A welding machine includes a welding power supply that generates a welding waveform during a welding operation, an internal combustion engine, and a generator that is operatively connected to the welding power supply to supply electrical energy to the welding power supply. The generator includes a rotor shaft driven by the internal combustion engine, and an end casting located at an end of the generator opposite the internal combustion engine. A rotary screw compressor is mounted to the end casting of the generator. A clutch mechanism couples the rotor shaft to the rotary screw compressor to selectively drive the rotary screw compressor by the rotor shaft.

Apparatus and methods are provided for a welding-type power system that includes an engine configured to drive an electric generator to provide a first power output. An energy storage device to provide a second power output. A controller is configured to receive one or more control signals to provide a total power output to at least one of a welding-type output or an auxiliary type output, determine proportional values for the first power output and the second power output that add up to the total power output based on a power demand signal that indicates a contribution of the first power output and the second power output, control the engine to adjust speed based on the first power output value, and control a connection from the energy storage device to provide the second power output to the welding-type output based on the second power output value.

Systems and methods for setting welding parameters are provided. For example, in certain embodiments, a method includes receiving an input relating to a change in a parameter of welding power of a welding system via a welding system interface. The method also includes displaying a graphical representation of an acceptable range of values for the parameter of the welding power on a display device of the welding system interface, wherein the acceptable range of values is based on other parameters of a welding process being performed by the welding system. The method further includes constraining subsequent manual inputs relating to changes in the parameter of the welding power to the acceptable range of values.

A welding-type power supply includes a fan configured to operate at multiple fan speeds. A controller of the welding-type power supply is configured to identify a welding parameter of the welding-type power supply, and determine an operating fan speed of the multiple fan speeds based on the welding parameter.

A welding-type power supply includes a fan configured to operate at multiple fan speeds. A controller of the welding-type power supply is configured to identify a welding parameter of the welding-type power supply, and determine an operating fan speed of the multiple fan speeds based on the welding parameter.

A solar-powered portable housing for a tool is also disclosed herein. The solar-powered portable housing for a tool can comprise a battery, one or more solar panels, a plug, a top enclosure, a bottom enclosure, a first slideable wall, and a first solar panel. The solar panels can be connectable to the battery. The solar panels can provide power source to the battery. The plug can allow the battery be charged through an electric power source. The top enclosure can be capable of housing a tool. The bottom enclosure can be capable of housing the battery. The battery can be capable of providing power to the tool. The first slideable wall can be mounted to one side of the housing. The first solar panel can be mounted to the first slideable wall.

A robotic electric arc welding system includes a welding torch, a welding robot configured to manipulate the welding torch during a welding operation, a robot controller operatively connected to the welding robot to control weaving movements of the welding torch along a weld seam and at a weave frequency and weave period, and a welding power supply operatively connected to the welding torch to control a welding waveform, and operatively connected to the robot controller for communication therewith. The welding power supply is configured to sample a plurality of weld parameters during a sampling period of the welding operation and form an analysis packet, and process the analysis packet to generate a weld quality score, wherein the welding power supply obtains the weave frequency or the weave period and automatically adjusts the sampling period for forming the analysis packet based on the weave frequency or the weave period.

An arc welder includes a welding power supply, a forward/reverse welding wire feeder, and a controller for the power supply and the wire feeder. Welding is implemented by repeating unit welding steps each including a short circuit stage with the welding wire and a base material being short-circuited and an arc stage with an arc being generated between the wire and the material. A transition period continues from a starting point of the arc stage till the wire feeding rate reaches a forward maximum. An average welding current is defined as an average of the welding current during the short circuit and arc stages. Within the transition period, the controller sets a current suppression period during which welding current is smaller than the average welding current. Transition period length T0 and current suppression period length T1 are set to satisfy the inequality 0<T1/T0≤0.8.

Methods and apparatus to determine heat input to a weld are disclosed. An example welding-type power supply includes a power converter to convert input power to output welding-type power, and a controller configured to: during a welding-type operation, calculate average instantaneous power values of the welding-type operation for discrete, non-overlapping time periods by multiplying voltage measurements and corresponding current measurements; identify an end of the welding-type operation; determine a duration of the welding-type operation; calculate a total average instantaneous power of the welding-type operation based on the average instantaneous power values for the time periods and the duration of the welding-type operation; and determine whether an acceptable range of the welding-type operation is exceeded based on the total average instantaneous power and the duration of the welding-type operation.

Power systems and methods of controlling an engine driven air compressor include an air compressor driven by an engine via a clutch. A first pressure sensor configured to sense a pressure level at an outlet of the air compressor. An inlet valve configured to close in response to the first pressure sensor sensing a pressure level above a first pressure level. In addition, a second pressure sensor to sense a pressure level below a second pressure level at a housing of the air compressor, wherein the clutch is configured to disengage in response to the second pressure level, wherein the first pressure level is higher than the second pressure level.