| General Electric Technology GmbH Patent applications |
| Patent application number | Title | Published |
|---|
| 20220271648 | ELECTRICAL ASSEMBLY - Embodiments of the disclosure can include various electrical assemblies. In one embodiment, an electrical assembly can include
| 08-25-2022 |
| 20220246378 | ENHANCED SWITCHGEAR MONITORING AND DIAGNOSTICS IN A PROTECTION RELAY - Systems, methods, and computer-readable media are disclosed for monitoring and diagnosing power system assets. An example of a power system asset may include an individual circuit breaker, a switchgear that may include multiple circuit breakers, or any other asset that may be included in a power system. A system for monitoring and diagnosing these power system assets may include one or more intelligent protection relay and switchgear monitor device(s) that may be communicatively coupled in a master-slave or peer-peer configuration in a time-synchronized manner of operation. | 08-04-2022 |
| 20220103091 | SWITCHING VALVE - There is provided a switching valve for a voltage source converter. The switching valve comprises a plurality of modules, each module including at least one switching element and at least one energy storage device, the or each switching element and the or each energy storage device in each module arranged to be combinable to selectively provide a voltage source, the switching valve including a controller configured to selectively control the switching of the switching elements to select one or more of the modules to contribute a or a respective voltage to a switching valve voltage,
| 03-31-2022 |
| 20220102979 | RELATING TO POWER TRANSMISSION NETWORKS - In the field of high voltage direct current (HVDC) power transmission networks, there is a need for improvements to allow a single power converter to control individual AC network voltages carried by multiple AC transmission conduits to multiple AC network elements, such as respective wind parks. | 03-31-2022 |
| 20220005657 | HIGH FREQUENCY TRANSIENTS SUPPRESSION FOR HVDISCONNECTORS WITH SLIDING RESISTOR - A disconnector to reduce considerably high voltage and high frequency current generated during the service no-load opening and closing,
| 01-06-2022 |
| 20200408826 | SYSTEMS, APPARATUS, AND METHODS FOR LOCATING A FAULT IN A PLURALITY OF WINDINGS OF A TRANSFORMER - There is provided systems, apparatus, and methods for locating a fault in a plurality of windings of a transformer. In one embodiment, the apparatus may include: a measurement device configured to measure electrical flow parameters of the transformer when the transformer is in an online mode; and a fault location determination unit configured to determine electrical flow parameters of the windings from the measured electrical flow parameters of the transformer, wherein the fault location determination unit is configured to process the determined electrical flow parameters of the windings to determine the location of the fault in the windings. | 12-31-2020 |
| 20200088058 | BACKSIDE SEAL FOR STEAM TURBINE GLAND SYSTEM - The present application provides a turbine. The turbine may include a rotor, a casing, and a gland seal system positioned between the rotor and the casing. The gland seal system may include a backside seal positioned about the casing. | 03-19-2020 |
| 20190270095 | PULSE FIRING PATTERN FOR A TRANSFORMER OF AN ELECTROSTATIC PRECIPITATOR AND ELECTROSTATIC PRECIPITATOR - The pulse firing pattern for a transformer of an electrostatic precipitator comprises first elements indicative of a pulse to be fired and second elements indicative of a pulse to not be fired. The pulse firing pattern further comprises couples of adjacent second elements and at least two first elements. | 09-05-2019 |
| 20180375404 | SLIP RING ARRANGEMENT FOR AN ELECTRIC MACHINE - The present disclosure relates to a slip ring arrangement for an electric machine to transfer current from a current source to a rotor of an electric machine. It is an object of the invention to provide a slip ring arrangement for an electric machine which guarantees appropriate cooling properties and mechanical stability. Disclosed is a slip ring arrangement for an electric machine with a slip ring composed of a cylindrical body, an end section and a shrink seat, whereas in the cylindrical body radial openings are formed, the shrink seat is shrinkable on a shaft, the shaft has a reduced diameter under the cylindrical body in order to form a sloped annular air gap beneath the cylindrical body to direct cooling medium through the radial openings. | 12-27-2018 |
