Energy routers based on the electronic power transformer are suitable
for the AC-DC hybrid grid with multiple voltage levels, but their
structures are complex. This paper proposes a novel energy router based
on the multi-winding line frequency transformer. By a combination of a
multi-winding line frequency transformer and power electronic devices,
the proposed energy router can take advantage of the high reliability of
the multi-winding line frequency transformer and the high
controllability of power electronic devices. The proposed energy router
is suitable for the AC-DC hybrid grid with multiple voltage levels and
has the characteristic of a simple structure. The simulations and
experimental results demonstrate the effectiveness of the proposed
energy router.