Siemens Energy Patente

Method of operating an electrolysis system (2) wherein the method comprising the step of: (S100) providing a control signal (S5) to a product valve (18b) on the oxygen-side (V) of the electrolysis system (2) to keep the product valve (18b) open in order to buffer oxygen provided by the electrolysis system (2) in a buffer tank (14b) on the oxygen-side (V) in normal operation of the electrolysis system (2).

The invention relates to pre-magnetizing a transformer (3) of an electrolyzer power supply system (2) and a corresponding method. The electrolyzer power supply system (2) comprises a transformer (3) and a converter (4), particularly a self-commutated converter, wherein the transformer (3) is adapted to convert an alternating current electrical power output (5) from an electrical grid (6) into an alternating current electrical power input (7) for the converter (4). The converter (4) is adapted to convert the alternating current electrical power input (7) from the transformer (3) into a direct current electrical power input (8) for an electrolyzer (9). For pre-magnetizing the transformer (3), the converter (4) is adapted to provide a pre-magnetization current (13) from a direct current source (10) to the transformer (3).

The invention concerns a gasket (10a; 10b) for an electrolyzer (34) cell stack (12) comprising a base plate (14) having a recess (16) configured to accommodate a part of a layer (32) of said electrolyzer (34) cell stack (12), a sealing (20) which is positioned along a wall (22) of the base plate (14) bounding said recess (16), and a mount (24) to support said part of the layer (32) of the electrolyzer (34) cell stack (12) at a predetermined position along a direction (26) transverse, preferably substantially perpendicular, to a plane of the base plate (14).

A manufacturing system and method where a fluid path is formed between a pre-heating section, a waste heat recovery section, a cooling section, a reactor section, the calcining section, and back to the pre-heating section, wherein a fluid, specifically carbon dioxide, is circulated and used within path while also capturing any generated carbon dioxide.

The invention relates to a method of controlling an electrolyzing plant (10) having plural electrolyzing cells (14) providing an electrolyzing process in response to being subjected to a DC electrolyzing power, wherein the electrolyzing plant is supplied with electric power from an electric power network (12) deploying an alternating voltage having a basic frequency, wherein an AC side (22) of an electric converter (20) is connected with the electric power network, a DC side (24) of the electric converter (20) provides the DC electrolyzing power. A synchronous machine (30) has a stator winding being connected with the electric power network, wherein a rotational speed of a rotor (28) of the synchronous machine is detected by a speed sensor (26) that provides a sensor signal (34), wherein a control device (36) receives and processes the sensor signal and controls an operation of the electric converter dependent on the processed sensor signal.

The invention relates to a method of controlling an electrolyzing plant (10) having plural electrolyzing cells (14) providing an electrolyzing process in response to being subjected to a DC electrolyzing power, wherein the electrolyzing plant is supplied with electric power from an electric power network (12) deploying an alternating voltage having a basic frequency, wherein an AC side (22) of an electric converter (20) is connected with the electric power network, a DC side (24) of the electric converter (20) provides the DC electrolyzing power. A synchronous machine (30) has a stator winding, wherein a rotational speed of a rotor (28) of the synchronous machine is detected by a speed sensor (26) that provides a sensor signal (34), wherein a control apparatus (36, 54) receives and processes the sensor signal and controls an operation of an energy adaptation device (44, 46) dependent on the processed sensor signal.

Die Erfindung betrifft ein Submodul (1) für einen modularen Multilevelumrichter, wobei das Submodul (1) eine Mehrzahl von Leistungshalbleiterschalteinheiten (13, 15), die in einer Brückenschaltung angeordnet sind, wenigstens einen Energiespeicher (7) zum Speichern elektrischer Energie, wenigstens einen parallel zur Energiespeichereinheit (7) geschalteten Dauerentladewiderstand (11), wenigstens einen mechanischen Überbrückungsschalter (31), der ausgestaltet ist, Anschlussklemmen (3, 5) des Submoduls (1) in einem geschlossenen Zustand zu überbrücken, und wenigstens eine zur Steuerung der Leistungshalbleiterschalteinheiten (13, 15) und des mechanischen Überbrückungsschalters (31) ausgestaltete Steuerungseinheit (33), aufweist. Die Erfindung betrifft zudem ein Verfahren zum schnellen Entladen eines Energiespeichers (7) eines Submoduls (1). Um den Energiespeicher (7) des Submoduls (1) in einem modularen Multilevelumrichter schnell und sicher entladen zu können, ist vorgesehen, dass die Steuerungseinheit (33) ausgestaltet ist, die Leistungshalbleiterschalteinheiten (13, 15) während des Schließens oder nach dem Schließen des mechanischen Überbrückungsschalters (31) derart anzusteuern, dass der Energiespeicher (7) über den geschlossenen mechanischen Überbrückungsschalter (31) und über wenigstens eine der Leistungshalbleiterschalteinheiten (13, 15) kurzgeschlossen ist.

