| 摘要 |
It is presented a DC supply unit (9-1) for a power provision unit for use in a DC supply network. The DC supply unit comprises a first current blocking device (17) arranged to allow current to flow in a first direction (19-1) through the first current blocking device (17), and to block current that flows in a second direction (19-2) opposite the first direction (19-1). In this context, the first direction is the flow direction of current during normal operation of the DC supply network. The DC supply unit (9-1) further comprises a first switching unit (21) arranged in anti-parallel connection with the first current blocking device (17), wherein the first switching unit (21) is controllable to selectively allow current to flow through the first switching unit (21) in the second direction (19-2) so as to bypass the first current blocking device (17) and to block current in the second direction (19-2). It is also presented a power provision unit comprising such a DC supply unit. |
