899results about "Fixed transformers" patented technology

The application provides an oil-immersed transformer, which comprises an oil tank body, a transformer body and a heat dissipation device, the oil tank body is made of aluminum alloy material and comprises an oil tank cover plate, an oil tank shell wall, an oil tank bottom plate and two oil tank fixing seats, the transformer body is arranged inside a space surrounded by the oil tank body, the transformer body comprises a planar winding core, a high-voltage coil, a low-voltage coil, an upper clamp and a lower clamp, the upper clamp and the lower clamp are made of aluminum alloy material, the heat dissipation device is fixed to the outer wall of the oil tank shell wall, and the heat dissipation device has the advantages of small density, light weight, strong heat dissipation capacity, non-magnetic conductivity and high mechanical strength, so that the volume of the transformer is reduced, the weight of the transformer is reduced, the heat dissipation effect is good, and the operation state is stable; and the planar winding core structure is adopted, so that the no-load loss and the no-load current are low, the structure is compact and reasonable, and the operation reliability of the product is improved.

The invention discloses a boost-buck and power flow control integrated transformer system. The transformer system comprises a transformer main body which receives the voltage of a three-phase power supply device and performs step-up or step-down processing on the voltage; and the phase angle adjusting device is magnetically connected with the transformer main body and is electrically isolated from the transformer main body, the phase angle adjusting device is used for adjusting the phase angle of the voltage subjected to the step-up or step-down processing of the transformer main body and outputting the voltage subjected to the phase angle adjustment to a power transmission line. By combining the power flow control function with the transformer, the occupied area of the whole set of equipment can be reduced, the number of control loops and the number of equipment can be reduced, the investment cost can be reduced, the anti-short-circuit capability of the transformer can be improved, the structural complexity can be reduced, and the voltage to ground of a tap switch can be reduced.

The utility model discloses a three-phase five-column transformer and a circuit device. The three-phase five-column transformer comprises a first magnetic core structure and a second magnetic core structure, wherein the first magnetic core structure and the second magnetic core structure are the same in structure; wherein each magnetic core structure comprises a magnet yoke, two side columns and three middle columns which are integrally formed; the distance between each side column and the nearest middle column is half of the distance between the two adjacent middle columns; the first winding coils are respectively arranged on three middle columns of the first magnetic core; the three first winding coils are electrically connected in a triangular manner; the second winding coils are respectively arranged on three middle columns of the second magnetic core; and the three second winding coils are electrically connected in a triangular manner. The transformer is more compact in structure, the utilization rate of the magnetic core is increased to a certain extent, miniaturization development of the transformer is facilitated, and the stability of the magnetic core structure in the transformer is improved.

The invention relates to an electromagnetic transient model construction method based on a phase-shifting transformer and a current prediction method and system, and belongs to the field of transformers. According to winding coupling, interphase coupling and a magnetic circuit structure of an exciting transformer in the phase-shifting transformer, an exciting transformer electromagnetic transient model is constructed; constructing an electromagnetic transient model of the series transformer according to winding coupling, interphase coupling and a magnetic circuit structure of the series transformer in the phase-shifting transformer; according to the electrical connection relation between the iron core in the exciting transformer and the iron core in the series transformer, the electromagnetic transient model of the exciting transformer is connected with the electromagnetic transient model of the series transformer, the electromagnetic transient model of the phase-shifting transformer is generated, and compared with a steady-state model, the influence of interphase and winding coupling is considered in the model construction process, so that the model construction efficiency is improved. And a magnetic circuit structure and an iron core structure are considered, so that higher accuracy of the model in an electromagnetic transient process is achieved.

A resin film (100) comprising a core layer (2) and adhesive resin layers (1) which are respectively provided to both sides of the core layer (2), wherein: the adhesive resin layers (1) each comprise an adhesive resin composition that contains an epoxy resin; the dielectric breakdown strength of a cured product of the adhesive resin composition is not less than 300 kV / mm; the core layer (2) comprises a polyimide film; and the dielectric breakdown strength of the polyimide film is not less than 300 kV / mm.

The present invention relates to a submodule for a semiconductor transformer in single packaging with reduced partial discharge quantity and excellent insulation performance that is capable of applying an equipotential structure for each stage of the submodule for the semiconductor transformer to further improve insulation performance by reducing partial discharge quantity in the semiconductor transformer while improving insulation performance by securing separation distance between a high voltage unit and a low voltage unit in the semiconductor transformer. The submodule for semiconductor transformer in single packaging with reduced partial discharge quantity and excellent insulation performance in the present invention comprises: a high voltage unit for converting high-voltage low-frequency AC power into high-frequency AC power; a transforming unit for converting the high-voltage AC power into low-voltage AC power; and a low voltage unit for converting the low-voltage AC power into low-voltage DC power.

