Implementation of SPS and DPS control techniques on DAB converter with comparative analysis

Abstract

DC-DC Converters are the most basic and indispensable converters which find its application in the renewable-based generation systems as interfacing converters. The DC microgrid based on distributed generations including solar and wind energy sources requires bidirectional property as well as energy storage capability to be able to use as a backup or in normal operation of the microgrid. The dual active bridge is one such promising converter which employs the bidirectional capability along with storage and isolation. This converter is discussed here incorporating the dual and single phase shift techniques to regulate power flow in both directions. Closed loop control and simulation results are presented for both cases. On comparing the two control techniques, it is found that the DPS control leads to a reduction in the switching stress as well as the peak to peak inductor current. Thus, with the increase in the degree of freedom of control, the performance of the DAB converter is enhanced using DPS control.

Subject Classification:

• Information and communication
• circuits

Keywords:

• Dual Active Bridge (DAB),H bridge
• Single Phase Shift(SPS)
• Dual Phase Shift (DPS)
• Triple Phase Shift(TPS)