| 20180156455 | SYSTEM AND METHOD FOR PREHEATING A BEATER MILL - A method for preheating a beater mill is provided. The method includes: rotating a beater wheel disposed within the beater mill to facilitate circulation of a gas stream between the beater mill and a furnace fluidly connected to each other via both a pulverized fuel conduit and a flue gas recirculation conduit; generating a burner gas via a burner disposed within the flue gas recirculation conduit such that the burner gas joins and heats the gas stream circulating through the beater mill and the furnace; and adjusting at least one of an air supply and a fuel supply to the burner via a controller based at least in part on one of a temperature of the gas stream at an entrance of the beater mill, a temperature of the gas stream at an exit of the beater mill, and an oxygen level within the beater mill. | 06-07-2018 |
| 20180154395 | CLASSIFIER AND METHOD FOR SEPARATING PARTICLES - A classifier for separating particles is provided. The classifier includes a rotor having a direction of rotation defined by a rotational axis of the rotor, and a plurality of blades disposed on the rotor around the rotational axis. At least one blade of the plurality has a swept orientation in the direction of rotation. The at least one blade is arranged to contact and direct the particles away from the classifier and thereby restrict the particles from concentrating in areas adjacent to the classifier. | 06-07-2018 |
| 20180109369 | SYSTEMS AND METHODS FOR SYNCHRONIZING TIME SOURCES WITHIN A PROTECTION ZONE OF A DIGITAL POWER SUBSTATION - Provided is a system for synchronizing time sources within a protection zone of a digital power substation. The system includes a global time source, a processing communication network, an electronic, and a process unit. The process unit includes a time source configured to receive and process data packets, which include a first time signal and first time quality from the global time source and the second time signal and second time quality from the electronic device. A time source of the process unit synchronizes with a protection zone master clock within the electronic device where the first time signal is unavailable or the first time quality of the global time source is degraded below a predetermined threshold. The embodiments also include a method for synchronizing time sources within a protection zone of a digital power substation. | 04-19-2018 |
| 20170264208 | IMPROVEMENTS IN OR RELATING TO ELECTRICAL ASSEMBLIES FOR VOLTAGE SOURCE SUB-MODULES - An electrical assembly for a voltage source sub-module is provided, which comprises a first semiconductor device module which includes a plurality of first semiconductor devices. The electrical assembly also includes an energy storage device which in turn includes a plurality of energy storage sections that are configured to control the magnitude of a current portion flowing through each first semiconductor device. The energy storage sections are so configured by arranging each energy storage section in isolation from the or each other energy storage section to divide a current flowing through the energy storage device into a plurality of the said current portions and thereby cause each current portion to flow through a respective one of the plurality of energy storage sections. The energy storage sections are still further so configured by connecting each energy storage section to a respective one of the plurality of first semiconductor devices. | 09-14-2017 |
| 20170261275 | SYSTEM AND METHOD FOR IMPROVING THE PERFORMANCE OF A HEAT RECOVERY STEAM GENERATOR - A heat recovery steam generator includes a gas inlet for receiving a flow of exhaust gas from a gas turbine, a gas outlet opposite the gas inlet, at least one heat exchanger intermediate the gas inlet and the gas outlet, the heat exchanger having a plurality of heat transfer surfaces configured to transfer heat from the exhaust gas to a fluid within the heat exchanger, and a valve associated with the heat exchanger and configured to regulate a flow of the fluid through the heat exchanger. The valve is controllable from an open position to a closed position to decrease the flow of the fluid through the heat exchanger in order to effect an increase in a temperature of the heat transfer surfaces of the heat exchanger to clean the heat transfer surfaces. | 09-14-2017 |
| 20170259209 | SYSTEM AND METHOD FOR IMPROVING THE PERFORMANCE OF A SELECTIVE CATALYST REDUCTION SYSTEM IN A HEAT RECOVERY STEAM GENERATOR - A heat recovery steam generator includes a gas inlet for receiving a flow of exhaust gas from a gas turbine, a gas outlet opposite the gas inlet and configured to transport the flow of exhaust gas to atmosphere, and a sorbent injection device intermediate the gas inlet and the gas outlet, the sorbent injection device including at least one injection port configured to inject a sorbent into the flow of exhaust gas. The sorbent is configured to react with an acid gas within the flow of exhaust gas to neutralize the acid gas and inhibit the formation of salt deposits. | 09-14-2017 |
