Patent ID: 9692227
Date: 2017-06-27
CPC Classifications: H01L,H02H,H02J

Claim:
1. A DC supply unit which at one end is arranged to be connected to a DC supply network and which at another end is arranged to be connected to an internal bus of a power provision unit, wherein the DC supply unit comprises: a first current blocking device configured so that current in a first direction flows through the first current blocking device and configured to block current that flows in a second direction opposite the first direction, and a first switching unit, wherein the first switching unit alone or in combination with at least one other electrical component is arranged in anti-parallel connection with the first current blocking device, wherein the first switching unit is controllable to selectively be set in an on-state such that reverse current flows through the first switching unit in the second direction so as to bypass the first current blocking device or in an off-state to block current in the second direction when a fault occurs in the DC supply network, wherein, in absence of a fault in the DC supply network, the first switching unit is in the on-state and reverse current in the second direction flows through the first switching unit.