Abstract: Systems and methods to provide welding-type arc starting and stabilization with reduced open circuit voltage are disclosed. An example welding-type power supply includes: power conversion circuitry configured to convert input power to welding-type power; and control circuitry configured to: control the power conversion circuitry to output a voltage pulse at a first voltage; determine whether the power conversion circuitry outputs current during the voltage pulse; in response to determining that there is less than a threshold output current during the voltage pulse, control the power conversion circuitry to turn off an output or output a second voltage that is less than the first voltage; and in response to determining that the power conversion circuitry outputs at least the threshold output current during the voltage pulse, control the power conversion circuitry to output the welding-type power.

Abstract: An example welding-type power supply includes: power conversion circuitry configured to convert input power to welding-type power, and to output the welding-type power via a welding-type circuit; a temperature sensor configured to measure a temperature of at least one component of the welding-type power supply; and stray current detection circuitry configured to detect stray welding-type current based on the measured temperature of the at least one component.

Abstract: An example engine-driven power system includes: an engine; a generator configured to convert mechanical engine power to electrical power; first and second power subsystems configured to convert the mechanical or electrical power to first and second power outputs, wherein the first and second power subsystems are configurable to output the first and second power outputs simultaneously; an input device configured to control a load management priority, wherein the load management priority comprises at least one of an adjustable ranking, an adjustable balance, or bus voltage thresholds; and control circuitry configured to: control the first and second power subsystems to output the first and second power outputs based on first and second demands; and, in response to determining that a total demand exceeds a capacity, control the first or second power subsystems to reduce the power outputs or the demands based on the load management priority.

Abstract: Systems and methods to provide welding-type arc starting and stabilization with reduced open circuit voltage are disclosed. An example welding-type power supply includes: power conversion circuitry configured to convert input power to welding-type power; and control circuitry configured to: control the power conversion circuitry to output a voltage pulse at a first voltage; determine whether the power conversion circuitry outputs current during the voltage pulse; in response to determining that there is less than a threshold output current during the voltage pulse, control the power conversion circuitry to turn off an output or output a second voltage that is less than the first voltage; and in response to determining that the power conversion circuitry outputs at least the threshold output current during the voltage pulse, control the power conversion circuitry to output the welding-type power.

Abstract: A method and apparatus for providing engine driven welding-type power supply includes an engine, a generator, an input power circuit, a welding-type power circuit, an auxiliary power circuit and a controller. The generator includes permanent magnets that create and provides a generator output from at least one polyphase winding. The input power circuit is connected to the generator output and the welding-type power circuit is connected to the input circuit, and provides a welding-type output. The auxiliary power circuit is connected to the input circuit and provides an auxiliary power output. The controller is connected to the auxiliary power and the welding type power circuits, and can command that there be no load for the generator. The generator is connected to the engine and connected to function as a flywheel to the engine and the engine does not include a flywheel other than the generator.

Abstract: An example welding-type power supply includes: power conversion circuitry configured to convert input power to welding-type power, and to output the welding-type power via a welding-type circuit; a temperature sensor configured to measure a temperature of at least one component of the welding-type power supply; and stray current detection circuitry configured to detect stray welding-type current based on the measured temperature of the at least one component.

Abstract: A method and apparatus for providing engine driven welding-type power supply includes an engine, a generator, an input power circuit, a welding-type power circuit, an auxiliary power circuit and a controller. The generator includes permanent magnets that create and provides a generator output from at least one polyphase winding. The input power circuit is connected to the generator output and the welding-type power circuit is connected to the input circuit, and provides a welding-type output. The auxiliary power circuit is connected to the input circuit and provides an auxiliary power output. The controller is connected to the auxiliary power and the welding type power circuits, and can command that there be no load for the generator. The generator is connected to the engine and connected to function as a flywheel to the engine and the engine does not include a flywheel other than the generator.

Abstract: A method and apparatus for providing engine driven welding-type power supply includes an engine, a generator, an input power circuit, a welding-type power circuit, an auxiliary power circuit and a controller. The generator includes permanent magnets that create and provides a generator output from at least one polyphase winding. The input power circuit is connected to the generator output and the welding-type power circuit is connected to the input circuit, and provides a welding-type output. The auxiliary power circuit is connected to the input circuit and provides an auxiliary power output. The controller is connected to the auxiliary power and the welding type power circuits, and can command that there be no load for the generator. The generator is connected to the engine and connected to function as a flywheel to the engine and the engine does not include a flywheel other than the generator.

Abstract: A method and apparatus for providing welding-type power and auxiliary power includes an input circuit, a welding-type output power circuit, an auxiliary power circuit, and a controller. The input circuit receives input power and provides power to a common bus. The welding-type output power circuit receives power from the common bus and provides welding-type output power. The auxiliary power circuit receives power from the common bus and provides non-isolated auxiliary output power. The controller controls the auxiliary power circuit and the welding-type output power circuit.

Abstract: A method and apparatus for providing welding-type power and auxiliary power includes an input circuit, a welding-type output power circuit, an auxiliary power circuit, and a controller. The input circuit receives input power and provides power to a common bus. The welding-type output power circuit receives power from the common bus and provides welding-type output power. The auxiliary power circuit receives power from the common bus and provides non-isolated auxiliary output power. The controller controls the auxiliary power circuit and the welding-type output power circuit.