A method and system are disclosed for providing electrical power from a utility electric grid to a fracturing operation, and an electrically powered fracturing system. A mobile substation includes at least two transformer units that are operatively coupled to the utility electric grid in a parallel orientation, wherein the transformer units are capable of accessing power from the utility electric grid and stepping down the power for delivery to a switchgear. An electric motor is operatively coupled to a hydraulic fracturing pump and operatively controlled by a variable frequency drive. At least one open air relay cable is operatively coupled between the switchgear and the electric motor and capable of delivering power to the electric motor.

Provided is a transformer exciting inrush current suppression equipment assembly that realizes the cleaning ability of the mesh ventilation opening by utilizing natural wind power, ensures the cleaning functions of smog and windblown sand, and realizes the fall of attached dust. 【Solution means】 The transformer exciting inrush current suppression equipment assembly includes a transformer 1, a mesh ventilation opening 2 is fixedly attached to the side wall of the transformer, a stopper chute 3 is provided on the inner wall of the transformer, a slide lever 4 is slidably connected inside the stopper chute, a rotating piece 5 with dust is rotatably attached to the side wall of the slide lever, an interlocking block is fixedly attached to the side wall of the slide lever, a fixed plate 7 is attached to the side wall of the transformer, and an interlocking spring is fixedly attached between the fixed plate and the interlocking block. The present invention utilizes the interaction between the slide lever, the rotating piece with dust, the fixed plate, the interlocking spring and the pneumatic assembly, and between the dust collection tank and the rotating piece with dust.

The objective of the present invention is to achieve downsizing of a power-receiving coil unit including a power-receiving coil.　A power-receiving coil unit (60) comprises: a first power-receiving coil (34a); a ferromagnetic first core member (65) having a first base part (65b) and a core part (65a) that protrudes to one side of the first base part and passes through the first power-receiving coil; a substrate (66) disposed on the other side of the first base part; and a transformer in which a primary-side coil is configured by wiring formed on the substrate. The first core member constitutes a part of the transformer core.

A power converter includes an autotransformer, first switches, and second switches. The autotransformer includes multiple windings. The first switches are coupled between an input node and an output node of the power converter. The second switches are coupled between a reference potential and the output node. Yet further, the first switches are operable to control switching of circuit paths including the multiple windings of the autotransformer. The second switches are operable to convey currents from the multiple windings of the autotransformer through the second switches to the output node.

The high-impedance autotransformer comprises an iron core, a series winding, a common winding I and a common winding II, the common winding I and the common winding II are distributed in the axial direction of the iron core and located on different sections of the iron core, and the series winding, the common winding I and the common winding II are sequentially connected to the iron core in a sleeved mode. The coil supporting block is arranged between the windings and is fastened with the iron core; the supporting cushion blocks are arranged on winding end faces at the two ends of the transformer, and the coil supporting blocks and the supporting cushion blocks are made of insulating materials. The self-coupling transformer solves the technical problems that the self-coupling transformer in the prior art is low in short-circuit impedance and easy to damage during short-circuit impact.

The invention comprises a method and apparatus for processing power, comprising the steps of: generating / using 3-phase power; feeding an AC drive with the 3-phase power, the AC drive generating a first output; and transforming the first output with a zigzag transformer, the zigzag transformer linked to at least one load output / load connector. The method and apparatus comprises an optional filter for filtering the 3-phase power prior to the step of transforming, the filter including a distributed gap core material.

An integrated transformer includes: two magnetic cores, wherein each magnetic core includes two magnetic yokes arranged opposite to each other along a first direction and two magnetic columns located between the two magnetic yokes, the two magnetic columns are arranged opposite to each other along a second direction; two short-circuited magnetic blocks, wherein one magnetic yoke in one of the magnetic cores is connected to one magnetic yoke in the other magnetic core through one of the short-circuited magnetic blocks to connect the two magnetic cores in series into a ring; four first windings, wound on four magnetic columns of the two magnetic cores, respectively; and a second winding, wound on the magnetic core or the short-circuited magnetic block, wherein magnetic flux directions generated by the second winding in two magnetic columns of any one of the magnetic cores are the same.