| 20170197282 | METHOD FOR REPAIRING TURBINE COMPONENTS - A method is disclosed for repairing a precision casted turbine blade having a squealer and at least one letterbox which was closed by brazing during new-part manufacturing, wherein the letterbox area was damaged during operation in the first life cycle of the blade. | 07-13-2017 |
| 20170175534 | BLADE ASSEMBLY ON BASIS OF A MODULAR STRUCTURE FOR A TURBOMACHINE - A blade assembly having a modular structure, wherein the blade elements include at least a rotor blade airfoil, a footboard mounting part and a heat shield. The elements each have at its one ending an interchangeable connection for connection among each other, wherein the connection of the airfoil with respect to the other elements is based on a fixation in radial or quasi-radial extension compared to the rotor axis of the turbomachine. The assembling of the blade airfoil in connection with the footboard mounting part is based on a force-fit or form-fit fixation, or on use of a metallic and/or ceramic surface for the purpose of a friction-locked bonding actuated by adherence interconnecting, or on friction-locking with a detachable, permanent or semi-permanent fixation. | 06-22-2017 |
| 20170045219 | APPARATUS AND METHOD OF CONTROLLING THE THERMAL PERFORMANCE OF AN OXYGEN-FIRED BOILER | 02-16-2017 |
| 20170022821 | BLADE ASSEMBLY FOR A TURBOMACHINE ON THE BASIS OF A MODULAR STRUCTURE - A blade assembly of a power plant having a modular structure, wherein blade elements include at least one blade airfoil, and at least one footboard mounting part. Blade elements can each have at its one ending a configuration for an interchangeable connection among each other. The connection of the airfoil with respect to other elements can be based on a fixation in radially or quasi-radially extension relative gas turbine axis, wherein the assembling of the blade airfoil in connection with the footboard mounting part is based on a friction-locked bonding actuated by adherence interconnecting, or on use of a metallic and/or ceramic surface fixing blade elements to each other, or on closure configuration with a detachable, permanent or semi-permanent fixation. | 01-26-2017 |
| 20170021453 | GAMMA PRIME PRECIPITATION STRENGTHENED NICKEL-BASE SUPERALLOY FOR USE IN POWDER BASED ADDITIVE MANUFACTURING PROCESS - The application relates to the technology of producing three-dimensional articles by powder-based additive manufacturing, such as selective laser melting or electron beam melting. Especially, it refers to a high oxidation resistant and high gamma-prime precipitation containing Ni-base super alloy powder on basis of IN738LC with a modified chemical composition. Such powder has the following chemical composition (in wt.-%): 15.7-16.3 Cr, 8.0-9.0 Co, 1.5-2.0 Mo, 2.4-2.8 W, 1.5-2.0 Ta, 3.2-3.7 Al, 2.2-3.7 Ti, 0.6-1.1 Nb, 0.09-0.13 C, 0.007-0.012 B, 0.0045≦Zr<0.03, 0.001≦Si<0.03, remainder Ni and unavoidable residual elements and in addition a powder size distribution between 10 and 100 μm and a spherical morphology. As an advantage nearly crack free three-dimensional articles can be produced with more productive process parameters and without complicated and time consuming variations of the addive manufacturing processes (e.g. pre-heating) and/or post processing (e.g. hot isostatic pressing HIP). | 01-26-2017 |
| 20160380428 | VOLTAGE LIMITER - A voltage limiter includes first and second DC terminals connectable to a DC power transmission medium and ground, respectively. The voltage limiter further includes: (1) a current transmission path including two portions connected in series between the terminals and each including a non-linear resistive element; (2) a current bypass limb connected in parallel with the second portion and including at least one switching element; and (3) a control unit configured to control switching of the or each switching element to selectively switch the current bypass limb, during a fault condition, from a first mode to a second mode. In the first mode, current flows through the current bypass limb and bypasses the second current transmission path portion. In the second mode, current between the DC terminals is inhibited from flowing through the current bypass limb and thereby permits the current to flow through the second portion. | 12-29-2016 |
| 20160376899 | GUIDE VANE ASSEMBLY ON THE BASIS OF A MODULAR STRUCTURE - The invention relates to a guide vane assembly of a turbomachine based on a modular structure, wherein the guide vane elements include at least an airfoil, an inner platform, an outer platform, wherein the guide vane airfoil and/or platforms have at its one ending provisions for connection of the guide vane elements among each other. The connections of the guide vane elements among each other are configured as a detachable, permanent or semi-permanent fixation with respect to the radial or quasi-radial extension of the airfoil compared to the rotor axis of the turbomachine. The assembling of the airfoil with respect to at least one platform is based on a force-fit and/or a form-fit connection, or on the use of a metallic and/or ceramic fitting surface, or on force closure means with a detachable, permanent or semi-permanent fixation. | 12-29-2016 |
