Fault current limiter with modular mutual reactor

Patent metadata

Field	Value
Publication number	US-10847971-B2
Application number	US-201916564361-A
Country	US
Kind code	B2
Filing date	Sep 9, 2019
Priority date	Oct 31, 2016
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

Embodiments of the disclosure include a fault current limiter having a first current splitting device including a primary winding and secondary winding wound around a first core, and a second current splitting device including a primary winding and a secondary winding wound around a second core. The fault current limiter may further include a fault current limiter module (e.g., a switching module) electrically connected in series between the secondary winding of the first current splitting device and the secondary winding of the second current splitting device. The fault current limiter may further include a second fault current limiter module electrically connected in series with the secondary winding of the second current splitting device. By splitting the fault current limiter into parts with fault current limiter modules interspersed between the windings, the fault current limiter may be to be built with less insulation between the windings.

First claim

What is claimed is:

1. A fault current limiter comprising:
a first current splitting device comprising a primary winding and secondary winding wound around a first core;
a second current splitting device comprising a primary winding and a secondary winding wound around a second core; and
multiple fault current limiter modules electrically connected in series between the secondary winding of the first current splitting device and the secondary winding of the second current splitting device.

2. The fault current limiter of claim 1 , wherein the primary winding of the first current splitting device is electrically connected in series with the primary winding of the second current splitting device.

3. The fault current limiter of claim 1 , further comprising a third current splitting device comprising a primary winding and a secondary winding wound around a third core, wherein one of the multiple fault current limiter modules is electrically connected in series between the secondary winding of the second current splitting device and the secondary winding of the third current splitting device.

4. The fault current limiter of claim 3 , wherein the primary winding of the second current splitting device is electrically connected in parallel with the fault current limiter module connected electrically connected in series between the secondary winding of the second current splitting device and the secondary winding of the third current splitting device.

5. The fault current limiter of claim 1 , wherein at least one of the multiple fault current limiter modules comprises a voltage protection device, a voltage control device, and a solid state switch, and wherein the voltage protection device, the voltage control device, and the solid state switch are arranged in parallel with one another.

6. The fault current limiter of claim 1 , wherein the primary winding and the secondary winding of the first current splitting device have a different number of turns, and wherein the primary winding and the secondary winding of the second current splitting device have a different number of turns.

7. A power system comprising:
a power source;
a load electrically connected to the power source; a fault current limiter electrically coupled to the power source and the load to limit an amount of current during a fault condition, the fault current limiter comprising: a first current splitting device comprising a primary winding and secondary winding wound around a first core;
a second current splitting device comprising a primary winding and a secondary winding wound around a second core; and
multiple fault current limiter modules electrically connected in series between the secondary winding of the first current splitting device and the secondary winding of the second current splitting device.

8. The power system of claim 7 , wherein the primary winding of the first current splitting device is electrically connected in series with the primary winding of the second current splitting device.

9. The power system of claim 7 , further comprising a third current splitting device comprising a primary winding and a secondary winding wound around a third core, wherein one of the multiple fault current limiter modules is electrically connected in series between the secondary winding of the second current splitting device and the secondary winding of the third current splitting device.

10. The power system of claim 9 , wherein the primary winding of the second current splitting device is electrically connected in parallel with the fault current limiter module connected electrically connected in series between the secondary winding of the second current splitting device and the secondary winding of the third current splitting device.

11. The power system of claim 7 , wherein at least one of the multiple fault current limiter modules comprises a voltage protection device, a voltage control device, and a solid state switch, and wherein the voltage protection device, the voltage control device, and the solid state switch are arranged in parallel with one another.

12. The power system of claim 7 , wherein the primary winding and the secondary winding of the first current splitting device have a different number of turns, and wherein the primary winding and the secondary winding of the second current splitting device have a different number of turns.

13. A fault current limiter comprising:
a first current splitting device comprising a primary winding and secondary winding wound around a first core;
a second current splitting device comprising a primary winding and a secondary winding wound around a second core; and
multiple fault current limiter modules electrically connected in series between the secondary winding of the first current splitting device and the secondary winding of the second current splitting device;
wherein one of the multiple fault current limiter modules is electrically connected in series with the secondary winding of the second current splitting device.

14. The fault current limiter of claim 13 , further comprising a third current splitting device comprising a primary winding and a secondary winding wound around a third core, wherein the fault current limiter module electrically connected in series with the secondary winding of the second current splitting device is electrically connected in series between the secondary winding of the second current splitting device and the secondary winding of the third current splitting device.

15. The fault current limiter of claim 13 , wherein the primary winding of the second current splitting device is electrically connected in parallel with the multiple fault current limiter modules.

Assignees

• Varian Semiconductor Equipment Ass Inc

Inventors

• Wilson Adrian
• Kodle Shankar
• Jazebi Saeed
• Lubicki Piotr

Classifications

• H02H9/021 Primary

  Current limitation using saturable reactors (H02H9/023 takes precedence) · CPC title