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公开(公告)号：US12220766B2
公开(公告)日：2025-02-11
申请号：US17277509
申请日：2019-09-18
Applicant: Fronius International GmbH
Inventor： Manfred RührnößL , Markus Schorn , Herbert Staufer
IPC: B23K26/342 , B33Y10/00 , B33Y30/00
Abstract: In order to provide an improved method for producing metal structures which allows a high level of flexibility in respect of process speed of production, material composition of the metal structure, production accuracy, and the quality of the produced metal structure, according to the invention, a second metal additive is supplied to a welding point on a metal base material, which second metal additive is fused at least by a second electric arc produced between a second electrode and the metal base material in order to produce a second weld seam at the welding point, wherein different materials are used as the first metal additive and as the second metal additive, and wherein the first metal additive and the second metal additive are supplied to the welding point sequentially in time and are fused in the region of the welding point in whichever of the first and second electric arcs is burning, in order to form the three-dimensional metal structure.
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公开(公告)号：US12214453B2
公开(公告)日：2025-02-04
申请号：US18563505
申请日：2022-05-24
Applicant: FRONIUS INTERNATIONAL GMBH
Inventor： Andreas Schuetzenberger , Andreas Leonhartsberger , Patrick Hauser , Manuel Mayer , Rick Grunwald , Wolfgang Haberler
Abstract: In a method and a carrier gas nozzle for allowing at least one fluid to flow over a welding area of a workpiece along a welding path during a welding process, the at least one fluid is flowed onto the welding area via at least one inlet and channels having openings. The openings of the channels are divided into at least two sectors, and at least one flow parameter, if need be also a property of the at least one fluid of each sector, is individually controlled, wherein at least one flow parameter of at least one fluid of at least one sector is controlled depending on the geometry of the welding path and/or depending on the geometry of the workpiece.
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公开(公告)号：US12203949B2
公开(公告)日：2025-01-21
申请号：US17923278
申请日：2021-12-21
Applicant: Fronius International GmbH
Inventor： Helmut Ennsbrunner
Abstract: In a method and device for assessing the quality of a processing operation, a workpiece with specific processing parameters is processed along a processing trajectory. The (X), wherein the processing result is measured by at least one sensor and at least one sensor signal is recorded and at least one quality parameter is determined based on at least one sensor signal and the at least one quality parameter is compared with quality parameter threshold values to assess the quality of the processing result. During the assessment of the processing operation quality, changes made to the processing parameters from target values during the processing are automatically taken into consideration, in that, instead of the quality parameter threshold values, quality parameter threshold values adapted to the changes in the processing parameters are determined, and the at least one quality parameter for assessing the quality of the processing result is compared with the adapted quality parameter threshold values.
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公开(公告)号：US12176827B2
公开(公告)日：2024-12-24
申请号：US17797274
申请日：2021-02-01
Applicant: Fronius International GmbH
Inventor： Philipp Luger , Friedrich Oberzaucher
Abstract: To allow reliable current measurement of the output current of the switching stage of an inverter, especially at switching frequencies of the semiconductor switches in the 100 kHz range, a voltage at the choke is measured and integrated over time to be representative for the leg current in the choke. The time integral is processed in a processing unit, whereas the processed time integral is used in an inverter controller for controlling the inverter. The voltage at the choke is analogously integrated over time by two serially connected integrator capacitors, whereas across each of the integrator capacitors a reset switch is provided, for alternately resetting the corresponding integrator capacitor.
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公开(公告)号：US12149118B2
公开(公告)日：2024-11-19
申请号：US18005646
申请日：2021-09-27
Applicant: Fronius International GmbH
Inventor： Hans-Peter Pimminger , Martin Heidl , Florian Guschlbauer
Abstract: A secure, reliable and simplified control mechanism for operating an inverter is provided. In particular, a mechanical switch is used for connecting a local grid with a public grid and for disconnecting the local grid from the public grid. The mechanical switch comprises an intermediate position. Each time when the switch is in this intermediate position, the inverter is immediately shut down in a fast shutdown operation.
