation results.

Keywords

PWM power convertors; mathematical analysis; phase shifters; power control; transformers; zero voltage switching; DAB work efficiency; HPPS control; TPS control power; ZVS range comparison; current RMS value comparison; isolated dual-active-bridge converter efficiency; light load; operation principle; power mathematic model; side single half bridge pulse width modulation plus phase shift switching strategy; traditional switching strategy; transformer ratio; Bridge circuits; Educational institutions; Inductance; Soft switching; Switches; Voltage control; Dual-active-bridge converter; Pulse-with modulation; efficiency; phase-shift control; soft switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics and Application Conference and Exposition (PEAC), 2014 International

Conference_Location

Shanghai

Type

conf

DOI

10.1109/PEAC.2014.7038002

Filename

7038002