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This paper describes the power stage of a non-isolated unidirectional 400 V 100 kW DCDC converter for fuel cell vehicles that reaches a switching frequency of 150 kHz with industry power modules. The power modules are equipped with custom made DCB-substrates assembled with a combination of fast 600 V super-junction Si-Mosfets and SiC-Schottky Diodes. For all other components like drivers, current...
This paper compares different topologies of non-isolated high conversion ratio dc-dc converter for fuel cell application. These converters transfer the low dc voltage of fuel cell to high dc voltage in dc link. In this study, ripple content of both input current and output voltage are compared and discussed. A comparison and discussion of the voltage and current stress on the switch are also presented...
An electric vehicle can be powered by either a single source or a combination of multiple sources, e.g. lead-acid batteries, solar cells, and fuel cells. Because of energy crisis and environmental protection, coordination of different power sources for an electric vehicle has recently been becoming an important issue. The objective of this paper is to develop a power management system for an electric...
Electrical power systems in future hybrid and fuel cell vehicles may employ three voltage (14V, 42V and high voltage (HV)) nets. These will be necessary to accommodate existing 14V loads as well as efficiently handle new heavy loads at the 42V net and an electrical traction drive on the HV bus. A low-cost bi-directional dc-dc converter was proposed in [10] for connecting the three voltage nets. The...
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