Patent ID: 10384290

Abstract:
Engine driven power supplies with output reduction are disclosed. An example engine-driven welding power supply for providing a welding-type output includes an engine, a generator mechanically linked to the engine, power conditioning circuitry, and a controller. The generator generates output power based on mechanical input from the engine. The power conditioning circuitry converts the output power from the generator to welding-type power based on a commanded welding-type output. The controller reduces a welding-type output of the power conditioning circuitry from the commanded welding-type output by an amount proportional to a difference between a speed of the engine and a commanded engine speed while monitoring the difference between the speed of the engine and the commanded engine speed, decreases the welding-type output until the difference between the speed of the engine and the commanded engine speed decreases, and increases the welding-type output as the difference between the speed of the engine and the commanded engine speed decreases until the welding-type output equals the commanded welding-type output.