46results about "Fixed inductances without magnetic core" patented technology

An electrical power distribution system 500 comprises a power cable and a shunt reactor 504 electrically connected to a conductor line 406a of the power cable. The shunt reactor comprises a winding having an open core such that, when submerged in water, the open core is water filled. The power cable may be a submarine power cable, or a pigtail cable (510a, 512a) arranged to electrically connect to a conductor line of a submarine power cable 402. The system may further comprise a non-magnetic support (602, Figures 6A-B) for securing the winding and maintaining its shape. The winding may contain no electrical shielding, or be absent a protective armour. The shunt reactor may further be electrically connected to a sheath 508a of the corresponding conductor line. The shunt reactor may be electrically connected at a splice connection of a plurality of cable segments spliced together. The shunt reactor may connect a non-magnetic ground terminal (408, Figure 4) to the conductor line. The system may comprise a plurality of conductor lines and a plurality of shunt reactors. The shunt reactor, being water filled in use, can be more lightweight and easier to install underwater than conventional shunt reactors.

An inductor component includes a coil wiring line having a meandering shape meandering in a first direction and extending in a second direction crossing the first direction; first and second external terminals; a first connection conductor that extends in a third direction crossing the first direction and the second direction and that is connected to the first external terminal and the coil wiring line; and a second connection conductor that extends in the third direction and that is connected to the second external terminal and the coil wiring line. When viewed in the third direction, a coil center line is between a first center line and a second center line, the coil center line being a center of the coil wiring line in the first direction and extending parallel to the second direction.

A three-phase choke comprises the following: an outer circumferential iron core and at least three iron-core coils that come into contact with or are attached to an inner surface of the outer circumferential iron core. The at least three iron-core coils have corresponding iron cores and corresponding windings wound around the iron cores, and gaps that can magnetically connect one of the at least three iron-core coils and an iron-core coil adjacent to the one ...

A coil component (100) is provided with a magnetic core (10), a coil (90), a main body member (20) having a base portion (30) in which a fitting recess (50) is formed, and a terminal member (80) fitted to the fitting recess (50) by a fitting structure, the fitting recess (50) including a pair of first planar portions facing each other, the first planar portions (50) including a pair of second planar portions facing each other, and the second planar portions (50) including a pair of second planar portions facing each other. At least a portion of the terminal member (80) is disposed between the pair of first surface-shaped portions, and the fitting structure is one or more protrusions (55) formed in the fitting recess (50), the protrusions (55) being flattened between the terminal member (80) and one of the first surface-shaped portions, and the protrusions (55) being flattened between the terminal member (80) and the other of the first surface-shaped portions. The terminal member (80) is fitted to the fitting recess (50) in a state in which the terminal member (80) is pressed by the protrusion (55) toward at least the other of the pair of first planar portions.

A coil assembly for a wireless power transfer (WPT) system includes a coil carrier tray constructed of a non-conductive, magnetically transparent material that has channels formed therein for receiving a coil. The coil includes a plurality of uninsulated rectangular Litz wire bundles that are woven, braided, or twisted together and then rolled or compressed into a rectangular shape and coated with a non-insulating thin film coating. Each Litz wire bundle, in turn, includes a plurality of uninsulated Litz wire sub-bundles that are woven, braided, or twisted together and then rolled or compressed into a rectangular shape. Each Litz wire sub-bundle, in turn, includes insulated Litz wire strands that are woven, braided, or twisted together and then rolled or compressed into a rectangular shape. The coil design maximizes the amount of conductive material in the channels, maximizing flux density while creating a uniform magnetic flux at the coil surface.

A coil conductor attachment system includes a terminating strip, a coil end receiving barrel extending from the terminating strip, a connector attaching the barrel to the terminating strip, a conductor having a conductor end at least partially disposed within the barrel, and a crimped portion of the coil end receiving barrel, the crimped portion forms a mechanical and electrical connection with a conductor end disposed therein. In another aspect, a coil winding termination method includes providing a termination bar, attaching a coil end receiving barrel to the termination bar, disposing a coil conductor end at least partially within the barrel, and crimping a portion of the coil end receiving barrel to form a mechanical and electrical connection with the coil conductor end.

A compensation block for air-core inductors or transformers is formed as a sandwich structure. The sandwich structure of the compensation block includes an upper insulating material block, a lower insulating material block, and an elastomer block arranged between the upper and lower insulating material blocks. The novel compensation block allows the formation of gaps due to settlement to be reduced.