An anchor monitoring system for a marine wind turbine held in an operating position by an anchor includes a sensor assembly including a subsea housing fixedly attached to the anchor and positionable at an operating location on a seabed. A tilt sensor is positioned within the subsea housing and operates to measure an angle of the anchor. In addition, a second sensor selected from one of a pressure sensor, a temperature sensor, and a vibration sensor, and a third sensor selected from one of a pressure sensor, a temperature sensor, and a vibration sensor are positioned within the subsea housing. A controller operates to detect a change in an operating condition of the anchor in response to the receipt of a measured angle from the tilt sensor, a second measured value from the second sensor, and a third measured value from the third sensor.

Die Erfindung betrifft eine Endstufe (1) für eine Dampfturbine, umfassend mehrere einen Leitschaufelkranz (2) bildende Leitschaufeln (3) sowie mehrere einen Laufschaufelkranz (4) bildende Laufschaufeln (5). Zwischen jeweils zwei benachbarten Leitschaufeln (3) ist jeweils wenigstens eine Leitrippe (6) angeordnet, die sich in Richtung von einer Leitschaufelvorderkante (7), zu einer Leitschaufelhinterkante (8), erstreckt. Darüber hinaus ist im Laufschaufelkranz (4) ein Dämpfungselement (9) vorgesehen, welches die Laufschaufeln (5) des Laufschaufelkranz (4) untereinander verbinden. Erfindungsgemäß sind die Leitrippen (6) so ausgebildet und angeordnet, dass sie das Arbeitsfluid der Dampfturbine, im Nennlastbetrieb im Wesentlichen um das Dämpfungselement (9) herumleiten.

Verfahren zur Herstellung einer Membran-Dichtungsanordnung für eine elektrochemische Zelle, entsprechendes Zellelement und Elektrolysesystem Es wird ein Verfahren zur Herstellung einer Membran-Dichtungsanordnung für eine elektrochemische Zelle, insbesondere eine Elektrolysezelle angegeben. Das Verfahren umfasst die Schritte S1, Bereitstellen einer Membran bzw. einer Membran-Elektrodeneinheit, umfassend auf die Membran aufgebrachte Elektrodenschichten, welche im Betrieb der Zelle als Anoden- bzw. Kathodenkatalysator dienen, S2, Bereitstellen einer Dichtung, wobei die Dichtung ausgelegt ist, im Betrieb der elektrochemischen Zelle einen Anodenraum bzw. einen Kathodenraum zu dichten, und S3, stoffschlüssiges Verbinden der Membran bzw. Membran-Elektrodeneinheit und der Dichtung zu einer vorgefertigten Baugruppe. Weiterhin werden eine entsprechende Membran-Dichtungsanordnung, eine diese aufweisende elektrochemische Zelle, ein Zellelement und ein entsprechendes Elektrolysesystem angegeben.

A method for operating an electrolysis system comprising an electrolyzer (7) and an on-load tap changing transformer (2) is provided. The system further comprises at least two line-commutated converters (3), preferably IGBT converters, wherein the on-load tap changing transformer (2) receives an electrical power (4) from an electrical power source (5) and provides an electrical power output (4) to the line-commutated converters (3), wherein the at least two line-commutated converters (3) are electrically connected in parallel between the on-load tap changing transformer (2) on a AC side and an electrolyzer (7) on a DC side and convert the electrical power output (4) into an electrical power input (6) for the electrolyzer (7), wherein the at least two converters (3) are connected to the same transformer AC bus, the method comprising in a ramping phase of the electrolyzer (7, 100) adjusting a voltage (U_E) of the electrical power input (6) by means of only one of the parallelly connected converters (3) to a tap changing voltage (U_tap), wherein the other parallelly connected converter is in a stand-by mode. Moreover, a related power supply, a controller, computer program and a related electrolyzer system are provided.