A power converter assembly may include multiple electrically conductive paths such as a first electrically conductive path, a second electrically conductive path, and a third electrically conductive path. The first electrically conductive path extends through first magnetically permeable material; the second electrically conductive path extending through second magnetically permeable material. The third electrically conductive path extends through both the first magnetically permeable material and the second magnetically permeable material. For example, the first electrically conductive path may be disposed alongside and in parallel with a first portion of the third electrically conductive path in the first magnetically permeable material; the second electrically conductive path may be disposed alongside and in parallel with a second portion of the third electrically conductive path in the second magnetically permeable material.

An apparatus such as a power converter includes a transformer assembly, a first series circuit path, and a second series circuit path. The transformer assembly includes multiple windings such as a first winding and a second winding. The first series circuit path includes a first circuit component disposed in series with a first winding of the multiple windings; the second series circuit path including a second circuit component disposed in series with a second winding of the multiple windings. The first series circuit path is connected in parallel with the second series circuit path.

The invention relates to a vehicle charging device (2) for inductively charging an energy store (7) of a vehicle (1), the vehicle charging device (2) comprising an interface (5) for receiving electrical power, a first part comprising at least one coil, a second part comprising power electronics, the invention relates to a vehicle charging device (2) comprising an interface (5), power electronics configured to convert electric power received with said interface (5) into a defined alternating current, and a cooling system comprising a fluid accelerator, a fluid inlet and a fluid outlet, said cooling system being configured to cool the vehicle charging device (2) with a fluid, where the first and second parts are spatially separate, where the first and second parts are spatially separated, where the first and second parts are separated from each other. The cooling system includes a first cooling path disposed in a first portion and a second cooling path disposed in a second portion, where a fluid inlet is disposed in the first portion and a fluid outlet is disposed in the second portion, and where a fluid accelerator is configured to deliver fluid from the first cooling path to the second cooling path.

To solve a problem in which the parasitic capacitance between a first coil pattern and a second coil pattern becomes large.SOLUTION: A coil substrate 3 is a laminated substrate formed by laminating a plurality of single-layer substrates 35 (35A, 35B, ...), and the single-layer substrates 35 have first conductive patterns 36A, 36B, ... formed along the periphery of a first insertion hole 31, and the first conductive patterns 36A, 36B, ... of the adjacent single-layer substrates 35 (35A, 35B, ...) are electrically connected to each other to form a first coil pattern 36. The single-layer substrate 35 has second conductive patterns 37A, 37B, ... formed along the periphery of a second insertion hole 32, and a second coil pattern 37 is formed by electrically connecting the second conductive patterns 37A, 37B, ... of the adjacent single-layer substrates 35 (35A, 35B, ...).SELECTED DRAWING: Figure 6

The present invention discloses a winding connection structure of an auto-coupling step-down phase-shifting transformer, comprising an iron core body and a separator block; the iron core body comprises a horizontal column and a vertical column; the number of the horizontal columns is two; the number of the vertical columns is three, and a coil is wound on the vertical column; a plurality of the separator blocks are fixedly arranged on the vertical column in a linear array, and a coil winding cavity of the auto-coupling step-down phase-shifting transformer is formed between two adjacent separator blocks; the structure also comprises a wedge-shaped groove; two of the wedge-shaped grooves are arranged on the separator block; the wedge-shaped groove is an arc structure; the two wedge-shaped grooves on a plurality of the separator blocks constitute two symmetrically arranged spiral structures. The winding connection structure of the auto-coupling step-down phase-shifting transformer has a simple and reasonable structure and an ingenious design, and can fix the position of the coil winding to avoid the position of the coil from being offset, thereby improving the use effect of the auto-coupling step-down phase-shifting transformer.

To provide a coil component in which the leak of a magnetic flex is suppressed.SOLUTION: A coil component A2 includes a coil 3 that generates a magnetic field by input current from the outside. The coil 3 includes a plurality of first circulation parts 31 and a plurality of second circulation parts 32 each having a rectangular annular shape when viewed in a first direction (circumferential direction t). The first circulation parts 31 are arranged in the circumferential direction t and form a first cylindrical part 5A. The second circulation parts 32 are arranged in the circumferential direction t and form a second cylindrical part 5B. The second cylindrical part 5B exists inside the first cylindrical part 5A when viewed in the circumferential direction t. Each of the cylindrical part 5A and the second cylindrical part 5B has an annular shape when viewed in a thickness direction (axial direction s) that is orthogonal to the circumferential direction t. The direction of the input current flowing in each of the first circulation parts 31 and the direction of the input current flowing in each of the second circulation parts 32 are the same.SELECTED DRAWING: Figure 23

