Operation of Current-fed Dual Active Bridge DC-DC Converters for Microgrid
A. Geetha1, N.P. Subramaniam2, R. Gnanadass3
1A. Geetha is a Research Scholar in the Department of Electrical and Electronics Engineering, Pondicherry Engineering College, Pondicherry University, Pondicherry, India.
2Dr. N. P. Subramaniam, Assistant Professor in the Department of Electrical and Electronics Engineering, Pondicherry Engineering College, Pondicherry University, India.
3Dr. R. Gnanadass, Professor in the Department of Electrical and Electronics Engineering, Pondicherry Engineering College, Pondicherry University, India.
Manuscript received on 01 March 2019 | Revised Manuscript received on 09 March 2019 | Manuscript published on 30 July 2019 | PP:3167-3175 | Volume-8 Issue-2, July 2019 | Retrieval Number: B2912078219/19©BEIESP | DOI: 10.35940/ijrte.B2912.078219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Dual Active Bridge (DAB) is an isolated bidirectional DC-DC converter, which comprises two full bridge converters linked through a high frequency transformer. It has low stresses and permits high frequency performance because of the soft – switching. All the switches in the converter achieves the turn ON & OFF during Zero Voltage Switching (ZVS) and Zero Current Switching (ZCS) to minimize switching loss. Generally, DAB is classified as two types, namely, voltage-fed and current-fed variants. At light load conditions, soft-switching is not realized in case of voltage-fed DAB topologies. The application of current-fed DAB converters is to reduce the losses at the time of switching under light load conditions and improves the efficiency. This paper describes the various topologies of voltage-fed and current-fed DAB used for different applications in microgrid and fuel cell energy generation system by using the simulation. The performance of voltage-fed and current-fed DAB with snubber-less converters are also demonstrated and their effectiveness are validated.
Index Terms: Bidirectional, Current-fed Converter, Dual Active Bridge, Microgrid.
Scope of the Article: Operational Research