The invention relates to a coil assembly (1) for electrical energy supply networks. Said coil assembly (1) comprises a hollow-cylindrical air-core choke coil (2) having a vertically extending coil axis (3), and also comprises a support structure (7) having an annular support body (10), which annular support body (10) defines an upper supporting plane, and which annular support body (10) is located below a lower axial end (14) of the air-core choke coil (2) and is designed to support the air-core choke coil (2) in a load-bearing manner. The support structure (7) also comprises a plurality of column-like insulators (11) which are designed to support the annular support body (10) and the air-core choke coil (2) in an electrically insulating and load-bearing manner with respect to a ground foundation or with respect to a ground level (8). The annular support body (10) comprises concrete (18), which concrete (18) is used as the material for providing the load-bearing, strength-relevant annular shape of the support body (10), wherein the concrete (18) contains a non-ferromagnetic reinforcement (19). Said non-ferromagnetic reinforcement (19) comprises fibres, rods (20) and / or mats (21) made of at least one non-ferromagnetic material embedded in the concrete (18).

An inductor component includes an element body, a coil on the body and spirally wound along an axis, first and second external electrodes electrically connected to the coil, and first and second through wirings which penetrate a substrate of the element body between main surfaces. The first coil wirings and through wirings, and the second coil wirings and through wirings, are connected as follows. With respect to two of the first through wirings adjacent to each other in a direction of the axis, on the first main surface, a relationship between a radius of an equivalent circle diameter of an end surface of each of the first through wirings and a minimum distance between end surfaces of the two first through wirings is satisfied, and with respect to two of the second through wirings adjacent to each other in the direction of the axis, a similar relationship is satisfied.

To provide coils for a plasma processing device that may decrease losses in voltage and current at high power, and methods of forming the same.SOLUTION: A coil 200 for a plasma processing device comprises: a coil form 205; and a plurality of concentric cross-section wire windings disposed around the coil form 205, the wire 225 having a spacing between adjacent turns of about 0.25 to 1.0 of the radius of the wire and a diameter-to-length ratio between about 2:1 and 3:1.SELECTED DRAWING: Figure 3

Three-phase choke, which includes the following: an outer circumferential iron core (20), wherein the outer circumferential iron core (20) comprises a plurality of outer circumferential iron core units (21 to 23), and at least three iron core coils (31 to 33) that come into contact with or are connected to an inner surface of the outer circumferential iron core (20), wherein the at least three iron core coils (31 to 33) comprise corresponding iron cores (41 to 43) and corresponding windings (51 to 53) wound around the iron cores (41 to 43), each of the iron cores (41 to 43) extending in a radial direction of the outer circumferential iron core (20), the three-phase choke further comprises a plurality of intermediate coil iron cores (81 to 83) arranged between the at least three iron core coils (31 to 33), and Columns (101 to 103), which can magnetically connect the at least three iron core coils (31 to 33) and the intermediate coil iron cores (81 to 83), are formed between the at least three iron core coils (31 to 33) and the intermediate coil iron cores (81 to 83).

Provided is a magnetic base body having improved insulating properties of metal magnetic particles. A magnetic base body according to one embodiment includes: a plurality of metal magnetic particles containing Fe, Si, and an element a; first oxide films covering surfaces of the plurality of metal magnetic particles; and second oxide films covering surfaces of the first oxide films. The first oxide films are composed mainly of an oxide of Si. The second oxide films are composed mainly of an oxide of the element a. A first thickness indicating a thickness of the first oxide films is larger than a second thickness indicating a thickness of the second oxide films.

The invention relates to a compensating block for air choke coils and transformers, wherein the compensating block comprises a sandwich structure having an upper insulating material block, a lower insulating material block and an elastomer block located between the upper insulating material block and the lower insulating material block. The compensating block according to the invention can reduce gaps formed due to settling.

The invention relates to an HVDC air-core reactor (1) having at least two electric terminals. Said air-core reactor (1) comprises at least one hollow-cylindrical winding layer (2 - 2"), the electrical conductor wire (17) of which, together with its lateral-surface insulation layer (18), is wound helically around a reactor axis (14), and a charge dissipation layer (20) with a predefined electrical conductivity, which charge dissipation layer (20) is applied at least to an outer lateral surface (21) of the at least one hollow-cylindrical winding layer (2 - 2") and is electrically conductively connected to at least one of the electrical terminals of the air-core reactor (1). The charge dissipation layer (20) comprises at least one first strip element (23) consisting of electrically conductive material, which runs helically around the reactor axis (14) and bears against the outer lateral surface (21) of the at least one hollow-cylindrical winding layer (2 - 2"). The invention also relates to a method for producing such an HVDC air-core reactor (1). An HVDC air-core reactor is thus created with which undesired, field-strength-induced particle deposits can be avoided during active operation and which HVDC air-core reactor can still be constructed as cost-effectively and as functionally reliably as possible.

