Variable speed engine driven generator for providing welding and auxiliary power

A welding-type power supply, comprising:

• a variable speed engine that provides motive power at a plurality of run speeds greater than an idle speed;
• a variable frequency generator that is connected to receive the motive power, and that provides a generator output;
• a welding-type output power circuit disposed to receive power from a bus and provide a welding-type output power;
• an auxiliary power circuit, disposed to receive power from the bus and to provide an auxiliary output power;
• and
• a controller comprising circuitry configured to:
• receive welding feedback indicative of the welding-type output power,
• receive auxiliary feedback indicative of the auxiliary output power, and
• receive engine feedback, the controller comprising:
• a welding control output connected to the welding-type output power circuit;
• an auxiliary control output connected to the auxiliary power circuit;
• an engine control output connected to the engine;
• wherein the controller is configured to control the welding-type output power, the auxiliary output power, and the engine speed based on the welding feedback, the auxiliary feedback, or the engine feedback, to avoid overloading the engine,
• wherein the controller calls for an increased engine speed when at least one of a welding process and an auxiliary process is initiated.

A welding-type power supply, comprising:

• a variable speed engine that provides motive power at a plurality of run speeds greater than an idle speed;
• a variable frequency generator that is connected to receive the motive power, and that provides a generator output;
• a welding-type output power circuit disposed to receive power from a bus and provide a welding-type output power;
• an auxiliary power circuit, disposed to receive power from the bus and to provide an auxiliary output power;
• an energy storage device;
• a bidirectional charger/discharger connected between the bus and the energy storage device;
• and
• a controller comprising circuitry configured to:
• receive welding feedback indicative of the welding-type output power,
• receive auxiliary feedback indicative of the auxiliary output power, and
• receive engine feedback, the controller comprising:
• a welding control output connected to the welding-type output power circuit;
• an auxiliary control output connected to the auxiliary power circuit;
• an engine control output connected to the engine;
• wherein the controller is configured to control the welding-type output power, the auxiliary output power, and the engine speed based on the welding feedback, the auxiliary feedback, or the engine feedback, to avoid overloading the engine.

A welding-type power supply, comprising:

• a variable speed engine that provides motive power at a plurality of run speeds greater than an idle speed;
• a variable frequency generator that is connected to receive the motive power, and that provides a generator output;
• a preregulator connected to the generator output, and connected to provide an intermediate signal to a bus;
• a welding-type output power circuit disposed to receive power from the bus and provide a welding-type output power;
• an auxiliary power circuit, disposed to receive power from the bus and to provide an auxiliary output power;
• and
• a controller comprising circuitry configured to:
• receive welding feedback indicative of the welding-type output power,
• receive auxiliary feedback indicative of the auxiliary output power, and
• receive engine feedback, the controller comprising:
• a welding control output connected to the welding-type output power circuit;
• an auxiliary control output connected to the auxiliary power circuit;
• an engine control output connected to the engine;
• a preregulator control output connected to the preregulator;
• wherein the controller is configured to control the welding-type output power, the auxiliary output power, the preregulator output power, and the engine speed based on the welding feedback, the auxiliary feedback, or the engine feedback, to avoid overloading the engine,
• wherein the controller calls for an increased engine speed when at least one of a welding process and an auxiliary process is initiated.

A welding-type power supply, comprising:

• a variable speed engine that provides motive power at a plurality of run speeds greater than an idle speed;
• a variable frequency generator that is connected to receive the motive power, and that provides a generator output;
• a preregulator connected to the generator output, and connected to provide an intermediate signal to a bus;
• a welding-type output power circuit disposed to receive power from the bus and provide a welding-type output power;
• an auxiliary power circuit, disposed to receive power from the bus and to provide an auxiliary output power;
• an energy storage device;
• a bidirectional charger/discharger connected between the bus and the energy storage device;
• and
• a controller comprising circuitry configured to:
• receive welding feedback indicative of the welding-type output power,
• receive auxiliary feedback indicative of the auxiliary output power, and
• receive engine feedback, the controller comprising:
• a welding control output connected to the welding-type output power circuit;
• an auxiliary control output connected to the auxiliary power circuit;
• an engine control output connected to the engine;
• a preregulator control output connected to the preregulator;
• wherein the controller is configured to control the welding-type output power, the auxiliary output power, the preregulator output power, and the engine speed based on the welding feedback, the auxiliary feedback, or the engine feedback, to avoid overloading the engine.