HYBRID WELDING CONTROL TECHNIQUE

摘要

A hybrid welding system is provided. In one embodiment, the welding system includes an engine-driven generator, an energy storage device, a contactor, and a controller. The controller may be configured to control delivery of weld power from the generator when a commanded output is below a threshold level, and from both the generator and the energy storage when the commanded output is above the threshold level. Closing of the contactor enables the energy storage device to contribute to weld power during welding operations and to be charged by the generator output independent of charging between weld operations. Additional hybrid welding systems and methods are also disclosed.

主权项

1. A welding system comprising:
a generator; an engine configured to drive the generator to produce a first power output; an energy storage device configured to discharge energy to produce a second power output; a controller configured to control delivery of a weld power output from the welding system, the weld power output including power from at least one of the first power output or the second power output, wherein the controller in operation causes the weld output power to include power from the first power output but not the second power output when a commanded output is below a threshold and to include power from both the first power output and the second power output when the commanded output is above the threshold; and a contactor controlled by the controller and configured to enable the energy storage device to provide the second power output as part of the weld output power when the commanded output is above the threshold, wherein the controller in operation commands closing of the contactor to provide the second power output as part of the weld output power during weld operations and to enable the first power output to charge the energy storage device independent of the charging of the energy storage device between weld operations.