I am working on designing a fast DC charging for EVs using the multiphase interleaved buck converter (IBC) topology as the DC charger. The charging power can reach 350 kW with 1000V and 350A output charging current in order to reduce the charging time. Obviously, to reach to this high charging current, five (IBCs) are connected in parallel each rated at 70 kW (70A).
Anyhow, my issue is with the simulation results in Simulink. The SoC of the battery model in Simulink is increasing when this amount of high current is applied, however, it's increasing VERY slowly even though the charging current is very high!
So pls let me know if you could help with this issue?
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Hi I'm an electrical engineer and a lecturer in a reputed university. I do have skills and experience of accomplishing power converter design. So I might be able to help you. Regards Ghulam Shabbir