An additive manufacturing built simulation data structure (DS) is provided. The data structure being assembled for a finite element analysis (FEM) of mechanical properties (M, T) of an object (1) to be additively manufactured, wherein the data structure (DS) comprises a matrix pattern representing an elasticity tensor (E), wherein matrix elements of the elasticity tensor (E) comprise material properties of a Young's modulus (E), a shear modulus (G) and/or a Poisson's ratio (v) of the object (1), and a model function (f_ij) being independent from the material properties (MP), wherein the function (f_ij) considers a set of build process parameters (PP), a machine setup, a voxel volume filling (Vf) and/or a lattice type for the build simulation. Moreover, an additive manufacturing built simulation method for simulating the manufacture of the object (1), is presented, the method comprising, (i), accessing the data structure (DS), and (ii), performing the build simulation by executing a finite element algorithm (FEM) based on the entries of the data structure (DS), wherein all material properties (MP) are defined as constants in the matrix and only the elements of the model function (f_ij) are calibrated for a given material.

A backflow limiting structure (2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2i) which allows a flow of fluid in one direction (30). The backflow limiting structure (2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2i) can be arranged in a channel (1a, 1b). The channel (1a, 1b) can be part of an electrolyzer (24), fuel cell and/or storage cell. A resistance barrier (5a, 5b, 5c, 5d, 5e, 5f) of a backflow limiting structure (2a, 2b, 2c, 2d) provides an auxiliary section (10a, 10b, 10c, 10d) and a main section (9a, 9b, 9c, 9d). The backflow limiting structure (2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2i) interacts with a fluid, creating a different resistance depending on the direction of flow in the resistance barrier (5a, 5b, 5c, 5d, 5e, 5f).

The invention relates to a computer-implemented method and apparatus for analyzing an operational lifetime of a mechanical component comprising the steps of performing by data processing unit a Finite Element Method, FEM, simulation of the mechanical component to provide a data set used to train an artificial intelligence, AI, model and calculating by the trained artificial intelligence, AI, model output values for predicting a mechanical behavior of the mechanical component at a target time in response to applied input values.

The invention relates to a computer-implemented method and apparatus for analyzing an operational lifetime of a mechanical component comprising the steps of selecting (S31) a first binning for a first point cloud of a plurality of point clouds; for each bin of the first binning of the first point cloud, calculating (S32) an average temperature to form a first temperature profile; applying (S33) the first binning to a second point cloud of the plurality of point clouds; for each bin of the first binning of the second point cloud, calculating (S34) an average temperature to form a second temperature profile; determining (S35) a standard deviation and an average temperature for the first temperature profile and the second temperature profile to measure a temperature variation for the first binning; approximate (S36) the log-likelihood of the plurality of point clouds; for each bin, calculating (S37) an average and a standard deviation to form normal distributions; creating (S38) a gaussian mixture distribution and the average log-likelihood of the plurality of point clouds to measure a loss of information; and evaluating (S39) the first binning based on the measured temperature variation and the measured loss of information.

An electrolysis plant 300 with enhanced fault ride through capability comprises a transformer system 301 comprising an autotransformer 302 having a primary side connectable to an AC power grid 303 via a point of connection 304 and a secondary side with multiple taps 305, a rectifier system 306, and a set of electrolyser modules 307, 308, 309, 310, wherein the rectifier system 306 is connected to receive transformed AC power from the transformer system 301 and to provide DC power to the set of electrolyser modules 307, 308, 309, 310 and wherein an autotransformer secondary side electrical tap connection is selectively established through an on-load tap-changer OLTC 312, and wherein the OLTC 312 is configured to select one of the taps 305 and establish the corresponding electrical tap connection through a power electronic circuit.

Die Erfindung betrifft ein Submodul für einen modularen Mehrstufenumrichter, aufweisend einen ersten und zweiten Modulanschluss zur Einbindung des Submoduls in den modularen Mehrstufenumrichter, eine erste Serienschaltung mit zwei in Serie geschalteten Energiespeichern, deren Verbindungspunkt den ersten Modulanschluss bildet, eine zweite Serienschaltung mit einer ersten und zweiten in Serie zueinander geschalteten Schalteinrichtung, deren Verbindungspunkt den zweiten Modulanschluss bildet, wobei die erste und zweite Serienschaltung parallel geschaltet sind und zwischen dem ersten und zweiten Modulanschluss eine bidirektionale Schalteinrichtung angeordnet ist.

