Patent application number | Description | Published |
20110204033 | WELDING SYSTEM WITH TORQUE MOTOR WIRE DRIVE - A welding system for welding with wire is disclosed that includes a torque motor in a wire feeder and a pull motor in a welding torch. A wire feed speed may be set by an operator at a power supply or on a wire feeder. Based upon calibration of the pull motor in the torch, upon startup of the welding operation, signals are provided to a pull motor and the torch in an open loop manner with respect to the speed of the pull motor, while the torque motor is driven to maintain a feed force on the welding wire to ensure that the pull motor has welding wire available for feeding. No other coordination is required between the torque motor and the pull motor. | 08-25-2011 |
20110204034 | WIRE FEED SPEED REFERENCED VARIABLE FREQUENCY PULSE WELDING SYSTEM - A pulsed waveform welding operation is implemented by reference to a commanded wire feed speed set by an operator. The wire feed speed is set on a wire feeder, and a signal representative of the commanded wire feed speed is applied to a power supply. The power supply control circuitry references a look-up table in which pulsed waveform parameters are provided based upon wire feed speed. The parameters may include multiple parameters such as pulse frequency, peak current, background current, and current ramp rates. The control circuitry commands power conversion circuitry to generate the commanded waveform as a function of the commanded wire feed speed. | 08-25-2011 |
20110240620 | WELDING SYSTEM AND METHOD UTILIZING INTERNAL ETHERNET COMMUNICATIONS - A welding system and method utilizing internal Ethernet communications is provided. One welding system includes a power supply configured to generate power for welding. The power supply includes a first processing circuit for implementing a predetermined welding regime and a first Ethernet interface coupled to the first processing circuit and configured to communicate via an Ethernet protocol. The system also includes a wire feeder coupled to the power supply to receive the power from the power supply and to provide welding wire for welding. The wire feeder includes a second processing circuit for controlling operation of the wire feeder and a second Ethernet interface coupled to the second processing circuit and configured to communicate via an Ethernet protocol. The welding power supply and the wire feeder exchange welding parameter data in accordance with the Ethernet protocol via an Ethernet media cable coupled between the Ethernet interfaces. | 10-06-2011 |
20140021179 | Method and Apparatus For Providing Welding Type Power - A method and apparatus for providing welding-type power includes receiving an input that may be either a single or a three phase input voltage. Three power modules, each having a single phase boost power circuit, and an output circuit process the input power. A weld output circuit receives and combines the outputs of the three power modules. An input power distribution module connects the three power modules such that each receives a unique single phase power signal. A controller controls the three power modules and the input power distribution module. | 01-23-2014 |
20150053660 | Method and Apparatus For Providing Welding Type Power With Flux Balancing - A welding-type power supply includes a controller, a preregulator, a preregulator bus, and an output converter. The controller has a preregulator control output and an output converter control output. The controller has a converter control output connected to the control input, and a flux balancing module. The converter control output is responsive to the flux balancing module such that the flux in the transformer remains balanced. | 02-26-2015 |
20150060426 | Method and Apparatus For Providing Welding Type Power With Balanced Bus - A welding-type power supply includes a controller, bus (that can, but need not be preregulated), and an output converter. The controller has a preregulator control output and an output converter control output. The controller may receive bus feedback indicative of a plurality of bus voltages. A bus voltage balancing module in the converter includes a scaled correction module responsive to the bus feedback signal, and the converter control output is responsive to the bus voltage balancing module. The controller may receive load feedback indicative of a load output, have a bus voltage balancing module that includes a load proportional gain module responsive to the load. | 03-05-2015 |
20160129514 | Welding Type Power Supply For TIG Starts - A method and apparatus for TIG welding and starting a TIG welding process includes limiting the pulse width of a power circuit when a TIG start is being performed, and monitoring for the creation of a welding arc. After the welding arc has been detected the limiting of the pulse width is ended. | 05-12-2016 |
20160129518 | Method and Apparatus for Air Carbon Arc Cutting - A method and apparatus for air carbon arc cutting (CAC-A) using a welding-type power supply includes selecting a CAC-A mode and providing current in a CAC-A mode at a selected current setpoint. Start and restrike algorithms can be used that are specifically for CAC-A. | 05-12-2016 |
20160129520 | Method and Apparatus for Providing Auxiliary and Welding Type Power With Thermal Protection - A method and apparatus for providing welding-type power supply includes a power circuit and a controller. The power circuit receives input power and provides welding type power and auxiliary power. It is controlled on a control input. The power circuit also includes an auxiliary power transformer. A temperature responsive component is mounted in the auxiliary power transformer and provides a temperature signal indicative of the temperature in the auxiliary power transformer. The controller controls a cooling fan for the aux power transformer and/or turns off the aux power output in response to the sensed temperature. | 05-12-2016 |