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Patent Agency Ranking
公开(公告)号：US12132415B2
公开(公告)日：2024-10-29
申请号：US17914446
申请日：2021-03-26
Applicant: Fronius International GmbH
Inventor： Dietmar Striegl , Martin Mörtenhuber , Roland Lecher , Stefan Wieser
CPC classification number: H02M7/487 , H02M1/0043 , H02M7/537
Abstract: In order to achieve improved single-phase operation of an inverter having a first input pole and a second input pole and including at least three phase branches, each having at least one upper power switch and at least one lower power switch connected in series to the at least one upper power switch via an output pole, a switching unit is provided. The switching unit is designed to switch the inverter from multi-phase operation to single-phase operation by closing a center point connection switch in order to connect the third output pole to the DC link center point. The switching unit is further designed, in single-phase operation, to effect a control of the upper and lower power switch of the third phase branch for symmetrizing the DC link voltages at the first and second DC link capacitors.
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公开(公告)号：US12126252B2
公开(公告)日：2024-10-22
申请号：US17798456
申请日：2021-02-12
Applicant: Fronius International GmbH
Inventor： Stefan Wieser , Michael Rothböck , Roland Pieler , Harald Kreuzer
CPC classification number: H02M1/126 , G01R27/2605 , G01R31/64 , H03H7/0115
Abstract: A switching arrangement of an inverter with a filter circuit and a grid relay. For the filter circuit use is made of an equivalent circuit consisting of effective filter inductance, from filter inductance and topology of the filter circuit and effective filter capacitance, from the filter capacitance and topology of the filter circuit. The effective filter inductance and the effective filter capacitance are system parameters. To determine system parameters, a voltage pulse is applied between a first conductor output and a second conductor output when the grid relay is open; the first conductor output and the second conductor output are connected via the switching arrangement to form a closed oscillating circuit a current value of the effective filter inductance and the effective filter capacitance is determined from a current curve and/or voltage curve in the resonant circuit as system parameters for controlling the switching arrangement.
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公开(公告)号：US20240322573A1
公开(公告)日：2024-09-26
申请号：US18578940
申请日：2022-07-12
Applicant: Fronius International GmbH
Inventor： Daniel BARTEL , Richard GRASBÖCK , Harald KREUZER , Roland PIELER
IPC: H02J3/46
CPC classification number: H02J3/46
Abstract: A method which is improved relative to the prior art for controlling electrical network variables in a feed network, in which the correlation between at least one feed variable measured at an input of the feed network and at least one network variable measured at an output of the feed network is described in a model-like manner using a model of the feed network. In the event of an incorrect description of the correlation, an adaptation of the model of the feed network is carried out, a feed variable target value for the at least one feed variable is determined from a predefined network variable target value for the at least one network variable using the model of the feed network, and the at least one feed variable is set to the determined feed variable target value by a current converter.
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9.发明公开公开(公告)号：US20240305217A1
公开(公告)日：2024-09-12
申请号：US18557737
申请日：2022-05-05
Applicant: FRONIUS INTERNATIONAL GMBH
Inventor： Mohsen Rezaei , Maria Crespo Cordo
IPC: H02M7/5387 , H02J3/18 , H02M1/00 , H02M1/32
CPC classification number: H02M7/53871 , H02J3/18 , H02M1/0009 , H02M1/0016 , H02M1/327
Abstract: A method for improving an operational behavior of an inverter (1), said method comprising the steps of calculating (S1) a capacitance, C, of an AC capacitor of said inverter (1) for each electrical power supply phase (L) of the inverter (1) on the basis of a measured voltage signal and a measured current signal for the respective electrical power supply phase (L) during a startup of said inverter (1) when the inverter (1) is separated by a grid relay (8) from a public or stand-alone power supply grid (9) or backup system; and compensating (S10) automatically an observed change of the capacitance, C, of the AC capacitor over time by adjusting the AC current generated by the inverter (1) for the respective electrical power supply phase (L) to optimize a reactive current injection.
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公开(公告)号：US12085615B2
公开(公告)日：2024-09-10
申请号：US17278960
申请日：2019-09-24
Applicant: Fronius International GmbH
Inventor： Joachim Danmayr , Christian Kasberger
IPC: G01R31/327 , G01R19/165 , G01R31/42
CPC classification number: G01R31/3275 , G01R19/16547 , G01R31/42
Abstract: In order to be able to perform a shutdown test on an inverter with little expenditure, a trigger signal is modulated to the AC current or the AC voltage at a first moment, and the inverter is used at a second moment, which occurs a defined duration after the start of the trigger signal at the first moment, to generate an AC current or an AC voltage with a fault signal that is detected by the inverter and which triggers a shutdown of the inverter, and the shutdown moment of the AC current or the AC voltage is determined. A shutdown duration of the inverter is determined from the difference between the shutdown moment and the second moment.
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