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Fronius International Gmbh patents


Recent patent applications related to Fronius International Gmbh. Fronius International Gmbh is listed as an Agent/Assignee. Note: Fronius International Gmbh may have other listings under different names/spellings. We're not affiliated with Fronius International Gmbh, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "F" | Fronius International Gmbh-related inventors


Device having monitored device cooling

Device (1) for the provision of electric power, wherein the device (1) comprises: at least one integrated temperature sensor (3-1, 3-2) which detects an operating temperature progression of at least one component (2-1, 2-2) of the device (1) and a monitoring unit (5) which, on the basis of the at least one detected operating temperature progression and the adjusted power, monitors the operating state of a device cooling arrangement of the device (1).. . ... Fronius International Gmbh

Inverter for converting a dc voltage into an ac voltage

The invention relates to an inverter (1) for converting a dc voltage (udc) into an ac voltage (uac), in particular a photovoltaic inverter for high power densities, in particular power densities of 250 w/dm3 to 500 w/dm3, having at least one dc input (5), an ac output (11), a heat sink (20), a printed circuit board (32), a dc disconnector (7), a dc-dc converter (8), an intermediate circuit (9), a dc-ac converter (10) and a housing (14) with a front cover (15) and a basic shell (16). In order to achieve a simple and compact structure of the inverter (1), the electrical components (33) of the dc-dc converter (8), intermediate circuit (9) and dc-ac converter (10) are combined into subassemblies (31), and at least the dc disconnector (7) and the subassemblies (31) of the dc-dc converter (8), intermediate circuit (9) and dc-ac converter (10) are directly arranged on the printed circuit board (32) in a u-shaped manner corresponding to the energy flow direction (34) from the dc input (5) to the ac output (11), and the printed circuit board (32) is arranged with the component side (66) facing in the direction of the base (65) of the basic shell (16) of the housing (14) and with the side opposite the component side (66) on the heat sink (20).. ... Fronius International Gmbh

Method for testing the strings of solar modules of a photovoltaic system, and photovoltaic inverter for carrying out the method

The invention relates to a method for testing the strings (3) of a photovoltaic system, and also to a photovoltaic inverter (1) for carrying out this method. According to the invention, each relay (14), each current-measuring device (15) and the voltage-measuring device (16) are connected to the control device (7) and said control device is designed to control each relay (14), each current-measuring device (15) and the voltage-measuring device (16) in such a way as to automatically ascertain at least individual values of the u/i characteristic curve of each string (3), and said control device is connected to at least one interface (17) for connection to sensors for measuring environmental parameters in the region of the string (3) and is connected to a memory (10) for storing the ascertained values for creating a test report, wherein the control device (7) is further designed to convert the ascertained values optionally to standard test conditions under defined environmental conditions and to compare said ascertained values with values which are stored in the memory (10).. ... Fronius International Gmbh

Circuit arrangement for controlling a transistor

A circuit arrangement for controlling a transistor with an insulated gate, a gate driver for generating a driver signal, and a capacitor parallel to the gate-source path of the transistor, wherein the gate driver is designed for generating a driver signal greater than or equal to zero volts, an inductor is provided for forming a resonant circuit with the capacitor, and a switching element is provided in the resonant circuit, which is designed for interrupting the resonant circuit after recharging the capacitor. The part of the circuit arrangement downstream of the gate driver is designed for exclusive voltage supply using the driver signal of the gate driver, and the switching element is formed by an additional transistor, a first freewheeling diode is arranged parallel to the switching element, and the inductor of the resonant circuit is arranged between the additional transistor and the gate of the transistor.. ... Fronius International Gmbh

Power supply unit for a resistance welding apparatus

A power supply unit for a resistance welding apparatus, said power supply unit comprising a converter circuit adapted to convert an alternating power supply current, ac, applied via a residual current protection circuit to an input of said converter circuit into a pulsed electrical current supplied from an output of said converter circuit to a primary coil of a transformer of said resistance welding apparatus, and at least one switching element provided between the output of said converter circuit and protective earth.. . ... Fronius International Gmbh

Welding device with a laser preheater for filler wire

The invention relates to a welding device (1) having a welding torch (2), a feeder (3) for feeding a melting filler material (4) at a feed rate (v) to a weld (s), where the filler material (4) is melted with the aid of an electric arc (l), and a pre-heater (9) for heating the filler material (4) upstream of the weld (s) by means of a laser beam (7) having a laser power (p) and generated in a laser device (6). For space-saving and safe heating of the filler material (4) upstream of the weld (s), the pre-heater (9) includes a feed channel (5) for the filler material (4), and at least one deflector (8) is attached to the pre-heater (9) for deflecting the laser beam (7) to the filler material (4) in such a way that the laser beam (7) strikes the filler material (4) inside the feed channel (5) of the pre-heater (9).. ... Fronius International Gmbh

Resonant converter having a transformer with central point tap

In order to set the output voltage of a resonant converter to a desired value by means of a simple additional circuit while the resonant converter is in open circuit operation, it is intended that at least one capacitor each (c1, c2) is connected in parallel to the electrical switching elements (s1, s2) of the secondary side of the resonant converter (1).. . ... Fronius International Gmbh

Power transmission system

Power transmission system (1) for power transmission of electric power (p) from a power source (2a) to a power sink (4a) which is connected to the power source (2a) via a power transfer cable (3), wherein the power source (2a) has a first pole with a first electric potential, which is connected via parallel current lines of a first conducting pair of the power transfer cable (3) to a first pole of the power sink (4a), and a second pole with a second electric potential, which is connected via further parallel current lines of a second conducting pair of the power transfer cable (3) to a second pole of the power sink (4a), wherein, during the power transmission via the current lines, a user data signal can be transmitted between the power source (2a) and the power sink (4a) via at least one conducting pair with current lines of the same electric potential, uninfluenced by the power transmission.. . ... Fronius International Gmbh

Welding wire cartridge with moisture protection

In order to reduce the accumulation of moisture on a welding wire (2, 2′, 2″) arranged in a welding wire cartridge (1, 1a, 1b) or to remove existing moisture in a simple and reliable manner, it is provided that a flow (d1) of purging air supplied to the welding wire cartridge (1, 1a, 1b) is adjusted by a flow control unit (14), the purging air is supplied to the flow control unit (14) at a first pressure (p) and is discharged at a purging air discharge (24) of the welding wire cartridge (1, 1a, 1b) at a third pressure (pat), and at a purging air feed (15) of the welding wire cartridge (1, 1a, 1b) a second pressure (p1) at the purging air feed (15) that is lower than the first pressure (p) results from the adjusted flow (d1), the third flow (pat) and a flow resistance between the purging air feed (15) and the purging air discharge (24), the relative humidity (rf1) of the purging air being reduced by the relief of pressure from the first pressure (p) to the second pressure (p1).. . ... Fronius International Gmbh








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