Smart grid welding system

• US 10,144,084 B2
• Filed: 07/06/2015
• Issued: 12/04/2018
• Est. Priority Date: 01/22/2010
• Status: Active Grant

• Current Assignee: Illinois Tool Works Inc.
• Original Assignee: Illinois Tool Works Inc.
• Inventors: Bunker, Thomas Allen, Albrecht, Bruce Patrick
• Primary Examiner(s): LAFLAME JR, MICHAEL A
• Application Number:
  US14/792,246
• Publication Number:
  US 20150306692A1
• Time in Patent Office: 1,247 Days
• Field of Search: 2191211-162
• CPC Class Codes: B23K 9/1043 characterised by the electric circuit B23K9/1012 takes precedence
• CPC Class Codes: B23K 9/1056 by using digital means B23K9/1068 takes precedence
• CPC Class Codes: B23K 9/1075 Parallel power supply, i.e. multiple power supplies or multiple inverters supplying a single arc or welding current

Abstract

Welding system and method permit exchange of data with Smart Grid monitors and/or controllers. The welding systems include a welding power supply configured to convert power between the power grid and the welding power supply. A grid interface cooperates with control circuitry to transmit data to and/or from the grid monitors and/or controllers on the grid side. The control circuitry may control operation of the welding power supply based upon data from the grid. The system may include power generation devices (e.g., engine-drive generators) and energy storage devices (e.g., batteries). The control circuitry may control operation of such devices, the exchange of power between them, and the draw of power from the grid or the application of power to the grid based upon the data exchanged with the grid monitors and/or controllers.

Claims

1. A system, comprising:

a welding power supply comprising;

power conversion circuitry of the welding power supply configured to receive power from a power grid and to convert the power received from the power grid to welding power suitable for a welding operation;

a grid interface of the welding power supply configured to transmit data to a grid-side monitor or controller in one or more components of an energy producer or distributor and to receive data from the grid-side monitor or controller; and

control circuitry of the welding power supply coupled to the grid interface and configured to control operation of the power conversion circuitry based at least partially upon the data received by the grid interface from the grid-side monitor or controller, wherein the control circuitry comprises an operator interface device configured to enable selection of a weld setting.

2. The welding power supply of claim 1, wherein the grid interface is configured to transmit data relating to operation of the welding power supply to the grid-side monitor or controller.

3. The welding power supply of claim 1, wherein the welding power supply comprises an energy storage device configured to store energy for use by the welding operation, and wherein the control circuitry is configured to control charging of the energy storage device, discharging of the energy storage device, or both, based at least partially upon the data received from the grid-side monitor or controller.

4. The welding power supply of claim 3, wherein the control circuitry is configured to command the power conversion circuitry to draw power partially or proportionally from the energy storage device or partially or proportionally from the power grid based at least partially upon the data received from the grid-side monitor or controller.

5. The welding power supply of claim 1, wherein the grid interface is configured to transmit the data to the grid-side monitor or controller or to receive the data from the grid-side monitor or controller during an arc welding operation.

6. The welding power supply of claim 1, wherein the data transmitted to the grid-side monitor or controller comprises power-related data.

7. The welding power supply of claim 6, wherein the powerrelated data corresponds to a power need of the welding power supply, power utilization by the welding power supply, or a combination thereof.

8. The welding power supply of claim 1, wherein the data received from the grid-side monitor or controller comprises power-related data.

9. The welding power supply of claim 8, wherein the power related data corresponds to past power demand, present power demand, power availability, power factor related information, power pricing, or a combination thereof.

10. The welding power supply of claim 1, wherein the control circuitry is configured to control operation of the power conversion circuitry based at least partially upon operator selection of weld settings received via an operator interface.

11. The system of claim 1, comprising:

a wire feeder; and

a weld cable,

wherein the wire feeder is coupled to the welding power supply via the weld cable.

12. The system of claim 1, comprising:

a welding torch; and

a weld cable,

wherein the welding torch is coupled to the welding power supply via the weld cable.

13. The system of claim 3, wherein the control circuitry is configured to control charging of the energy storage device by commanding the power conversion circuitry to use power received from the power grid to charge the energy storage device.

14. The system of claim 1, wherein the control circuitry is configured to control operation of the power conversion circuitry related to the power from the power grid received by the power conversion circuitry, based at least partially upon the data received from the grid-side monitor or controller.

15. The system of claim 1, wherein the grid interface comprises a dedicated grid interface board.