A method of operating a power supply system (1) for a multi-stack electrolyzer system (2) is presented, the power supply (1) comprising a transformer unit (3) operable to transform an alternating current electrical power (AC) and a rectifier system (4) operable to convert the alternating current electrical power (AC) to a direct current electrical power (DC), wherein at least two thyristor-type rectifier units (5) are connected in parallel between the transformer unit (3) on the AC side and an electrolysis array (110) on the DC side of the rectifier (4), and wherein the two rectifier units (5) are connected to different electrolyser stacks (6a, 6b), wherein the method comprises controlling the voltage of the rectifier units (5), wherein a reference DC voltage is provided to a control unit (7), wherein the control unit (7) controls the DC voltage (V_dc) to a common reference value (V_{dc ref}) by providing a corresponding firing angle (α_ref). Moreover, a related controller, power supply and the multi-stack electrolyzer system, are provided.

The invention is about an electrolysis system (01) for the electrolysis of CO2 comprising. For the electrolysis process a plurality of electrolysis cells (02) is required. An electrolyte reservoir (04) with connection to the electrolysis cells (02) and a cleaning system (06) is provided. To enlarge the operational time for the electrolysis system (01) it is foreseen that an electrolyte can pass through the cleaning system (06) during operation of the electrolysis system (01), wherein the cleaning system (06) comprises a formate reduction module (21). Here, a first separation column (22) and a second separation column (23) are arranged fluidly in parallel, which enables an alternating flow. The separation columns (22, 23) have a resin filling to enable a reduction of formate.

A gas-liquid separator (3, 10, 11, 12, 13, 14) for gas-liquid separation in an electrolysis system is presented, wherein an evolving gas (H<2>, O<2>) can be separated from a two-phase flow (2). The separator comprises a buffer tank (8) comprising a gas outlet (8a) and a liquid outlet (8b), wherein the buffer tank (8) is suitable for retaining a defined volume of gas (4) and liquid (5), and a cyclone arrangement (6, 7) which is set up to fluidically communicate with the buffer tank (8), wherein the cyclone (6, 7) comprises an inlet (2, 60) for receiving the two-phase flow (2), which is to be phase-separated during the electrolysis, and a gas outlet (4) being arranged apart from an additional liquid outlet (5, 70) of the cyclone. Furthermore, an electrolysis system (30) comprising the gas-liquid separator is provided.

Die Erfindung betrifft eine Umlenkgehäuseanordnung (1) für eine Dampfturbinenanordnung (2), wobei die Dampfturbinenanordnung (2) wenigstens eine Kondensationsturbine (3) sowie wenigstens einen wassergekühlten Kondensator (4) und wenigstens einen luftgekühlten Kondensator (5) umfasst. Die Umlenkgehäuseanordnung (1) umfasst ein Umlenkgehäuse (6), wobei das Umlenkgehäuse (6) wenigstens einen, zur Turbinenachse (7) axialen Durchlass (8) aufweist, durch den Dampf von der Kondensationsturbine (3) zum luftgekühlten Kondensator (5) strömen kann und wenigstens einen, zur Turbinenachse (7) radialen Durchlass (9), durch den Dampf von der Kondensationsturbine (3) zum wassergekühlten Kondensator (4) strömen kann. Des Weiteren umfasst die Umlenkgehäuseanordnung (1) wenigstens ein Absperrorgan (10), welches eine vakuumdichte Abdichtung des axialen Durchlasses (8) ermöglicht. Darüber hinaus betrifft die Erfindung eine Dampfturbinenanordnung (2) mit einer solchen Umlenkgehäuseanordnung (1).

Die Erfindung betrifft ein Gleitlagersegment (1<I>) für ein Gleitlager, das eine Kunststoffplatte aufweist, sowie Verstärkungselemente (10, 13) oder Stützungselemente.

The invention relates to a method for controlling an electrolyzing plant (10) having at least two electrolyzing devices (14, 16, 32, 38), wherein the electrolyzing plant is supplied with electric energy from an electric power network (12), wherein the electric power network provides an alternating voltage having a basic frequency, wherein an AC side of an electric converter (20, 22, 24, 26) is electrically connected with the electric power network, and a DC side of the electric converter provides a DC electrolyzing voltage.According to the invention, a sensed frequency of the basic frequency is compared with a predetermined frequency range (76), and, depending on comparing, an operating status of the at least two electrolyzing devices is stored if the basic frequency leaves the predetermined frequency range, in order to allow the operation of the respective one of the at least two electrolyzing devices being resumed.

