665results 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 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.

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.

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.

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 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

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.

A three-phase power conversion circuit and a control method thereof are disclosed. The three-phase LLC power conversion circuit receives an input voltage, outputs an output voltage, and includes a three-phase transformer, an input switch group, an output switch group and a resonant circuit group. The control method includes steps of: S1: detecting each zero-crossing point of the input voltage, the output voltage and each output current in each phase; and S2: controlling the output switch group according to a ratio of the output voltage to the input voltage, wherein a switching state of at least one of the rectification switches is controlled to lead / lag the corresponding input switch, and / or adjusting each of the phases of the input switches to increase a duty cycle, wherein switching frequencies of the plurality of input switches are adjusted according to the output voltage, a reference voltage and a soft switching setting condition.

The utility model discloses a self-coupling phase-shifting transformer with a safe switching function, and particularly relates to the field of self-coupling phase-shifting transformers, which comprises an iron core, a high-voltage winding, a voltage-regulating winding, a public winding, a phase-regulating winding, a voltage-regulating on-load tap-changer, a phase-regulating on-load tap-changer and a no-load reversing tap-changer, the iron core comprises three central columns, and each central column is sequentially provided with a phase modulation winding, a voltage regulation winding, a common winding and a high-voltage winding from inside to outside. According to the utility model, when the potential of the tail end of the common winding is zero and the phase modulation on-load tap-changer is at a rated tap-changer position, the second electric mechanism of the no-load reversing tap-changer can be operated, and at the moment, the self-coupling phase-shifting transformer is at a zero phase angle position; the polarity conversion of the no-load commutation tap-changer can be ensured under the specific condition of zero phase angle, the safe operation of the no-load commutation tap-changer can be protected, and the safe switching is realized.

To provide packaging of power converters.SOLUTION: A power converter comprises a stack of circuit layers, a magnetic core, an area of the stack of circuit layers, and power converter circuit components mounted on the stack of circuit layers. The stack of circuit layers has a hole which extends through each of the circuit layers. A portion of the circuit layers form an energy transfer element that comprises an input winding and an output winding. Each winding includes at least one winding layer having a planar winding and connections for electrical connectivity. The magnetic core is positioned within the hole substantially perpendicular to the stack. The area of the stack of circuit layers encompasses the windings and connections for electrical connectivity of the input and output windings. The power converter circuit components are mounted within the area of the stack and outside the magnetic core.SELECTED DRAWING: Figure 3A

The present application relates to a kind of transformer winding and transformer for inhibiting inter-pie potential difference, comprising: first tap pie, including first knotted section and first continuous section connected with each other, and the turns of wire on first knotted section and first continuous section all include multiple turns;Second tap pie, including second knotted section and second continuous section connected with each other, and the turns of wire on second knotted section and second continuous section all include multiple turns;Wherein, the turns of wire of first continuous section and the turns of wire of second continuous section are adjacent number of turns continuous;First knotted section is connected with second knotted section, and the turns of wire of first knotted section and second knotted section are adjacent number of turns discontinuous.Above-mentioned transformer winding for inhibiting inter-pie potential difference, can be adjusted the number of turns of knotted section, to effectively inhibit the inter-pie potential difference of knotted winding.The method for improving the inter-pie potential difference distribution of knotted structure winding of traditional, effectively inhibits the inter-pie potential difference under the lightning impulse of winding, improves insulation reliability, easy to operate, will not increase production cost.

To provide a magnetic element which is available as a non-contact connector while suppressing a size or cost by reducing the number of components.SOLUTION: A magnetic element 100 comprises: a first magnetic component 102 including two or more coils 12 (12a, 12b); and a second magnetic component 104 which is paired with the first magnetic component 102 and separated from the first magnetic component 102. Two magnetic flux paths are switched by inverting magnetic flux generated from at least one of the coils 12 (12a, 12b), thereby switching between a non-contact connector mode in which the first magnetic component 102 and the second magnetic component 104 are magnetically coupled and operated as a non-contact connector which performs power transmission with no electrical contact in one magnetic flux path and a single body mode in which the first magnetic component 102 is operated as a single body in the other magnetic flux path.SELECTED DRAWING: Figure 1

We provide liquid-cooled thermal management solutions to improve volumetric power density for pulse load power converters and other applications where space is constrained. [Solution] A power converter using a liquid cooling system to cool a liquid-cooled transformer 100, wherein the coils 135 of the transformer 120 are in physical / thermal contact with a cold plate 160 embedded in a thermally conductive solid (epoxy or resin) and sandwiched between the coils and / or in contact with the outer surface of the coils. In addition / or, the cold plate may also be in physical / thermal contact with the transformer core. A cooling fluid is supplied so as to flow through the cold plate. In another embodiment, the transformer is immersed in a cooling fluid such as oil in a thermally controlled housing that houses the coils. The cold plate is in physical / thermal contact with the housing. The cooling fluid supplied into the cold plate conducts heat from the oil-surrounded transformer.

To provide a device including an improved winding carrier.SOLUTION: A device (1) includes a winding carrier (2), at least one winding (3), a magnetic core (7), and first and second terminals (5, 6). The winding carrier (2) surrounds the magnetic core (7) in a defined area such that an insulation path between the terminals along the underside (14) of the device (1) does not include bridging by the magnetic core (7). In particular, the lower side (14) of the winding carrier (2) is in a closed configuration.SELECTED DRAWING: Figure 1A

A coil block fixation system (30) for a transformer comprises a coil block body to be coupled to a coil (19) of the transformer, and a supporting plate that is coupled to an upper surface (23) of the coil block body (10) oppo site a bottom surface (24) of the coil block body (10). The coil block fixation system (30) further comprises two or more rods (3) that are coupled to an upper surface (21) of the supporting plate (1) opposite a bottom surface (22) of the supporting plate (1) for setting a load to the supporting plate (1) towards the coil block body (10). The supporting plate (1) and the coil block body (10) are formed geometrically in coordination with each other such that one comprise at least one recess (13, 14) and the other one comprise at least one protrusion (9, 16) that extends into the corresponding recess (13, 14) forming a respective movement limiter to counteract a translation and / or a rotation of the supporting plate (1) relative to the coil block body (10).

A transformer including a core, such as, for example, a single-phase core, that includes a plurality of wound limbs, primary and secondary concentric windings formed on each limb of the plurality of wound limbs, and at least one tertiary concentric winding formed on fewer than all limbs of the plurality of wound limbs.