Provided is a magnetic coupling coil component having a high dimensional accuracy for the distance between two coil conductors. A magnetic coupling coil component according to one aspect includes: first and second coil conductors; a first base body portion covering the first coil conductor; and a second base body portion covering the second coil conductor. The first coil conductor has a first winding portion extending around a coil axis. The second coil conductor has a second winding portion extending around the coil axis. The first base body portion has a main body portion and at least one protruding portion. The end surface of the main body portion in a first direction along the coil axis is a first surface. At least one protruding portion protrudes from the first surface. The second coil conductor is positioned such that the second winding portion contacts with at least one protruding portion.

To provide a magnetic substrate in which the insulating properties of metal magnetic particles are improved.SOLUTION: A magnetic substrate according to an embodiment includes a plurality of metal magnetic particles containing Fe, Si, and the element α, a first oxide film covering the surface of each of the plurality of metal magnetic particles, and a second oxide film covering the surface of the first oxide film. The first oxide film is primarily composed of an oxide of Si. The second oxide film is primarily composed of an oxide of the element α. A first thickness indicating the thickness of the first oxide film is thicker than a second thickness indicating the thickness of the second oxide film.SELECTED DRAWING: Figure 5

The coil has a coil body and a plurality of concentric cross-section wire windings arranged around the coil body, the wire having a spacing between adjacent windings of about 0.25 to 1.0 of the wire radius. Also, a coil for a plasma processing apparatus includes a coil body and a plurality of concentric cylindrical cross-section wire windings arranged around the coil body, the wire having a spacing between adjacent windings of about 0.25 to 1.0 of the wire radius and a diameter-to-length ratio of about 2:1 to 3:1.

In the embodiments of the present invention, an integrated filter is provided. The integrated filter comprises a cabinet body, and a heat dissipating plate, a resistor and a supporting structure provided in the cabinet body, wherein the resistor is adhered and mounted on a surface of the heat dissipating plate, and the supporting structure is fixedly connected with the heat dissipating plate and is used for fixedly supporting the heat dissipating plate in the cabinet body. As the cabinet body is provided therein with the heat dissipating plate and the resistor is adhered on the surface of the heat dissipating plate, the heat dissipation of the resistor is performed by the heat dissipating plate by which the heat dissipation performance of the integrated filter can be improved. Therefore, it is not necessary for the resistor to use a relatively large steel grid resistor or a heat pipe resistor. As it is possible to use a resistor relatively small in volume, the volume of the cabinet body to be used can be reduced. That is, the volume of the cabinet body in the embodiments of the present invention will be relatively small, facilitating mounting.

A choke coil including a conductor element having a plurality of coil turns, a first terminal member adapted for electrically connecting the choke coil to a first circuit terminal of an electric circuit, and a second terminal member adapted for electrically connecting the choke coil to a second circuit terminal of the electric circuit. The first terminal member is adapted to compensate lateral dimensional variance between locations of the first circuit terminal and second circuit terminal, and the second terminal member is adapted to compensate longitudinal dimensional variance between locations of the first circuit terminal and second circuit terminal, wherein the lateral dimensional variance is perpendicular to a longitudinal direction of the choke coil extending between the first terminal member and the second terminal member, and the longitudinal dimensional variance is parallel to the longitudinal direction.

Methods for forming a high current inductor leverage solid core materials to form ribbon inductors. In some embodiments, the method may include forming a central opening lengthwise through a solid core conductive material, wherein the solid core conductive material has an outer diameter, the central opening forms an inner diameter of the solid core conductive material, and a difference between the outer diameter and the inner diameter is a thickness of a ribbon conductor of the high current inductor and removing a spiral portion of the solid core conductive material to form the ribbon conductor of the high current inductor, wherein a width of the spiral portion forms a gap spacing between windings of the ribbon conductor.

There is described a central column for a toroidal field coil of a tokamak plasma chamber. The central column comprises a support member extending vertically along a central axis of the central column made from material with high compressive strength, and current carrying elements located radially outward of the support member. The support member is in structural contact with the current carrying elements so as to support them radially against compressive Lorentz stress.

An electrical power distribution system comprising a power cable and a shunt reactor electrically connected to a conductor line of the power cable, the shunt reactor comprising a winding having an open core such that, when submerged in water, the open core is water filled.

A choke (D) for performing a high voltage test, the choke comprising: a housing (G); a coil (S) arranged inside the housing (G); at least one conductive member; and a magnetic conductive device (FF), the magnetic conductive device guiding a magnetic flux that can be generated by means of the coil (S). The conductive member is arranged between the coil (S) and the housing (G). The magnetic conductive device (FF) comprises a ferromagnetic material and is arranged between the coil (S) and the at least one conductive member, so that the magnetic flux that can be generated by means of the coil (S) is guided to pass by the conductive member or is substantially guided to pass by the conductive member.