The invention relates to a method of operating a supercritical CO2 power plant (1) comprising a combustor (3) and a gas turbine (4) having a turbine shaft (9) sealed against a turbine housing (11) in at least two sealing sections (10) by several shaft seals (12, 13, 14, 15), in particular non-contacting shaft seals, the method including the steps of burning a gaseous fuel with oxygen and a CO<2> working fluid in the combustor (3) and expanding the exhaust gas in the gas turbine (4), characterized in that a seal steam is fed to the gas turbine (4) to avoid that CO2 can leave the turbine housing (11) into the atmospheric environment (17) and to avoid that ambient air can enter the turbine housing (11), wherein the seal steam is water steam.

The invention relates to an unit (40) with a cell (8), wherein the components of the cell (8) comprises at least: bipolar plates (BPP, 10), a cathodic GDLK (1), a anodic GDKLA (2), a MEA (3) in between, which (1, 2, 3) are framed in a cell frame (4), wherein this cell frame (4) is located between and to be compressed by two end plates (5', 55, 55'). wherein tie rods (66) are used to compress the cell (8) between the end plates (5', 55, 55') wherein a movable block (34) is present, which faces the cell (8), wherein the movable block (34) is able to compress the components of the cell (8).

A subsea communication system includes a subsea cable positioned subsea and exposed to water at a subsea pressure and a subsea temperature. A plurality of wires is disposed within the subsea cable, with each wire of the plurality of wires including an insulation layer arranged to inhibit current leakage in response to contact with the water. The system further includes a plurality of non-intrusive current sensors, with each non-intrusive current sensor positioned subsea, coupled to a pair of the wires of the plurality of wires and operable to measure a measured current in the associated pair of wires without affecting the current in the pair of wires. A controller is operable to receive the measured current from each non-intrusive current sensor of the plurality of non-intrusive current sensors and compare the measured current to an expected current to determine an insulating condition of a circuit partially defined by the pair of wires of the plurality of wires.

A method for testing long term hydrothermal stability of a sorbent media includes the steps of determining an initial uptake capacity of a sorbent media, desorbing the sorbent media and exposing the sorbent media to pure steam in an aging vessel for a predetermined amount of time, after the predetermined amount of time, determining the aged uptake capacity of the sorbent media, comparing the initial uptake capacity with the aged uptake capacity to determine an amount of degradation that has occurred during the exposure to pure steam, calculating a service life of the sorbent media within a DAC unit. An aging vessel for exposing a sorbent media to steam includes at least one container, at least one lid, at least one port, an amount of water, at least one separating layer between the sorbent media and the amount of water, where the amount of water does not contact the sorbent.

The present method refers to a method to control the treatment of fiber-based materials. Herein, the inventive method provides an improved insight in the utilized fiber-based material treatment device to improve existing treatment processes and enable to implement new treatment relying on such improved insight. Furthermore, the present invention refers to a fiber-based material treatment device for such method. Additionally, the present invention refers to an upgrade kit to adapt an existing fiber-based material treatment device to be able to utilize such method. Additionally, the present invention refers to a computer program product enabling a computing entity to execute such method and improve the insight in a corresponding fiber-based material treatment device.

A method 200 for estimating an actual AC power consumption characteristic of an electrolysis system is presented, that is identically constructed to a reference system which comprises an AC/DC power conversion arrangement connected to a set of electrolyser units. The method 200 comprises determining 204 an initial voltage-current characteristic at an input of an electrolyser unit of the reference system in an initial condition, determining 206 a degraded voltage-current characteristic at that input in a degraded condition corresponding to a condition after operating the reference system for a maximum operation time, operating 208 the electrolysis system at a selected actual operating point, determining 210 an actual linear voltage-current characteristic at an input of an electrolyser unit of the electrolysis system as an actual linear function defined by the selected actual operating point and an intersection point between a first linear function comprising a section of the initial linear voltage-current characteristic beyond an initial minimum operating point of the electrolyser unit of the reference system and a second linear function comprising a section of the degraded linear voltage-current characteristic beyond a degraded minimum operating point, and estimating 212 an actual AC power consumption characteristic of the electrolysis system based on the actual linear voltage-current characteristic at the input of the electrolyser unit of the electrolysis system and a power loss of the AC/DC power conversion arrangement.

