Transient　dc　bias　current　exists　in　the　power　transmission　of　dual-active-bridge　(DAB)　converters　under　the　traditional　control.　The　effects　arising　from　the　transient　dc　bias　current　include　the　increased　power　losses　of　DAB　converters　and　the　possible　transformer　saturation.　Moreover,　high　overshoot　current　might　even　damage　the　DAB　converter.　This　paper　aims　to　eliminate　the　transient　dc　bias　current　of　DAB　converter　under　the　triple-phase-shift　(TPS)　control.　An　optimal　control　scheme　under　TPS　control　is　proposed　and　validated　by　both　simulation　and　experiments.　©　2019　IEEE.