I am designing a DAB DC DC Converter and when I am connecting a battery block in Matlab and fix its specification lets say 350 V and 25 A, when I am giving input as 600V, Battery would charge to 350V and if I fix battery voltage more than 600V , e.g 650V . Then it is charging to 650V, how is it possible to charge battery more than supply, technically its should supply to input side.

P.S : I am working in open loop.