The invention relates to a method for controlling an electrolyzing plant (10, 14) having at least two electrolyzing devices (16, 26), wherein the electrolyzing devices comprise a first and a second electrolyzing device, the method comprising: - converting an alternating voltage of an electric power network (12) into an electrolyzing voltage, wherein converting is affected by an electric converter (22, 24) connected with the electric power network at a connection point (20), - detecting an electric quantity with a sensor (36) at the connection point (20), wherein the electric quantity is indicative for a specific network condition, - comparing the sensor signal (42) with at least one predetermined reference value, and - dependent on a comparing result, a consumed electric power of the at least one first electrolyzing device is reduced and a consumed electric power of the at least one second electrolyzing device is maintained.

In invention relates to a power supply arrangement (1) for an electrolyser (3), comprising a transformer unit (5) with terminals to an AC electric grid (7) and a first DC power supply unit (9A) that is positioned on a foundation (11) and comprising a second DC power unit (9B), the transformer unit (5) being positioned on the foundation (11) next to the first DC power supply unit (9A), the second DC power supply unit (9B) being positioned on an elevated platform (13) and arranged above of the first DC power supply unit (9A). The invention is further related to an electrolysis plant (25) that comprises an electrolyser (3) and a power supply arrangement (1).

Die vorliegende Erfindung betrifft ein A-CAES-System aufweisend: eine Kompressoreinheit, die ausgebildet ist eine zugeführte Luft zu komprimieren; eine Druckluftspeichereinrichtung, die ausgebildet ist die von der Kompressoreinheit zugeführte komprimierte Luft zu speichern; eine Expandereinheit, die ausgebildet ist aus der Druckluftspeichereinrichtung zugeführte Luft zu expandieren; ein Luft-Rohrleitungssystem, welches die Kompressoreinheit mit der Druckluftspeichereinrichtung und die Druckluftspeichereinrichtung mit der Expandereinheit verbindet zum Leiten von Luft in die Kompressoreinheit und aus der Kompressoreinheit in die Druckluftspeichereinrichtung und aus der Druckluftspeichereinrichtung in die Expandereinheit und aus der Expandereinheit nach dem Expandieren der Luft; eine erste Luft/Flüssigsalz-Wärmetauschereinrichtung, welche derart ausgebildet ist Wärmeenergie aus der durch die Kompressoreinheit komprimierten Luft aufzunehmen und die Luft auf eine erste Temperatur zu kühlen, und eine der ersten Luft/Flüssigsalz-Wärmetauschereinrichtung in dem Luft-Rohrleitungssystem nachgeschaltete erste Luft/Wasser-Wärmetauschereinrichtung, welche derart ausgebildet ist Wärmeenergie aus der durch die Kompressoreinheit komprimierten Luft aufzunehmen und die Luft auf eine zweite Temperatur weiter abzukühlen, welche niedriger als die erste Temperatur ist zum Zuführen der Luft der Druckluftspeichereinrichtung.

The invention relates to a method for controlling an electrolyzing plant (10) having an electrolyzing device (14), wherein the electrolyzing plant is supplied with electric energy from an electric power network (12) via a circuit breaker (16), wherein the switching status is controlled by a status signal (28) of a control station (18), wherein the electrolyzing plant has an electric converter connected with the electrolyzing device and the circuit breaker (16), wherein the converter converts the alternating voltage into a DC electrolyzing voltage and adjusts a converted power dependent on a control signal (22) of the control station, wherein the electrolyzing plant receives a disconnection signal (24) from a control center (26) of the electric power network, wherein the disconnection signal is submitted directly to the electric converter in order to cause the electric converter reducing the converted power of the electric converter independent from the control signal.

A method of determining an effective operating frequency (F) for de-powdering in additive component manufacturing is presented. The method comprising the steps of, (i), measuring a time signal (f(t)) during a de-powdering process, wherein remaining powder (1) is being removed from a given cavity (2) of the component (3), (ii), transmitting the signal (f(t)) to a data acquisition device (12), (iii), converting the time signal (f(t)) by means of a Fast Fourier Transformation (FFT) into a frequency spectrum (F), and (iv), determining at least a portion of this frequency spectrum (F) as a reference for subsequent de-powdering step. Moreover, a related apparatus is presented.

