Siemens Energy

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 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.

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.

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.

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

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).

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.