An Analysis-Supported Design of a Single Active Bridge (SAB) Converter

Rupesh Jha, Mattia Forato, Satya Prakash, Hemant Dashora and Giuseppe Buja
Additional contact information
Rupesh Jha: School of Electrical Engineering, Dr. Vishwanath Karad MIT World Peace University, Pune 411038, India
Mattia Forato: Electrolux Italia S.p.A., Susegana, 31025 Treviso, Italy
Satya Prakash: Department of Electrical Engineering, Zeal College of Engineering & Research, Pune 411041, India
Hemant Dashora: KPIT Technologies Ltd., Pune 411057, India
Giuseppe Buja: Department of Industrial Engineering, University of Padova, 35131 Padova, Italy

Energies, 2022, vol. 15, issue 2, 1-22

Abstract: Currently, due to its various applications, the high-performance isolated dc-dc converter is in demand. In applications where unidirectional power transfer is required, the single active bridge (SAB) is the most suitable one due to its simplicity and ease of control. The general schematic of the SAB converter consists of an active bridge and a passive bridge, which are connected through a high-frequency transformer thus isolated. The paper summarizes the behavior of this converter in its three operation modes, namely the continuous, discontinuous, and boundary modes. Later, the features of this converter, such as its input-to-output and external characteristics are discussed. Input-to-output characteristics include the variation of converter output power, voltage, and current with an input control variable i.e., phase-shift angle, whereas the external characteristic is the variation of the output voltage as a function of output current. In this discussion, the behavior of this converter in its extreme operating conditions is also examined. The features of the characteristics are elucidated with the help of suitable plots obtained in the MATLAB environment. Afterward, the specifications of a SAB converter are given and, based on the results of the analysis, a detailed design of its electrical elements is carried out. To validate the features and the design procedures presented in this paper, a prototype is developed. An element-wise loss estimation is also carried out and the efficiency of the converter has been found to be approximately equal to 93%. Lastly, the test was executed on this prototype, confirming the theoretical findings concerning this converter.

Keywords: single active bridge; converter characteristics; converter design; isolated dc-dc converter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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