Patents by Inventor Andrzej Mnich
Andrzej Mnich has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11742766Abstract: An apparatus to provide welding power. The apparatus may include a direct current-alternate current (DC-AC) power converter to output a primary current and a transformer stage. The transformer stage may include at least one power transformer to receive the primary current from the (DC-AC) power converter on a primary side of the transformer stage and to output a first voltage through a first rectifier and a first set of secondary windings disposed on a secondary side of the transformer stage. The transformer stage may further include an auxiliary set of secondary windings disposed on the secondary side to output a second voltage. The apparatus may also include a pair of active unidirectional switches disposed on the secondary side to receive the second voltage from the auxiliary set of secondary windings.Type: GrantFiled: March 8, 2021Date of Patent: August 29, 2023Assignee: ESAB ABInventor: Andrzej Mnich
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Patent number: 11638966Abstract: A system for controlling a weld-current in an arc welding apparatus for short arc welding comprising a current regulator included in a voltage feedback loop from a power supply to a welding electrode and a ramp generator arranged to provide current ramps during a short circuit phase at said welding electrode.Type: GrantFiled: November 27, 2018Date of Patent: May 2, 2023Assignee: ESAB ABInventor: Andrzej Mnich
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Patent number: 11394304Abstract: A power supply may include a power block to receive an input power and generate an output power; and a control system coupled to the power block, wherein the power block and control system are arranged to provide unidirectional current flow and bipolar voltage during operation of the power supply.Type: GrantFiled: February 19, 2020Date of Patent: July 19, 2022Assignee: ESAB ABInventor: Andrzej Mnich
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Patent number: 11273512Abstract: An ignition device for welding equipment includes a capacitor, a transformer, a high voltage output circuit connected to a secondary winding of the transformer, a discharging switch enabling discharge of the capacitor to a primary winding of the transformer, a charger and an operation control circuit that controls the charger and the discharging switch.Type: GrantFiled: June 22, 2017Date of Patent: March 15, 2022Assignee: ESAB ABInventor: Andrzej Mnich
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Publication number: 20210305902Abstract: An apparatus to provide welding power. The apparatus may include a direct current-alternate current (DC-AC) power converter to output a primary current and a transformer stage. The transformer stage may include at least one power transformer to receive the primary current from the (DC-AC) power converter on a primary side of the transformer stage and to output a first voltage through a first rectifier and a first set of secondary windings disposed on a secondary side of the transformer stage. The transformer stage may further include an auxiliary set of secondary windings disposed on the secondary side to output a second voltage. The apparatus may also include a pair of active unidirectional switches disposed on the secondary side to receive the second voltage from the auxiliary set of secondary windings.Type: ApplicationFiled: March 8, 2021Publication date: September 30, 2021Inventor: Andrzej MNICH
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Patent number: 11033978Abstract: A method for determining a value of arc voltage in a welding system, the welding system including a switch mode power supply and a controller that controls operation of the switch mode power supply, the method including, during an active power delivery stage of the switch mode power supply sensing a first internal voltage (V20) within the switch mode power supply prior to an internal inductor and a first output voltage (V21) of the switch mode power supply; during a freewheeling stage of the switch mode power supply sensing a second internal voltage (VF) within the switch mode power supply prior to the internal inductor and a second output voltage (V22) of the switch mode power supply; and determining the value of arc voltage based on the first internal voltage, the first output voltage, the second internal voltage, and the second output voltage.Type: GrantFiled: February 28, 2018Date of Patent: June 15, 2021Assignee: ESAB ABInventor: Andrzej Mnich
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Patent number: 10944328Abstract: An apparatus to provide welding power. The apparatus may include a direct current-alternate current (DC-AC) power converter to output a primary current and a transformer stage. The transformer stage may include at least one power transformer to receive the primary current from the (DC-AC) power converter on a primary side of the transformer stage and to output a first voltage through a first rectifier and a first set of secondary windings disposed on a secondary side of the transformer stage. The transformer stage may further include an auxiliary set of secondary windings disposed on the secondary side to output a second voltage. The apparatus may also include a pair of active unidirectional switches disposed on the secondary side to receive the second voltage from the auxiliary set of secondary windings.Type: GrantFiled: May 29, 2018Date of Patent: March 9, 2021Assignee: ESAB ABInventor: Andrzej Mnich