The invention discloses a transformer coil and a paint dipping device and method, and relates to the technical field of transformer production. The paint dipping device comprises a paint dipping pool, a top frame is arranged at the top end of the paint dipping pool, a top cover is arranged at the top end of the top frame, a lifting frame is slidably arranged in the paint dipping pool and the top frame, a lead screw lifting assembly matched with the lifting frame is arranged on the inner wall of the top frame, and a paint dipping rotary stirring assembly is arranged on the lifting frame. The lifting frame is provided with a rotation synchronous reciprocating swing assembly used in cooperation with the paint dipping rotation stirring assembly, and a coil positioning assembly is arranged in the paint dipping rotation stirring assembly. Through the arrangement of the paint dipping rotating stirring assembly and the rotating synchronous reciprocating swinging assembly, the paint dipping rotating stirring assembly drives the rotating frame to rotate, and meanwhile the rotating synchronous reciprocating swinging assembly drives the rotating frame to intermittently and reciprocatingly turn over and adjust with the fixed shaft as the axis; the shearing force of the coil to the paint liquid in the paint dipping process is improved, the infiltration capacity and the coating uniformity of the paint liquid to the coil are enhanced, and the paint liquid evenly permeates the surface of the coil.

The present invention relates to a submodule for a semiconductor transformer in single packaging with reduced partial discharge quantity and excellent insulation performance that is capable of applying an equipotential structure for each stage of the submodule for the semiconductor transformer to further improve insulation performance by reducing partial discharge quantity in the semiconductor transformer while improving insulation performance by securing separation distance between a high voltage unit and a low voltage unit in the semiconductor transformer.The submodule for semiconductor transformer in single packaging with reduced partial discharge quantity and excellent insulation performance in the present invention comprises: a high voltage unit for converting high-voltage low-frequency AC power into high-frequency AC power; a transforming unit for converting the high-voltage AC power into low-voltage AC power; and a low voltage unit for converting the low-voltage AC power into low-voltage DC power.

The present disclosure relates to a system (10) including a transformer (12) including a tank (14) configured to receive a liquid (20). The system (10) further includes an overflow device (22) and a connection device (24) configured to fluidly connect the tank (14) and the overflow device (22). The overflow device (22) includes an elastically deformable flexible member (26). The overflow device (22) is configured, under deformation of the flexible member (26), to periodically receive a portion of the liquid (20) from the tank (14) and return at least a portion of the received liquid to the tank (14) through the connection device. The system (10) further includes a heat transfer device (42) configured to provide a flow (44) of a cooling medium (46) in at least a portion of the overflow device (22) and / or the connection device. The present disclosure also relates to additional systems.

Transmission (210) for a vehicle (1201) with a drive shaft (221) and an output shaft (222), with an automatic transmission (213) composed of a plurality of planetary gear sets for switchable adjustment of a plurality of speed ratios between a speed of the drive shaft (221) and a speed of the output shaft (222), and with a reversing unit (215) connected in series in a drive connection between the drive shaft (221) and the output shaft (222) to the automatic transmission (213) for switchable adjustment of a reversal of the direction of rotation acting on the plurality of speed ratios between a direction of rotation of the drive shaft (221) and a direction of rotation of the output shaft (222), characterized in that the transmission (210) has a transmission housing (225; 441, 443, 545) in which the automatic transmission (213) and the reversing unit (215) are jointly arranged are that the gearbox housing (225;441, 443, 545) a housing wall (441, 545) extending continuously in the direction of extension of the drive shaft (221) and the output shaft (222) and enclosing the automatic transmission (213) and the reversing unit (215), and a housing cover (443) closing the housing wall (441, 545) on the side of the output shaft (222), wherein the output shaft (222) extends through an opening in the housing cover (443).