| 20160336750 | A CONTROLLER FOR A VOLTAGE SOURCE CONVERTER - A controller ( | 11-17-2016 |
| 20160336749 | POWER TRANSMISSION NETWORK - A power transmission network includes a first power transmission medium. The power transmission network further includes a first insulator or a plurality of first insulators arranged to provide insulation of the first power transmission medium with respect to ground potential. The power transmission network further includes a converter operably connected to the first power transmission medium, the converter including a first ground connection to operably connect the converter to ground. Additionally, an impedance of the first ground connection is configured to control a current flowing between the converter and ground via the first ground connection when the or each first insulator experiences an insulation failure and thereby limit a converter current flowing into a resultant electrical arc to be at or below a current threshold that prevents maintenance of the flashover arc. | 11-17-2016 |
| 20160336746 | MULTI-TERMINAL DC ELECTRICAL NETWORK - A multi-terminal DC electrical network comprises a plurality of DC terminals, each DC terminal operatively connected to at least one other DC terminal via a respective DC power transmission medium; a plurality of converters, each converter being operatively connected to a respective one of the DC terminals, the plurality of converters including at least one designated converter; and a controller including a solver configured to use an algorithm to process a plurality of values to compute a no-load DC voltage for a first designated converter as a function of the plurality of values. The plurality of values include a first value defining an operating mode of each designated converter; a second value defining a default electrical characteristic of the multi-terminal DC electrical network or a computation parameter of the algorithm; and a third value defining an electrical measurement corresponding to a voltage or current in the multi-terminal DC electrical network. | 11-17-2016 |
| 20160333731 | METHOD FOR OPERATING A GAS TURBINE AT PART LOAD - The invention refers to a method for controlling part load operation of a gas turbine comprising a controller wherein a load set point of the controller is greater or equal a minimum load set point. The minimum load set point depends on a hot gas temperature that is calculated based on a hot gas temperature model. | 11-17-2016 |
| 20160161125 | SEQUENTIAL BURNER FOR AN AXIAL GAS TURBINE - A sequential burner for an axial gas turbine comprises: a burner body, which is designed as an axially extending hot gas channel and further comprises a fuel injection device, which extends into said burner body perpendicular to the axial direction. The manufacturing of the burner body is simplified and the fuel injection is stabilized by designing said fuel injection device as a mechanically stiff component, and fixing said fuel injection device to said burner body in order to keep it aligned with said burner body and to stiffen said burner body against creep. | 06-09-2016 |
| 20160161118 | DAMPER FOR A GAS TURBINE - A damper for a gas turbine combustion chamber as shown in FIG. | 06-09-2016 |
| 20160160661 | ABRASIVE COATED SUBSTRATE AND METHOD FOR MANUFACTURING THEREOF - A coated substrate is described including a substrate material, which is coated at least in part with an oxidation-resistant coating, wherein the coating consists of a wear-resistant abrasive coating layer, which contains or consists of coated abrasive particles embedded in an oxidation-resistant matrix material, wherein at least some of the abrasive particles consist of α-Al | 06-09-2016 |
| 20160160649 | ROTOR HEAT SHIELD AND METHOD FOR SECURING THE SAME INTO A ROTOR ASSEMBLY - The present disclosure generally relates to a rotor assembly, and in particular relates to an improved rotor heat shield which provides an innovative configuration for securing the same to the rotor assembly. The rotor heat shield element is secured to the rotor assembly in correspondence of the groove in which it is inserted. Embodiments of the present disclosure can allow the removal of current fixation features on heat shields and blades. Furthermore, since the heat shield is no longer connected to a blade but directly to the rotor assembly, there is more freedom in selecting the number of heat shield elements to be provided to form the circumferential heat shield. | 06-09-2016 |
