The present disclosure discloses a coil structure for a dry-type transformer and a winding method therefor. The coil structure for a dry-type transformer comprises multiple coil layers and a supporting framework, which is provided with multiple supporting layers. The spacer blocks of each intermediate supporting layer comprise a rising spacer block for rising and supporting spacer blocks in addition to the rising spacer block, a thickness of the rising spacer block being greater than a thickness of the supporting spacer block, and the rising spacer blocks of several intermediate supporting layers being staggered along the circumferential direction. The present disclosure decreases the height of the entire coil efficiently, meanwhile abates the problem that the wire is centralized in a single area, inhibits the temperature rise phenomenon of transformers efficiently, and prolongs the lifetime of transformers.

A transformer includes a first winding arranged around an axis, and a second winding arranged around the axis. The second winding includes a litz wire having an end portion located at an axial end position of the second winding and a middle portion located at an axial middle position of the second winding. The litz wire has a first cross section at the end portion and a second cross section at the middle portion, the cross sections each including in a quadrant between the axial outward direction and the direction pointing towards the first winding a curvature extending between the axial outward direction and the direction pointing towards the first winding. The curvature of the first cross section is smaller than the curvature of the second cross section thereby reducing the peak magnitude of the electrical field between the end portion of the second winding and the first winding.

A transformer includes a first winding arranged around an axis, and a second winding arranged around the axis. The second winding includes a litz wire having an end portion located at an axial end position of the second winding and a middle portion located at an axial middle position of the second winding. The litz wire has a first cross section at the end portion and a second cross section at the middle portion, the cross sections each including in a quadrant between the axial outward direction and the direction pointing towards the first winding a curvature extending between the axial outward direction and the direction pointing towards the first winding. The curvature of the first cross section is smaller than the curvature of the second cross section thereby reducing the peak magnitude of the electrical field between the end portion of the second winding and the first winding.

An apparatus for creating an electromagnetic coil, including: a platform for building the coil; a dispenser to dispense a wire via a nozzle; a wire feeder to feed the wire through the dispenser; a coating applicator to apply a bondable overcoat to the wire, such that when a section of the wire is laid adjacent to another section of the wire, the bondable overcoats of the respective sections bond to each other; one or more actuators to provide at least three degrees of freedom to the dispenser and/or the platform; and a processor to control the one or more actuators to move the dispenser and/or platform such that the wire is dispensed at a specified location relative to the platform; wherein the processor controls the one or more actuators based on a program stored in a memory, the program including instructions for laying the wire according to a predetermined pattern.

An apparatus for creating an electromagnetic coil, including: a platform for building the coil; a dispenser to dispense a wire via a nozzle; a wire feeder to feed the wire through the dispenser; a coating applicator to apply a bondable overcoat to the wire, such that when a section of the wire is laid adjacent to another section of the wire, the bondable overcoats of the respective sections bond to each other; one or more actuators to provide at least three degrees of freedom to the dispenser and/or the platform; and a processor to control the one or more actuators to move the dispenser and/or platform such that the wire is dispensed at a specified location relative to the platform; wherein the processor controls the one or more actuators based on a program stored in a memory, the program including instructions for laying the wire according to a predetermined pattern.

A magnetic module includes: a magnetic core; and plural enameled wires wound on the magnetic core, the enameled wire being wound on the magnetic core to form a primary coil and a secondary coil, the primary coil including a first group of enameled wires and a second group of enameled wires, the secondary coil including a third group of enameled wires and a fourth group of enameled wires, wherein the parts of the first group of enameled wires and the fourth group of enameled wires wound around the magnetic core are twisted together to form a first stranded wire, the parts of the second group of enameled wires and the third group of enameled wires wound around the magnetic core are twisted together to form a second stranded wire, and the first stranded wire and the second stranded wire are twisted together to form a total stranded wire.

A magnetic module includes: a magnetic core; and plural enameled wires wound on the magnetic core, the enameled wire being wound on the magnetic core to form a primary coil and a secondary coil, the primary coil including a first group of enameled wires and a second group of enameled wires, the secondary coil including a third group of enameled wires and a fourth group of enameled wires, wherein the parts of the first group of enameled wires and the fourth group of enameled wires wound around the magnetic core are twisted together to form a first stranded wire, the parts of the second group of enameled wires and the third group of enameled wires wound around the magnetic core are twisted together to form a second stranded wire, and the first stranded wire and the second stranded wire are twisted together to form a total stranded wire.

A coil component includes: a core that includes a winding-core portion and a flange portion that is formed on an end surface of the winding-core portion; a wire that is wound around the winding-core portion; and an outer electrode that is formed on a bottom surface of the flange portion, to which an end portion of the wire is connected, and that includes a first metal layer that forms a surface of the outer electrode. At least a part of the end portion of the wire is embedded in the first metal layer.

A coil component includes: a core that includes a winding-core portion and a flange portion that is formed on an end surface of the winding-core portion; a wire that is wound around the winding-core portion; and an outer electrode that is formed on a bottom surface of the flange portion, to which an end portion of the wire is connected, and that includes a first metal layer that forms a surface of the outer electrode. At least a part of the end portion of the wire is embedded in the first metal layer.

A medical instrument and method to facilitate the performance of medical procedures. The instrument has at least one tracking sensor being disposed at a distal portion of the instrument. The sensor includes a tube containing a ferrite powder, and a coil wound around the tube. The method includes inserting the medical instrument into a subject. The sensor generates a signal in response to a magnetic field to enable the physician to track the instrument in the subject.