To provide a divisible tank for an electromagnetic device, in which the strength of the divided part is greater, and the amount of insulating oil that leaks from the inside in the event of an accident or the like can be reduced.SOLUTION: An electromagnetic equipment tank according to the present invention is divided into an upper tank 1, a lower tank 2, and an intermediate tank 3 located between the upper tank 1 and the lower tank 2, and the intermediate tank 3 includes two horizontally divided partial tanks 3a and 3b. The partial tanks 3a and 3b are joined together by an external connecting member 8, a reinforcing plate 7, and an internal connecting member 9. The external connecting member 8 is installed outside the intermediate tank 3, and is composed of a U-shaped member sandwiching the flange portions provided outside the partial tanks 3a and 3b. The reinforcing plate 7 is installed outside the intermediate tank 3 and is composed of a planar plate-like member. The internal connecting member 9 is installed inside the intermediate tank 3, and is composed of a U-shaped member that sandwiches the flange portions provided inside the partial tanks 3a and 3b.SELECTED DRAWING: Figure 1A

To provide an on-vehicle power supply device having features which achieve a simple structure, excellent heat dissipation, and high operation efficiency, and to provide a vehicle having the on-vehicle power supply device.SOLUTION: In an on-vehicle power supply device and a vehicle having the on-vehicle power supply device, the on-vehicle power supply device (100) includes a housing (110), a magnetic device (120), and a shielding assembly (130). An attachment position (111) is provided within the housing (110), and the magnetic device (120) is an integrated part and provided at the attachment position (111). The shielding assembly (130) is provided within the housing (110) and surrounds an outer periphery of the attachment position (111).SELECTED DRAWING: Figure 2

A transformer system (1) for a direct current converter system (20) comprises a plurality of windings (4a, 4b, 4c, 5a, 5b, 5c) for three electrical phases (3a, 3b, 3c), the windings (4a, 4b, 4c, 5a, 5b, 5c) being electrically connected to provide a 15° phase shift, and comprising at least three separate tanks (6a, 6b, 6c, 18a, 18b, 18c), wherein the windings (4a, 4b, 4c, 5a, 5b, 5c) associated to different electrical phases (3a, 3b, 3c) are located in different ones of the separate tanks (6a, 6b, 6c, 18a, 18b, 18c).

AC electric machines have capacitive windings or connections, represented in circuit diagrams by capacitors, such as wire wound into electromagnetic coils, capacitively coupled and separated by a dielectric, which replace traditional coils in machines such as motors, generators, transformers, coils, and antennas.

The invention relates to an iron core for a transformer and the transformer. The present invention suppresses an increase in process coefficient due to magnetic flux transfer in the lamination direction of an iron core by controlling the variation in the thickness of an insulating film of an oriented electromagnetic steel sheet with an insulating film used in the iron core. The iron core for the transformer is formed by stacking a plurality of single layers formed by one or a plurality of oriented electromagnetic steel plates with insulation films, and each single layer is provided with at least one steel plate discontinuous part extending along the direction intersecting with the flow direction of magnetic flux in the single layer. The standard deviation (sigma) of the thickness of the insulating film in a region sandwiched between the steel plate discontinuous section of one single layer and the steel plate discontinuous section of the other single layer, which are adjacent in the lamination direction, is 2-5 [mu] m (inclusive).

The application relates to a natural ester transformer winding structure, comprising a winding wire cake, further comprising: a shielding section arranged at the head end of the winding wire cake; and a large oil channel arranged at the head end and the tail end of the winding, the thickness of the large oil channel being larger than that of a basic oil channel in the winding. The above scheme provided by the application increases the longitudinal capacitance of the winding, the longitudinal capacitance can compensate the ground capacitance current of the winding, the impulse voltage distribution of the winding is more uniform, the impulse overvoltage capacity of the transformer is higher, if the shielding section is not used, the impulse voltage mostly falls on the head end of the winding, which is very harmful to the insulation of the head end of the winding, meanwhile, the arrangement of the large oil channel reduces the hot spot temperature rise of the winding end, improves the average temperature rise of the whole winding, ensures that the temperature rise of the transformer winding is more uniform, and further improves the reliability of the transformer during operation.

The present disclosure relates to an integrated power panel. The system includes one or more busbars coupled to the AC line, branch relays each coupled to the busbars and a respective circuit breaker, and current sensors each corresponding to at least one respective branch relay of the plurality of branch relays. The system also includes an air interface disposed in front of the plurality of branch relays and including openings corresponding to the branch relays, allowing an electrical terminal of each branch relay to protrude forward through a respective opening. A circuit breaker engages with each respective branch relay on a null junction to create an array of branch circuit breakers. The combination of relays and circuit breakers allows each branch circuit to be controllable. The relay may include a current sensor, such as a shunt, for determining branch circuit current and controlling the relay. Control circuitry manages relay switch operation and monitors branch circuit operation.