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Patent number: 10910953Abstract: An apparatus to provide welding power. The apparatus may include a direct current-alternate current (DC-AC) power converter to output a primary current and a transformer stage. The transformer stage may include at least one power transformer to receive the primary current from the (DC-AC) power converter on a primary side of the transformer stage and to output a first voltage through a first rectifier and a first set of secondary windings disposed on a secondary side of the transformer stage. The transformer stage may further include an auxiliary set of secondary windings disposed on the secondary side to output a second voltage. The apparatus may also include a pair of active unidirectional switches disposed on the secondary side to receive the second voltage from the auxiliary set of secondary windings.Type: GrantFiled: May 29, 2018Date of Patent: February 2, 2021Assignee: ESAB ABInventor: Andrzej Mnich
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Publication number: 20200186045Abstract: A power supply may include a power block to receive an input power and generate an output power; and a control system coupled to the power block, wherein the power block and control system are arranged to provide unidirectional current flow and bipolar voltage during operation of the power supply.Type: ApplicationFiled: February 19, 2020Publication date: June 11, 2020Inventor: Andrzej MNICH
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Patent number: 10637362Abstract: A power supply may include a power block to receive an input power and generate an output power; and a control system coupled to the power block, wherein the power block and control system are arranged to provide unidirectional current flow and bipolar voltage during operation of the power supply.Type: GrantFiled: February 25, 2019Date of Patent: April 28, 2020Assignee: ESAB ABInventor: Andrzej Mnich
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Patent number: 10608554Abstract: A power supply, including a primary pre-converter, coupled to supplying mains, configured to receive an AC voltage at low frequency and output a high DC voltage, and further configured to receive the high DC voltage and to output the alternating current; a primary converter, disposed on a primary side of the power supply, coupled to the high DC voltage from the primary pre-converter; an isolating transformer to receive the high frequency AC voltage and output a high frequency secondary AC voltage, and to receive a high frequency secondary AC current and to output primary high frequency AC current; and an output converter, on a secondary side of the power supply, wherein the output converter is configured to receive high frequency AC voltage from the isolating transformer and to output a DC voltage of a first or second polarity to an output, and wherein the output converter is configured to receive DC current of a first or second direction from the output and to output a high frequency AC current to the isolatType: GrantFiled: March 4, 2019Date of Patent: March 31, 2020Assignee: ESAB ABInventor: Andrzej Mnich
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Publication number: 20190262929Abstract: A method for determining a value of arc voltage in a welding system, the welding system including a switch mode power supply and a controller that controls operation of the switch mode power supply, the method including, during an active power delivery stage of the switch mode power supply sensing a first internal voltage (V20) within the switch mode power supply prior to an internal inductor and a first output voltage (V21) of the switch mode power supply; during a freewheeling stage of the switch mode power supply sensing a second internal voltage (VF) within the switch mode power supply prior to the internal inductor and a second output voltage (V22) of the switch mode power supply; and determining the value of arc voltage based on the first internal voltage, the first output voltage, the second internal voltage, and the second output voltage.Type: ApplicationFiled: February 28, 2018Publication date: August 29, 2019Inventor: Andrzej MNICH
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Publication number: 20190207524Abstract: A power supply may include a power block to receive an input power and generate an output power; and a control system coupled to the power block, wherein the power block and control system are arranged to provide unidirectional current flow and bipolar voltage during operation of the power supply.Type: ApplicationFiled: February 25, 2019Publication date: July 4, 2019Inventor: Andrzej MNICH
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Publication number: 20190199236Abstract: A power supply, including a primary pre-converter, coupled to supplying mains, configured to receive an AC voltage at low frequency and output a high DC voltage, and further configured to receive the high DC voltage and to output the alternating current; a primary converter, disposed on a primary side of the power supply, coupled to the high DC voltage from the primary pre-converter; an isolating transformer to receive the high frequency AC voltage and output a high frequency secondary AC voltage, and to receive a high frequency secondary AC current and to output primary high frequency AC current; and an output converter, on a secondary side of the power supply, wherein the output converter is configured to receive high frequency AC voltage from the isolating transformer and to output a DC voltage of a first or second polarity to an output, and wherein the output converter is configured to receive DC current of a first or second direction from the output and to output a high frequency AC current to the isolatType: ApplicationFiled: March 4, 2019Publication date: June 27, 2019Inventor: Andrzej Mnich
