Cable arrangement of an energy storage system
Systems and methods for regulating a short circuit current associated with an energy storage system are provided. In one embodiment, an energy storage system can include an energy storage device and a switching power supply coupled to the energy storage device. The energy storage system can further include one or more cables configured to couple the energy storage device to the switching power supply, and a magnetic framework positioned proximate the one or more cables. The magnetic framework can include one or more magnetic structures and can span at least a portion of the length of the cables. The one or more cables are positioned in a physical arrangement that, in conjunction with the magnetic framework, facilitates a selected inductance between the cables.
1. An energy storage system comprising:
an energy storage device;
a switching power supply coupled to the energy storage device;
one or more cables configured to couple the energy storage device to the switching power supply; and
a magnetic framework positioned proximate the one or more cables, the magnetic framework comprising one or more magnetic structures, the magnetic framework spanning at least a portion of a length of the one or more cables;
wherein the one or more cables are positioned in a physical arrangement that, in conjunction with the magnetic framework, facilitates a selected inductance between the cables; and
wherein the one or more cables comprise a positive cable grouping, a negative cable grouping, and a ground cable grouping, and wherein the ground cable grouping is positioned between the positive cable grouping and the negative cable grouping in a substantially parallel manner with respect to the positive cable grouping and the negative cable grouping, and wherein the magnetic framework is positioned such that at least two magnetic structures substantially surround at least one cable grouping.
2. The energy storage system of claim 1 , wherein the physical arrangement of the one or more cables comprises a parallel arrangement, such that the positive cable grouping is positioned in a substantially parallel manner with respect to the negative cable grouping.
3. The energy storage system of claim 1 , wherein each cable grouping is housed in a separate plastic conduit.
4. The energy storage system of claim 2 , wherein the magnetic framework is positioned such that at least one magnetic structure is positioned between the positive cable grouping and the negative cable grouping.
5. The energy storage system of claim 1 , wherein the magnetic framework is positioned such that at least one magnetic structure is positioned between the positive cable grouping and the ground cable grouping, and at least one magnetic structure is positioned between the ground cable grouping and the negative cable grouping.
6. The energy storage system of claim 1 , wherein the physical arrangement of the one or more cables comprises a physical spacing between each cable grouping.
7. The energy storage system of claim 6 , wherein the physical spacing is a spacing between each cable grouping of between three inches and 8 inches.
8. The energy storage system of claim 1 , wherein the selected inductance is determined based at least in part on a short circuit current of the energy storage device.
9. The energy storage system of claim 8 , wherein the selected inductance is determined to control a peak short circuit current of the energy storage device during a short circuit event.
10. The energy storage system of claim 1 , wherein the magnetic framework comprises at least one steel I-beam structure.
11. The energy storage system of claim 1 , wherein the magnetic framework comprises at least one steel C-channel structure.
12. The energy storage system of claim 1 , wherein the magnetic framework is configured to manipulate a magnetic field associated with a current flow in the one or more cables based at least in part on the selected inductance.
13. The energy storage system of claim 1 , wherein the one or more cables couple the energy storage device to the switching power supply and the switching power supply to the DC bus of the power converter.
14. An energy storage system comprising:
a power converter system having a DC bus;
an energy storage system coupled to the DC bus of the power converter, the energy storage system comprising an energy storage device and a switching power supply coupled between the energy storage device and the DC bus of the power converter;
one or more cables configured to couple the energy storage device to the switching power supply; and
a magnetic framework positioned proximate the one or more cables, the magnetic framework comprising one or more magnetic structures, the magnetic framework spanning at least a portion of the one or more cables;
wherein the one or more cables are positioned in a physical arrangement that, in conjunction with the magnetic framework, facilitates a selected inductance between the cables; and
wherein the one or more cables comprise a positive cable grouping, a negative cable grouping, and a ground cable grouping, and wherein the ground cable grouping is positioned between the positive cable grouping and the negative cable grouping in a substantially parallel manner with respect to the positive cable grouping and the negative cable grouping, and wherein the magnetic framework is positioned such that at least two magnetic structures substantially surround at least one cable grouping.
15. The energy storage system of claim 14 , wherein the one or more cables comprise a positive cable grouping and a negative cable grouping, and wherein the physical arrangement of the one or more cables comprises a parallel arrangement, such that the positive cable grouping is positioned in a substantially parallel manner with respect to the negative cable grouping.
16. The energy storage system of claim 1 , wherein the energy storage system is part of a renewable energy system.
17. A method of regulating a current associated with an energy storage device, the method comprising:
identifying a selected inductance based at least in part on a short circuit current of an energy storage device associated with an energy storage system;
determining a physical arrangement of one or more cable groupings associated with the energy storage system based at least in part on the selected inductance, wherein the one or more cable groupings comprise a positive cable grouping, a negative cable grouping, and a ground cable grouping;
determining a magnetic framework configuration to be positioned proximate the one or more cable groupings based at least in part on the selected inductance; and
positioning the ground cable grouping between the positive cable grouping and the negative cable grouping in a substantially parallel manner with respect to the positive cable grouping and the negative cable grouping, wherein the magnetic framework is positioned such that at least two magnetic structures substantially surround at least one cable grouping.
18. The method of claim 17 , further comprising positioning the one or more cable groupings and the magnetic framework based at least in part on the determined physical arrangement and the determined magnetic framework configuration.