Comprehensive Efficiency, Weight, and Volume Comparison of SiC- and Si-Based Bidirectional DC–DC Converters for Hybrid Electric Vehicles

Development of a Novel Bidirectional DC/DC Converter Topology with High Voltage Conversion Ratio for Electric Vehicles and DC-Microgrids

“…If the inductance is selected to be larger than the boundary inductance, the studied BDC will operate in CCM. The studied BDC can operate not only in charge state but also in discharge state, the boundary inductance can be derived as below from Equations (19) and (21), respectively. Figure 13.…”

“…Usually, in dc-microgrid systems, when the voltage difference between the EV battery, BES and the dc-bus is large, a bidirectional dc/dc converter (BDC) with a high voltage conversion ratio for both buck and boost operations is required [4,7]. In the previous literatures, BDCs circuit topologies of the isolated [8][9][10] and non-isolated type [11][12][13][14][15][16][17][18][19][20][21][22][23] have been described for a variety of system applications. Isolated BDCs use the transformer to implement the galvanic isolation and to comply with the different standards.…”

“…In [18], a traditional buck-boost BDC was adopted, however, the voltage conversion ratio is limited because of the equivalent series resistance (ESR) of the inductors and capacitors and effect of the active switches [19]. Circuit structure of the bidirectional double-boost cascaded topology [17].…”

“…In [18], a traditional buck-boost BDC was adopted, however, the voltage conversion ratio is limited because of the equivalent series resistance (ESR) of the inductors and capacitors and effect of the active switches [19]. Compared with isolated types, BDCs with coupled-inductors for non-isolated applications possess simpler winding structures and lower conduction losses [12][13][14][15][16][17].…”

High efficiency non-isolated three port DC-DC converter for PV-battery systems

“…Where previous work generally reports efficiency improvements in power conversion units by utilizing new kind of switching devices made of Silicon Carbide [18,19,20] or proposing optimized design procedures for the given topology [21,22], this work follows a more direct approach by reducing the number of conversion stages while keeping its simplicity. This is done by adapting well-known buck and boost topologies capable of operating with all the power flows within one power conversion stage as shown in Fig.3.…”