Single-phase choke coil comprising an outer circumferential iron core (20); at least four iron cores (41 to 44) which are in contact with or connected to the inner surface of the outer circumferential iron core (20), wherein the four iron cores (41 to 44) extend radially and are arranged at equal intervals in the circumferential direction such that the angle formed by the center lines of any two adjacent iron cores (41 to 44) is 90 degrees, wherein the iron cores (41 to 44) have inner ends which converge radially towards the center of the outer circumferential iron core (20), the angle of their tip end being 90 degrees; coils (51 to 54) which are wound around each of the four iron cores (41 to 44), wherein magnetically coupling gaps (101 to 104) are formed between two adjacent iron cores of the at least four iron cores (41 to 44), separating the inner ends of the iron cores (41 to 44) from each other; and at least one additional iron core (45) having the cross-section of an isosceles triangle, arranged between two adjacent coils (51, 54), wherein the coils (51, 54) are in contact with the inner surface of the outer circumferential iron core (20) and are surrounded by the two associated iron cores (41, 44), the outer circumferential iron core (20) and the additional iron core (45).

An inductor assembly includes a coil including a spirally wound metal foil.

An air core dry type power reactor comprises a double wall sound shield including concentric a first and a second roving cylinders, the first cylinder positioned against the outermost layer of a coil including a plurality of cylindrically shaped winding layers but detached from the coil by a first airgap between the outermost layer and the first cylinder or attached by ductsticks to the coil. The second cylinder is placed at a distance from the first cylinder to form an acoustic cavity between two double walls of the cylinders. The double wall sound shield further including a plurality of sound absorbent panels to attenuate resonances of the acoustic cavity between the double walls of the cylinders. The plurality of sound absorbent panels comprises a layer of sound absorbing material and each of the plurality of sound absorbent panels is separated from the first roving cylinder by a second airgap.

A coil conductor attachment system includes a termination bar, a coil end receiver barrel extending therefrom, a connector attaching the barrel to the bar, a conductor having a conductor end portion at least partially disposed within the barrel, and a crimped portion of the coil end receiver barrel forming a mechanical and electrical connection with the conductor end portion disposed therein. In another aspect, a method of terminating a coil winding includes providing a termination bar, attaching a coil end receiver barrel to the termination bar, disposing a coil conductor end portion at least partially within the barrel, and crimping a portion of the coil end receiver barrel to form a mechanical and electrical connection with the coil conductor end portion.

The present application relates to an inductor component and a mounting structure of an inductor component. The inductor component includes a substrate, a coil provided on the substrate and wound in a spiral shape along an axis, and first and second external electrodes provided on the substrate and electrically connected to the coil. The substrate includes a substrate having first and second main surfaces facing each other. The axis of the coil is arranged in parallel with the direction of the short dimension among the length, width, and height of the substrate. The coil includes a plurality of first coil wirings provided on the first main surface, a plurality of second coil wirings provided on the second main surface, a plurality of first through wirings penetrating the substrate from the first main surface to the second main surface and arranged along the axis, and a plurality of second through wirings penetrating the substrate from the first main surface to the second main surface, arranged on the opposite side of the first through wirings with respect to the axis, and arranged along the axis. The first coil wirings, the first through wirings, the second coil wirings, and the second through wirings are sequentially connected.

The present invention discloses a composite insulating cylinder, a current limiter and a processing technology thereof. The processing technology of the current limiter includes S1, material preparation, S2, pretreatment and grinding, S3, drilling, S4, coating, S5, drying, S6, installation, S7, molding, S8, vacuum, S9, pouring, S10, molding and grinding, and S11, surface painting, as well as a convenient installation device. The present invention relates to the field of electric power engineering technology. The composite insulating cylinder, the current limiter and a processing technology thereof solve the problem that the short-circuit current of the busbar of the medium-voltage power grid approaches or even exceeds the breaking capacity of the circuit breaker, and the safety of breaking the phase-to-phase short-circuit fault is directly threatened. More seriously, since the anti-short-circuit capacity is not adapted to the short-circuit current level of the installation site, accidents of serious damage to large transformers above 110kVS due to external short circuits often occur. When the current limiter is installed on the surface of the composite insulating cylinder, the height of the two ends is uneven, resulting in a stuck phenomenon, and the problem that manual installation needs to be repeated.

A three-phase reactor includes: an outer peripheral iron core; and at least three iron-core coils that come in contact with an inner surface of the outer peripheral iron core or are joined to the inner surface. The at least three iron-core coils include corresponding iron cores and corresponding coils wound around the iron cores, and gaps that can magnetically connect one iron-core coil of the at least three iron-core coils and an iron-core coil adjacent to the one iron-core coil to each other are formed between the one iron-core coil of the at least three iron-core coils and the iron-core coil adjacent to the one iron-core coil.