Highly redundant DC voltage network
AssigneeSiemens Aktiengesellschaft
InventorChristian Gritsch
Life of this patent
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Abstract
A DC voltage network includes at least three energy storage networks, each having an energy store supplying a DC voltage, and at least three power converters implemented as DC voltage converters. The energy store and the power converters are electrically connected at a common point, At least three DC voltage sub-networks are each connected to a respective power converter of the energy storage networks. A feed device connects a respective DC voltage sub-network to an AC voltage network. The DC voltage network may be installed in a vehicle, in particular a ship. In a method of controlling the DC voltage network in the event of a fault, at least one of the power converters is switched off to protect the DC voltage network, depending on the location of the fault.
Claims9
A DC voltage network, comprising:
- at least three energy storage networks, each energy storage network comprising an energy store supplying a DC voltage to the energy storage network, and each energy storage network further comprising at least three power converters implemented as DC voltage converters, the energy store and a first voltage side of each of the at least three power converters being electrically connected at a common point;
- at least three DC voltage sub-networks, each DC voltage sub-network being connected to a second voltage side of a respective power converter of each of the at least three energy storage networks;
- and
- at least three feed devices, each feed device connecting a respective one of the at least three DC voltage sub-networks to at least one AC voltage network.
A vehicle comprising a DC voltage network, said DC voltage network comprising:
- at least three energy storage networks, each energy storage network comprising an energy store supplying a DC voltage to the energy storage network, and each energy storage network further comprising at least three power converters implemented as DC voltage converters, the energy store and a first voltage side of each of the at least three power converters being electrically connected at a common point,
- at least three DC voltage sub-networks, each DC voltage sub-network being connected to a second voltage side of a respective power converter of each of the at least three energy storage networks, and
- at least three feed devices, each feed device connecting a respective one of the at least three DC voltage sub-networks to at least one AC voltage network.
A method for controlling a DC voltage network including at least three energy storage networks, each energy storage network comprising an energy store supplying a DC voltage to the energy storage network, and each energy storage network further comprising at least three power converters implemented as DC voltage converters, the energy store and a first voltage side of each of the at least three power converters being electrically connected at a common point, at least three DC voltage sub-networks, each DC voltage sub-network being connected to a second voltage side of a respective power converter of each of the at least three energy storage networks, and at least three feed devices, each feed device connecting a respective one of the at least three DC voltage sub-networks to at least one AC voltage network, said method comprising:
- detecting an occurrence of a fault in the DC voltage network;
- determining a location of the fault;
- and
- switching at least one of the power converters off, depending on the location of the fault.
Dependencies are inferred from the claim text.