A multi-phase iron-core reactor has an iron core and windings. The iron core includes an outer iron core and an inner iron core. The outer iron core has teeth on which the N-phase windings are wound. The inner iron core faces the teeth through gaps, and has a shape so as to be able to provide at least two gap sizes in a selective manner.

A variable inductor of which variable inductance characteristics can be adjusted is provided. The inductor includes: a magnetic core having a preset shape; and a coil part surrounding a portion of the magnetic core and generating a magnetic flux depending on a current flow, wherein the magnetic core includes a first magnetic region formed of a first magnetic material and a second magnetic region formed of a second magnetic material different from the first magnetic material.

A variable inductor of which variable inductance characteristics can be adjusted is provided. The inductor includes: a magnetic core having a preset shape; and a coil part surrounding a portion of the magnetic core and generating a magnetic flux depending on a current flow, wherein the magnetic core includes a first magnetic region formed of a first magnetic material and a second magnetic region formed of a second magnetic material different from the first magnetic material.

The present application provides a coil for facilitating an electromagnetic coupling and method for increasing the degree of an electromagnetic coupling. The coil for facilitating an electromagnetic coupling includes one or more loops formed from a material through which an electric current can flow. At least one of the one or more loops is adjustable, including at least one of a size and a shape of the at least one of the one or more loops of the coil being selectively adjustable.

The present application provides a coil for facilitating an electromagnetic coupling and method for increasing the degree of an electromagnetic coupling. The coil for facilitating an electromagnetic coupling includes one or more loops formed from a material through which an electric current can flow. At least one of the one or more loops is adjustable, including at least one of a size and a shape of the at least one of the one or more loops of the coil being selectively adjustable.

Embodiments generally relate to linear variable displacement transformer (LVDT) position sensors. The position sensor comprises a bobbin, a moveable core, a primary coil of wire wound around the bobbin, and two secondary coils of wire wound around the bobbin about the primary coil using a fractional winding technique. For example, the winding length of the bobbin may be separated into three consecutive parts. Generally, the primary coil may be wound around the entire winding length of the bobbin. The first secondary coil may be wound around the first and second parts of the winding length. The second secondary coil may be wound around the second and third parts of the winding length. Additionally, the first secondary coil and the second secondary coil may overlap over the second part of the winding length.

Embodiments generally relate to linear variable displacement transformer (LVDT) position sensors. The position sensor comprises a bobbin, a moveable core, a primary coil of wire wound around the bobbin, and two secondary coils of wire wound around the bobbin about the primary coil using a fractional winding technique. For example, the winding length of the bobbin may be separated into three consecutive parts. Generally, the primary coil may be wound around the entire winding length of the bobbin. The first secondary coil may be wound around the first and second parts of the winding length. The second secondary coil may be wound around the second and third parts of the winding length. Additionally, the first secondary coil and the second secondary coil may overlap over the second part of the winding length.

A novel coupler, coupler housing and ferrite core and associated elements and concepts thereof and therefor for use in particular with an Inductive Power Transfer or Distributed Power System.

A coupled inductor with adjustable leakage inductance is provided. The coupled inductor includes a first magnetic element, a second magnetic element, and two coil assemblies. The first magnetic element includes a first magnetic plate and at least two first magnetic core columns, which are disposed on the first magnetic plate and spaced apart along an arrangement direction. The second magnetic element is coupled to the first magnetic element. The second magnetic element includes a second magnetic plate and at least two second magnetic core columns, which are disposed on the second magnetic plate and spaced apart along the arrangement direction. The second magnetic core columns are respectively coupled to the first magnetic core columns to form magnetic core column bodies. The coil assemblies have a same quantity as that of the magnetic core column bodies, and the coil assemblies are respectively sleeved around the magnetic core columns.

A coupled inductor with adjustable leakage inductance is provided. The coupled inductor includes a first magnetic element, a second magnetic element, and two coil assemblies. The first magnetic element includes a first magnetic plate and at least two first magnetic core columns, which are disposed on the first magnetic plate and spaced apart along an arrangement direction. The second magnetic element is coupled to the first magnetic element. The second magnetic element includes a second magnetic plate and at least two second magnetic core columns, which are disposed on the second magnetic plate and spaced apart along the arrangement direction. The second magnetic core columns are respectively coupled to the first magnetic core columns to form magnetic core column bodies. The coil assemblies have a same quantity as that of the magnetic core column bodies, and the coil assemblies are respectively sleeved around the magnetic core columns.