US 12,731,980 B2Granted

Protection in a direct current high voltage electric system

AssigneeAirbus SAS

InventorsFlorian Kapaun, Gerhard Steiner

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Abstract

An electrical arrangement for protection in a direct current high voltage electric system comprises an input connection with an input terminal, an output connection with a output terminal, a main disconnection component between the input terminal and the output terminal and at least one clamping circuit between the input terminal and the output terminal. The clamping circuit has a first connecting path and a second connecting path, arranged in parallel to each other. The first connection path comprises a storage coupling for temporarily buffering an overvoltage present between the input terminal and the output terminal. The first connection path also comprises an activatable switch for selectably connecting the storage coupling with the output terminal. The second connection path comprises a supply coupling for operating the activatable switch in dependency of the overvoltage.

Claims16

Dependent claims

An electrical arrangement for protection in a direct current high voltage electric system, the arrangement comprising:

an input connection with an input terminal;
an output connection with a output terminal;
a main disconnection component between the input terminal and the output terminal;
and
at least one clamping circuit between the input terminal and the output terminal,
wherein the at least one clamping circuit has a first connecting path and a second connecting path, arranged in parallel to each other;
wherein the first connection path comprises:
a storage coupling for temporarily buffering an overvoltage present between the input terminal and the output terminal;
and
an activatable switch for selectably connecting the storage coupling with the output terminal;
and
wherein the second connection path comprises:
a supply coupling for operating the activatable switch in dependency of the overvoltage;
wherein the supply coupling comprises a first transorber, a second transorber and a third transorber connected in series;
wherein a supply resistor is connected to a connection point of the second transorber and the third transorber;
wherein a supply diode is connected between the supply resistor and the activatable switch;
and
wherein a supply filter capacitor is connected between a connection point of the supply resistor and the supply diode.

15 more elements

An electrical arrangement for protection in a direct current high voltage electric system, the arrangement comprising:

an input connection with an input terminal;
an output connection with a output terminal;
a main disconnection component between the input terminal and the output terminal;
and
at least one clamping circuit between the input terminal and the output terminal, wherein the at least one clamping circuit has a first connecting path and a second connecting path, arranged in parallel to each other;
wherein the first connection path comprises:
a storage coupling for temporarily buffering an overvoltage present between the input terminal and the output terminal;
and
an activatable switch for selectably connecting the storage coupling with the output terminal;
and
wherein the second connection path comprises a supply coupling for operating the activatable switch in dependency of the overvoltage;
wherein the electrical arrangement is provided as a bi-directional electrical arrangement;
wherein the input connection comprises a first input terminal and a second input terminal;
wherein the main disconnection component comprises a first main disconnection element between the first input terminal and the output terminal;
and a second main disconnection element between the second input terminal and the output terminal;
wherein the at least one clamping circuit is provided as a first clamping circuit between the first input terminal and a midpoint terminal;
and wherein a second clamping circuit is provided between the second input terminal and the midpoint terminal;
wherein the first clamping circuit has the first connecting path and the second connecting path;
and wherein the second clamping circuit has a third connecting path and a fourth connecting path, arranged in parallel to each other;
wherein the third connection path comprises a second storage coupling for temporarily buffering an overvoltage present between the second input terminal and the midpoint terminal;
and a second activatable switch for selectably connecting the second storage coupling with the output terminal;
and
wherein the fourth connection path comprises a second supply coupling for operating the second activatable switch in dependency of the overvoltage;
wherein the second connection path and the fourth connection path are provided at least partly as a shared connection path.

21 more elements

Dependencies are inferred from the claim text.