| 20160148754 | METHOD OF ASSEMBLING A TRANSFORMER - A method of assembling a transformer/reactor is disclosed comprising the steps of: receiving a first coil having a first coil end conductor; receiving a second coil having a second coil end conductor; mounting the first coil and second coil on respective limbs of a magnetic core; arranging the first coil such that the first conductor projects outwardly from the first coil from a point between the first and second coils; arranging the second coil such that the second conductor projects outwardly from the second coil from a point between the first and second coils; and connecting the conductors to form an interconnection between the coils. | 05-26-2016 |
| 20160146470 | BURNER OF A GAS TURBINE - The burner of a gas turbine has a duct, a vortex generator extending in the duct and including a leading edge and a trailing edge. The trailing edge has a first order lobed shape. The first order lobed shape is defined by a second order lobed shape. Preferably a nozzle for fuel injection is connected to the vortex generator and the second order lobed shape is only provided at the nozzles. | 05-26-2016 |
| 20160146468 | FUEL LANCE COOLING FOR A GAS TURBINE WITH SEQUENTIAL COMBUSTION - A fuel lance is disclosed for injecting a gaseous and/or liquid fuel mixed with air into an axial hot gas flow flowing through a sequential combustor of a gas turbine, the fuel lance having at least one finger extending in a longitudinal direction into the axial hot gas flow of the gas turbine essentially perpendicular to the hot gas flow. The finger is configured as a streamlined body which has a streamlined cross-sectional profile. The body has two lateral surfaces essentially parallel to the axial hot gas flow. The body includes an enclosing outer wall having a longitudinally extending air plenum for the distributed introduction of air into the at least one finger. The air plenum is provided with a plurality of distributed impingement cooling holes, such that air exiting through the impingement cooling holes impinges on the inner side of the leading edge region of the body. | 05-26-2016 |
| 20160146467 | COMBUSTOR LINER - The present invention relates to a combustor liner for a gas turbine, the combustor liner having substantially cylindrical shape and comprising a first section and a second section wherein the first section is upstream of the second section with respect to the hot gas flow during operation, wherein the first section is ring shaped and comprises a rounded lip section and a trailing section, wherein an inner radius of the trailing section is increasing along a centerline of the liner in the direction of the hot gas flow during operation. The invention also relates to a combustor and a gas turbine comprising such combustion liner. | 05-26-2016 |
| 20160146466 | LOBE LANCE FOR A GAS TURBINE COMBUSTOR - A lobe lance is disclosed for a gas turbine combustor which includes a plurality of N (N≧4) lobe fingers, each configured as a streamlined body with two lateral surfaces. A plurality of nozzles for injecting a gaseous and/or liquid fuel mixed with air are provided whereby lobes running between the nozzles are provided for improving the mixing quality and reducing pressure loss in said combustor. The lobes of each lobe finger have one of two opposite orientations with respect to said flow direction, and the lobes of all lobe fingers follow a predetermined pattern of orientation across the lobe fingers at least one pair of neighboring lobe fingers has the same lobe orientation resulting in a grouped lobe arrangement ( . . . LL . . . or . . . RR . . . ) such that at least two of the vortices generated by the lobe shape downstream of the lobe fingers combine. | 05-26-2016 |
| 20160146464 | COMBUSTOR WITH ANNULAR BLUFF BODY - The present invention relates to a gas turbine combustor comprising: a flow sleeve; a combustion liner located at least partially within the flow sleeve thereby creating a main passage between the flow sleeve and the combustor liner; a dome located forward of the flow sleeve and encompassing at least a part of the combustion liner, the dome having a substantially rounded head end thereby forming a turning passage between the liner and the head end; and a swirler wall aligned along a centerline of the combustor, the swirler wall projecting into the liner, wherein the swirler wall and the rounded head end are connected, wherein the connection forms an annular end face. | 05-26-2016 |
| 20160146036 | ENGINE CASING ELEMENT - An engine casing element comprises at least one clearance control cavity, the clearance control cavity being delimited by a clearance control cavity inner wall and having a clearance control cavity longitudinal extent. At least one insert member is arranged inside the clearance control cavity. The insert member is arranged and configured to effect at least one of a flow guide function and a heat transfer enhancement function. | 05-26-2016 |