The present invention provides a method for detecting the current state of damage of a machine (10) , comprising acquiring a plurality of first pressure signals from a plurality of first pressure sensors (2), wherein each of the plurality of first pressure sensors (2) is arranged and configured to sense a pressure caused by a first process of the machine, acquiring at least one second pressure signal from at least one second pressure sensor (4), wherein the at least one second pressure sensor (4) is arranged and configured to sense a pressure caused by the first process of the machine and by a second process of the machine, wherein the plurality of first pressure sensors and the at least one second pressure sensor detect a pressure of the machine to be monitored over a time period, wherein the plurality of first pressure signals and the at least one second pressure signal exist in a time domain, transforming the plurality of first pressure signals and the at least one second pressure signal from the time domain into the frequency domain as discrete-time frequency spectra to achieve a plurality of transformed first pressure signals and at least one transformed second pressure signal, subtracting at least one of the plurality of the first averaged pressure signal from the at least one second averaged pressure signal to obtain a subtracted pressure signal providing indication about the second process of the machine, and determining the current status of the machine based on a cepstrum analysis of the subtracted pressure signal. The present invention further comprises a corresponding system for detecting the current state of damage of a machine and a computer readable storage medium.

A method of distributed direct air carbon capture for use with HVAC systems, including the steps of installing a filter assembly in a HVAC unit, adsorbing carbon dioxide in the filter by circulating a carbon dioxide containing gas through the filter, removing the filter assembly from the HVAC unit when the sorbent media has reached a predefined adsorption limit of carbon dioxide, replacing the filter assembly with a fresh filter assembly, storing the full filter assembly in a transportation unit, configuring the transportation unit to maintain a temperature and provide a sealed environment, filling the transportation unit with a plurality of full filter assemblies and relocating the transportation unit to a Desorption facility, configuring the transportation unit to interface with the desorption facility and preforming a desorption process for the plurality of full filter assemblies within the transportation unit, collecting an amount of carbon dioxide from the transportation unit.

The present invention relates to a metal alloy being especially useful, for example, as LM filler for Wide Gap Brazing of Classical Industrial Gas Turbine alloys. It further relates to the use of said metal alloy for brazing.

The present invention relates to a metal alloy being especially useful, for example, as LM filler for Wide Gap Brazing of new IGT alloys such as STAL15SX used for monocrystalline casting, Edge14 used for Laser Metal Deposition and equiaxed casting, and STAL125CC1 and STAL125CC2 used for equiaxed casting. It further relates to the use of said metal alloy for brazing.

A method and system for additive manufacturing with in-process quality assurance. The method comprising: positioning one or more calibration elements within a CAD model in one or more free spaces not occupied by a workpiece to be produced by an additive manufacturing process using an additive manufacturing machine on the basis of the CAD model, wherein the one or more calibration elements comprise one or more features replicating features to be comprised in the workpiece once produced; starting the additive manufacturing process to produce workpiece and the one or more calibration elements on the basis of the CAD model including the workpiece and the calibration elements, and initiating a monitoring process of the additive manufacturing process using an imaging sensor or a thermal sensor, or a combination of both, to capture current sensor data comprising image and/or thermal data of the one or more calibration elements being produced; detecting one or more deviations by comparing the current sensor data with historical sensor data stored; adjusting one or more production parameters of the additive manufacturing machine performing the additive manufacturing process based on the detected one or more deviations.

Die Erfindung betrifft eine Steuereinheit (1) und/oder eine Kommunikationsschnittstelle (7) für ein Schutzrelais (2), wobei die Steuereinheit (2) in einem Speicher eine Vielzahl von Schutzfunktionen (3, 5, 6) jeweils umfassend zumindest eine Schutzstufe (4) gespeichert hat und dazu eingerichtet ist, ein Signal für ein Öffnen des Schutzrelais (2) auszugeben, wenn die jeweilige Schutzstufe (4) von einem entsprechenden Betriebsparameter des Schutzrelais (2) überschritten wurde. Für ein Testen der Vielzahl von Schutzstufen (4) und/oder Schutzfunktionen (3, 5,6) des Schutzrelais ist die Steuereinheit (1) und/oder die Kommunikationsschnittstelle (7) dazu eingerichtet, zumindest eine ausgewählte Schutzstufe (4) der ausgewählten Schutzfunktion (5) aktiv zu lassen oder zu aktivieren und alle anderen Schutzstufen (4) der ausgewählten Schutzfunktion (5) und/oder anderer Schutzfunktionen (6) der Vielzahl von Schutzfunktionen (3, 5, 6) zu deaktivieren.