Abstract: A method and apparatus for providing welding-type power and auxiliary power includes an input circuit, a welding-type output power circuit, an auxiliary power circuit, and a controller. The input circuit receives input power and provides power to a common bus. The welding-type output power circuit receives power from the common bus and provides welding-type output power. The auxiliary power circuit receives power from the common bus and provides non-isolated auxiliary output power. The controller controls the auxiliary power circuit and the welding-type output power circuit.

Abstract: A system and method for operating an welding-based power source includes an welding-type power source includes a power conditioner configured to receive power from a power source and condition the power to have characteristics within a predefined set of thresholds and an inverter configured to receive the conditioned power from the power conditioner and convert the conditioned power to AC power. The welding-type power source also includes a rectifier configured to convert the AC power to DC welding-type power to drive a welding-type process and a processor segregated into at least two functional modules. The processor may be a field programmable gate array (FPGA) based processor. A first functional module is configured to control the power conditioner to condition the power to have characteristics within the predefined set of thresholds and a second functional module is configured to control the inverter to convert the conditioned power to AC power.

Abstract: A method and apparatus for providing welding-type power and auxiliary power includes an input circuit, a welding-type output power circuit, an auxiliary power circuit, and a controller. The input circuit receives input power and provides power to a common bus. The welding-type output power circuit receives power from the common bus and provides welding-type output power. The auxiliary power circuit receives power from the common bus and provides non-isolated auxiliary output power. The controller controls the auxiliary power circuit and the welding-type output power circuit.

Abstract: A method and apparatus for providing welding-type power is disclosed. The apparatus includes an input circuit, a dual boost preregulator, a welding-type output power circuit, and a controller. The input circuit receives input power and provides a rectified input to the dual boost preregulator. The preregulator regulates the input and provides bus power across a positive bus and a negative bus. The welding-type output power circuit receives power from the bus and provides to welding-type output power. The controller controls the dual boost preregulator and the welding-type output power circuit.

Abstract: Enhanced power factor correction for a welding-based power supply includes a controller that tracks a rectified input voltage waveform and detects zero-crossing events therein. The controller generates an ideal sinusoidal current reference signal synchronized by expected zero-crossings in the supplied power. The reference signal is used in a current control loop within the controller to control the power electronics such that the waveform of the current drawn by the power supply matches the waveform of the input voltage. The frequency of the supplied power may be calculated using the expected zero-crossings and used to adjust the expected zero-crossings.

Abstract: A system and method for operating an inverted-based power source includes a power input configured to receive alternating current (AC) power and a rectifier configured to convert the AC power to direct current (DC) power. The inverter-based power source also includes an inverter configured to receive the DC power from the rectifier and convert the DC power to AC power and a controller configured to generate switching signals according to a pattern of offsets from a regular half period and communicate the switching signals to the inverter or rectifier control operation of the inverter or rectifier.

Abstract: A welding-type power source includes a primary inverter configured to generate a first AC power and a transformer having a primary side configured to receive the first AC power and a secondary side configured to deliver a second AC power. The welding-type power source further includes a converter configured to convert the second AC power to DC power and a half-bridge inverter configured to receive the DC power and having a first output and second output configured to deliver respective portions of an AC welding-type power to a welding output to generate a welding-type arc during a welding-type process. An inductance is connected at a first end to the first output and the second output of the half-bridge inverter and connected at a second end to the welding output.

Abstract: Enhanced power factor correction for a welding-based power supply includes a controller that tracks a rectified input voltage waveform and detects zero-crossing events therein. The controller generates an ideal sinusoidal current reference signal synchronized by expected zero-crossings in the supplied power. The reference signal is used in a current control loop within the controller to control the power electronics such that the waveform of the current drawn by the power supply matches the waveform of the input voltage. The frequency of the supplied power may be calculated using the expected zero-crossings and used to adjust the expected zero-crossings.

Abstract: A system and method for operating an welding-based power source includes an welding-type power source includes a power conditioner configured to receive power from a power source and condition the power to have characteristics within a predefined set of thresholds and an inverter configured to receive the conditioned power from the power conditioner and convert the conditioned power to AC power. The welding-type power source also includes a rectifier configured to convert the AC power to DC welding-type power to drive a welding-type process and a processor segregated into at least two functional modules. The processor may be a field programmable gate array (FPGA) based processor. A first functional module is configured to control the power conditioner to condition the power to have characteristics within the predefined set of thresholds and a second functional module is configured to control the inverter to convert the conditioned power to AC power.

Abstract: A welding-type power source includes a primary inverter configured to generate a first AC power and a transformer having a primary side configured to receive the first AC power and a secondary side configured to deliver a second AC power. The welding-type power source further includes a converter configured to convert the second AC power to DC power and a half-bridge inverter configured to receive the DC power and having a first output and second output configured to deliver respective portions of an AC welding-type power to a welding output to generate a welding-type arc during a welding-type process. An inductance is connected at a first end to the first output and the second output of the half-bridge inverter and connected at a second end to the welding output.