| 20160141969 | ELECTRICAL ASSEMBLY - An electrical assembly includes a DC tap including first and second tap terminals that are respectively connectable to first and second DC power transmission media, the DC tap including a tap limb extending between the first and second tap terminals and having two limb portions separated by a third tap terminal connectable to an electrical load, each tap limb portion including a DC blocking capacitor. The assembly further includes a current return configured to electrically interconnect the or each AC terminal to the third tap terminal, a converter unit, and a controller configured to selectively control the converter unit to generate at least one first non-fundamental frequency alternating current component at the or each AC terminal and modify the or each first non-fundamental frequency alternating current component to enable the DC tap to draw power from the DC electrical network for supply to the electrical load. | 05-19-2016 |
| 20160141962 | CONVERTER - A voltage source converter includes a converter limb directly connected between first and second DC terminals. The converter limb includes an AC terminal, a first limb portion directly connected between the first DC terminal and the AC terminal, and a second limb portion directly connected between the second DC terminal and the AC terminal. Only one of the first and second limb portions includes a multilevel converter block, the other of the first and second limb portions includes a switching block, the switching block is switchable to selectively permit current flow in at least one direction in the corresponding limb portion and inhibit current flow in at least one direction in the corresponding limb portion, and at least one of the first and second limb portions is controllable to control the configuration of an AC voltage waveform at the AC terminal. | 05-19-2016 |
| 20160141876 | ALTERNATE ARM CONVERTER - An alternate arm converter includes at least one converter limb that defines first and second limb portions. Each limb portion includes at least one director switch connected in series with a chain-link converter between one of two DC terminals and an AC terminal of the converter. The chain-link converters are operable to generate a voltage waveform at the AC terminal, and the director switches are operable to switch the respective chain-link converters in and out of circuit between the respective DC terminal and the AC terminal. The converter also includes a controller configured to selectively control the switching of each director switch to form a current circulation path including each limb portion and the DC network. The controller, during formation of the current circulation path, forces an alternating current to flow through the current circulation path to transfer energy between the chain-link converters of the limb portions. | 05-19-2016 |
| 20160118907 | SEMICONDUCTOR SWITCHING STRING - A semiconductor switching string includes a plurality of series-connected semiconductor switching assemblies, each having a main semiconductor switching element that includes first and second connection terminals. The main semiconductor switching element also has an auxiliary semiconductor switching element electrically connected between the first and second connection terminals. Each semiconductor switching assembly also includes a control unit configured to switch on a respective auxiliary semiconductor switching element to selectively create an alternative current path between the first and second connection terminals whereby current is diverted to flow through the alternative current path to reduce the voltage across the corresponding main semiconductor switching element. The or each control unit is further configured to switch on the auxiliary semiconductor switching element when the voltage across the corresponding main semiconductor switching element differs from a voltage reference derived from the voltage across all of the main semiconductor switching elements. | 04-28-2016 |
| 20160084093 | Turbine Airfoil of Composite Material and Method of Manufacturing Thereof - A turbine blade having a root and a tip and an airfoil with a core section made of composite material and a protective sheath or layer joined to the composite core at a location or locations exposed to erosion is described with the composite core of the airfoil being continuous from a location in vicinity of the root to a location in vicinity of the tip of the blade and including a section which widens with distance from the rotational axis along the length of the airfoil and which ends at the location in vicinity of the tip of the blade. The protective sheath or layer is secured by interference fit with widening section of the core. | 03-24-2016 |
