Analysis, Modeling, and Control of Half-Bridge Current-Source Converter for Energy Management of Supercapacitor Modules in Traction Applications

Jorge Garcia, Pablo Garcia, Fabio Giulii Capponi and Giulio De Donato
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Jorge Garcia: LEMUR Group, Department of Electrical Engineering, University of Oviedo, 33204 Gijon, Spain
Pablo Garcia: LEMUR Group, Department of Electrical Engineering, University of Oviedo, 33204 Gijon, Spain
Fabio Giulii Capponi: Department of Astronautical, Electrical and Energy Engineering, University of Roma “La Sapienza”, 00184 Roma, Italy
Giulio De Donato: Department of Astronautical, Electrical and Energy Engineering, University of Roma “La Sapienza”, 00184 Roma, Italy

Energies, 2018, vol. 11, issue 9, 1-22

Abstract: In this work, an in-depth investigation was performed on the properties of the half-bridge current-source (HBCS) bidirectional direct current (DC)-to-DC converter, used to interface two DC-link voltage sources with a high-voltage-rating mismatch. The intended implementation is particularly suitable for the interfacing of a supercapacitor (SC) module and a battery stack in a hybrid storage system (HSS) for automotive applications. It is demonstrated that the use of a synchronous rectification (SR) modulation scheme benefits both the power-stage performance (in terms of efficiency and reliability) and the control-stage performance (in terms of simplicity and versatility). Furthermore, an average model of the converter, valid for every operating condition, is derived and utilized as a tool for the design of the control system. This model includes the effects of parasitic elements (mainly the leakage inductance of the transformer) and of the converter snubbers. A 3 kW prototype of the converter was used for experimental validation of the converter modeling, design, and performance. Finally, a discussion on the control strategy of the converter operation is included.

Keywords: hybrid storage systems; power electronic converters; half-bridge current-source converters; supercapacitors (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: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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