An object of the present invention is to provide a coil component in which leakage of magnetic flux from a magnetic gap is reduced. A coil component includes: a drum-shaped core 20 having a winding core part 30 with a gap G formed therein and first and second flange parts 31 and 32; a plate-like core 40 fixed to the first and second flange parts 31 and 32; and wires W1 to W3 wound around the winding core part 30 and each having one end connected to a terminal electrode provided on the first flange part 31 and the other end connected to a terminal electrode provided on the second flange part 32. According to the present invention, the gap G formed in the winding core part 30 functions as a magnetic gap, and magnetic flux leaking from the magnetic gap is shielded by the plate-like core 40. Thus, even when the magnetic gap is provided to reduce a tolerance due to characteristic variation of a magnetic material, it is possible to solve the problem that other electronic components are affected by the leakage magnetic flux.

The present disclosure provides a magnetic component including a winding, a first magnetic core and a circuit component, and a wireless power-transferring device including the magnetic component. The winding is formed by winding a coil, and having a first penetration portion at a middle portion of the winding. The first magnetic core is disposed at a side of the winding, and a first insulating support portion is disposed between the first magnetic core and the winding. The circuit component is located within the first penetration portion and electrically connected with the winding. Disposing the circuit component within the first penetration portion at the middle portion of the winding can effectively save space.

The present disclosure provides a magnetic component including a winding, a first magnetic core and a circuit component, and a wireless power-transferring device including the magnetic component. The winding is formed by winding a coil, and having a first penetration portion at a middle portion of the winding. The first magnetic core is disposed at a side of the winding, and a first insulating support portion is disposed between the first magnetic core and the winding. The circuit component is located within the first penetration portion and electrically connected with the winding. Disposing the circuit component within the first penetration portion at the middle portion of the winding can effectively save space.

An elastic matrix determination method and a vibration analysis method for a laminated iron core, with which it is possible to optimally determine an elastic modulus of a laminated iron core. When a vibration analysis of a laminated iron core obtained by laminating steel sheets is performed by using a configuration expression indicating a relationship between stress and strain in a matrix display by using an elastic matrix, a shear modulus in two surfaces including a laminating direction of the laminated iron core included in the elastic matrix in the configuration expression is determined in consideration of slip between laminated steel sheets.

Disclosed herein is a coil component that includes first and second substrates, a first coil pattern formed on one surface of the first substrate, a second coil pattern formed on one surface of the second substrate, a first terminal electrode connected to one end of the first coil pattern and protruding from the first substrate, and a second terminal electrode connected to one end of the second coil pattern and protruding from the second substrate. The first and second substrates are laminated such that the first and second terminal electrodes overlap each other and are connected to each other.

Disclosed herein is a coil component that includes first and second substrates, a first coil pattern formed on one surface of the first substrate, a second coil pattern formed on one surface of the second substrate, a first terminal electrode connected to one end of the first coil pattern and protruding from the first substrate, and a second terminal electrode connected to one end of the second coil pattern and protruding from the second substrate. The first and second substrates are laminated such that the first and second terminal electrodes overlap each other and are connected to each other.

A magnetic integrated hybrid distribution transformer includes a main transformer, a series isolation transformer and a converter, wherein: an iron core includes an iron beam unit, an iron yoke unit and a leakage magnetic core unit. The main transformer includes secondary windings, primary windings and control windings all of which are layer-windings and wound around main transformer iron beams. The series isolation transformer includes converter side windings and grid side windings all of which are pancake-windings and wound around isolation transformer iron beams. The converter side windings and the control windings are respectively connected with the converter by the star connection with neutral point. Leakage magnetic cores are respectively inserted between the primary windings and the control windings or between the converter side windings and the grid side windings, so as to achieve magnetic integration design of the transformer and output connection inductor of the converter.

The invention relates to a device (11) and a method for producing transformer cores (12), the device comprising a retaining system (19) having a stacking table (18) for collecting sheets of metal (16) from which a transformer core (12) is constructed and having at least two positioning aids for the sheets, the stacking table forming a positioning surface (26) for the positioning aids and being equipped with the positioning aids, the stacking table and the positioning aids being realized such that a free positioning and a location-independent fastening of the positioning aids within the positioning surface is possible, the device having a positioning system (25) by means of which the positioning aids can be disposed on and/or be removed from the stacking table.

The invention relates to a device (11) and a method for producing transformer cores (12), the device comprising a retaining system (19) having a stacking table (18) for collecting sheets of metal (16) from which a transformer core (12) is constructed and having at least two positioning aids for the sheets, the stacking table forming a positioning surface (26) for the positioning aids and being equipped with the positioning aids, the stacking table and the positioning aids being realized such that a free positioning and a location-independent fastening of the positioning aids within the positioning surface is possible, the device having a positioning system (25) by means of which the positioning aids can be disposed on and/or be removed from the stacking table.

A grain-oriented electrical steel sheet for a stacked transformer core. The steel sheet having a sheet thickness t, where t and an iron loss deterioration ratio obtained by subjecting the steel sheet under elliptic magnetization satisfy the following relations: (i) when t≤0.20 mm, the iron loss deterioration ratio is 85% or less; (ii) when 0.20 mm<t<0.27 mm, the iron loss deterioration ratio is 80% or less; and (iii) when 0.27 mm≤t, the iron loss deterioration ratio is 75% or less. The iron loss deterioration ratio is calculated from ((W.sub.A−W.sub.B)/W.sub.B)×100, where W.sub.A is iron loss under 50 Hz elliptic magnetization of 1.7 T in a rolling direction and 1.0 T in a direction orthogonal to the rolling direction, and W.sub.B is iron loss under 50 Hz alternating magnetization of 1.7 T in the rolling direction.