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Patent number: 10284110Abstract: A power supply, including a primary pre-converter, coupled to supplying mains, configured to receive an AC voltage at low frequency and output a high DC voltage, and further configured to receive the high DC voltage and to output the alternating current; a primary converter, disposed on a primary side of the power supply, coupled to the high DC voltage from the primary pre-converter; an isolating transformer to receive the high frequency AC voltage and output a high frequency secondary AC voltage, and to receive a high frequency secondary AC current and to output primary high frequency AC current; and an output converter, on a secondary side of the power supply, wherein the output converter is configured to receive high frequency AC voltage from the isolating transformer and to output a DC voltage of a first or second polarity to an output, and wherein the output converter is configured to receive DC current of a first or second direction from the output and to output a high frequency AC current to the isolatType: GrantFiled: June 19, 2017Date of Patent: May 7, 2019Assignee: ESAB ABInventor: Andrzej Mnich
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Publication number: 20190091790Abstract: A system for controlling a weld-current in an arc welding apparatus for short arc welding comprising a current regulator included in a voltage feedback loop from a power supply to a welding electrode and a ramp generator arranged to provide current ramps during a short circuit phase at said welding electrode.Type: ApplicationFiled: November 27, 2018Publication date: March 28, 2019Inventor: Andrzej MNICH
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Patent number: 10195681Abstract: A system for controlling a weld-current in an arc welding apparatus for short arc welding comprising a current regulator included in a voltage feedback loop from a power supply to a welding electrode and a ramp generator arranged to provide current ramps during a short circuit phase at said welding electrode.Type: GrantFiled: June 26, 2018Date of Patent: February 5, 2019Assignee: ESAB ABInventor: Andrzej Mnich
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Patent number: 10189107Abstract: A system for controlling a weld-current in an arc welding apparatus for short arc welding comprising a current regulator included in a voltage feedback loop from a power supply to a welding electrode and a ramp generator arranged to provide current ramps during a short circuit phase at said welding electrode.Type: GrantFiled: May 28, 2010Date of Patent: January 29, 2019Assignee: ESAB ABInventor: Andrzej Mnich
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Publication number: 20180367060Abstract: A power supply, including a primary pre-converter, coupled to supplying mains, configured to receive an AC voltage at low frequency and output a high DC voltage, and further configured to receive the high DC voltage and to output the alternating current; a primary converter, disposed on a primary side of the power supply, coupled to the high DC voltage from the primary pre-converter; an isolating transformer to receive the high frequency AC voltage and output a high frequency secondary AC voltage, and to receive a high frequency secondary AC current and to output primary high frequency AC current; and an output converter, on a secondary side of the power supply, wherein the output converter is configured to receive high frequency AC voltage from the isolating transformer and to output a DC voltage of a first or second polarity to an output, and wherein the output converter is configured to receive DC current of a first or second direction from the output and to output a high frequency AC current to the isolatType: ApplicationFiled: June 19, 2017Publication date: December 20, 2018Inventor: Andrzej Mnich
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Publication number: 20180367050Abstract: An apparatus to provide welding power. The apparatus may include a direct current-alternate current (DC-AC) power converter to output a primary current and a transformer stage. The transformer stage may include at least one power transformer to receive the primary current from the (DC-AC) power converter on a primary side of the transformer stage and to output a first voltage through a first rectifier and a first set of secondary windings disposed on a secondary side of the transformer stage. The transformer stage may further include an auxiliary set of secondary windings disposed on the secondary side to output a second voltage. The apparatus may also include a pair of active unidirectional switches disposed on the secondary side to receive the second voltage from the auxiliary set of secondary windings.Type: ApplicationFiled: May 29, 2018Publication date: December 20, 2018Inventor: Andrzej MNICH