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Redundant DC voltage network

A technology of direct current voltage and direct current, applied in the direction of direct current network circuit devices, parallel operation of direct current power supplies, electrical components, etc., can solve problems such as failure of electrical components, achieve cost saving, high dynamic performance, and ensure mobility.

Inactive Publication Date: 2020-01-17
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, electrical components connected to the DC voltage network are not immune to damage in the event of a short circuit
This damage can cause the corresponding electrical components to fail

Method used

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  • Redundant DC voltage network
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Examples

Experimental program
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Effect test

Embodiment Construction

[0027] figure 1 A DC voltage network 1 is shown, which has two DC voltage sub-networks 11 , 12 and an energy storage network 13 . These subnetworks are interconnected with power converters 21 , 22 so that energy can be exchanged between subnetworks 11 , 12 , 13 by means of power converters 21 . At the same time, the power converters 21, 22 realize the rapid separation of the sub-networks from each other. Connected to the DC voltage sub-networks 11 , 12 are electrical devices 3 , which represent electrical consumers or power sources. The electrical devices 3 receive their electrical energy from an AC voltage network 6 , which is connected via one or more feeders 5 to a DC voltage sub-network 11 , 12 . Alternatively or additionally, electrical energy can also be supplied or stored by an energy store 4 directly connected to the energy storage network 13 . Regulation or control of the energy flow to the energy store 4 can be effected by means of the power controllers 21 , 22 ....

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PUM

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Abstract

The invention relates to a DC voltage network (1) with a first DC voltage sub-network (11), a second DC voltage sub-network (12), an energy storage network (13), a first power converter (21), a secondpower converter (22), and an energy store (4). In order to improve the DC voltage network, the first DC voltage sub-network (11) and the energy storage network (13) are connected together by means ofthe first power converter (21), the second DC voltage sub-network (12) and the energy storage network (13) are connected together by means of the second power converter (22), the energy storage network (13) is connected to the energy store (4) such that the energy storage network (13) has the voltage of the energy store (4), and the first DC voltage sub-network (11) and / or the second DC voltage sub-network (12) can be connected to at least one AC voltage network (6) via at least one feed device (5). In order to improve the DC voltage network (1), the DC voltage network (1) has at least one connection converter (2), and the first DC voltage sub-network (11) and the second DC voltage sub-network (12) are connected together by means of the connection converter (2). The invention additionallyrelates to a method for controlling such a DC voltage network (1), wherein at least one of the power converters (21, 22, 23, 24) is deactivated in the event of a fault in the DC voltage network (1) depending on the location of the fault.

Description

technical field [0001] The invention relates to a direct voltage network having a first direct voltage subnetwork, a second direct voltage subnetwork and an energy store. Furthermore, the invention relates to a method for controlling such a DC voltage network. Background technique [0002] Today frequency converters are used in ever larger complexes and, in addition to their typical function of only regulating motors, frequency converters can also supply the grid (e.g. in wind power plants) or even form complete DC voltage networks ( Also referred to as DC (direct current) networks), only direct voltage networks should be considered here, in which electrical devices such as consumers and power sources exchange electrical energy. The supply of the DC voltage network takes place by means of one or more current converters from the AC voltage network. [0003] A typical application of DC voltage networks is the energy supply in ships or vehicles. The electrical energy is dist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J1/12
CPCH02J1/12H02J7/34H02J9/00H02J2310/44H02J2310/42H02J2310/48H02J1/10H02J1/102
Inventor 克里斯蒂安·格里奇
Owner SIEMENS AG
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