Abstract:
An electromagnetic induction device (1) comprises a magnetic core (2) having a limb (3) and at least one winding (4) wound around the limb (3). The winding (4) comprises: an electrical conductor forming a plurality of radially overlapping layers (6', 6",... 6 n ) around an axis (A); an electrically insulating material (7) positioned between the radially overlapping layers (6', 6",... 6 n ) of the electrical conductor; at least one magnetic material end-fill (9) positioned at at least one axial end of the winding (4) in electrical contact with the layers (6', 6",... 6 n ) of the electrical conductor so to be at the same electrical potential with the latter.
Abstract:
The present invention relates to a magnetic shunt assembly (1) for magnetic shielding of a power device, in particular for an electrical power transformer, comprising a plurality of joined ferromagnetic sheets (2) and a plurality of bonding layers (3) for bonding subsequent sheets (2', 2'') of said plurality of ferromagnetic sheets to form an integral assembly.
Abstract:
An electric device (1) comprises a portion generating heat and a portion for dissipating said generated heat by heat exchange with a fluid, wherein said heat dissipating portion comprises means for generating a turbulent flow in the fluid.
Abstract:
The present invention relates to an electrical transformer comprising a core and one or more winding assemblies mounted to the core, each winding assembly comprising a low voltage winding (2) and a high voltage winding (3), wherein the high voltage winding (3) comprises a first winding section (4) and a second winding section (5) arranged consecutively in the axial direction (A) of the high voltage winding (3) and connected through an electrical junction (6), the first (4) and the second (5) winding sections comprising insulated conductors (7) in multilayer arrangements wherein a plurality of conductor layers (9', 9''...) each having one or more turns (16', 16''...) in said axial direction (A) are wounded on top of one another in the radial direction (R) of the high voltage winding (3), each of the first (3) and second (4) winding sections having a radially external terminal (11, 13) and a radially internal terminal (12, 14), wherein: - the first winding section radially internal terminal (12) is connected to the second winding section radially external terminal (13) through said electrical junction (6); - the first winding section radially external terminal (11) is the high voltage winding (3) entrance; - the second winding section radially internal terminal (14) is the high voltage winding exit.
Abstract:
The present disclosure relates to a method of manufacturing a cable for a winding of an electromagnetic induction device. The method comprises a) providing a layer of magnetic material onto a conductor.
Abstract:
A continuously transposed cable CTC (1), extending according to a longitudinal development direction (L) and having two opposite longitudinal ends (2, 3), comprises a plurality of strands (4) arranged so to form at least a first (5) and a second (6) adjacent stacks, each extending along the longitudinal development direction (L), wherein said at least first (5) and second (6) stacks form a longitudinal interface (16) therebetween. The CTC cable (1) further comprises one or more optical fibers (12) positioned at the interface (16) between the first (5) and the second (6) stacks. 10 A winding of an electromagnetic induction device, such as a transformer, can be obtained by winding said CTC cable (1).
Abstract:
The present disclosure relates to an electromagnetic induction device (1) comprising: a magnetic core (5) having a limb (7), a foil winding (9-3) wound around the limb (7), wherein the foil winding (9-3) has a first end portion (17) at a first axial end of the foil winding (9-3) and a second end portion (19) at a second axial end, opposite to the first axial end, of the foil winding (9-3), wherein each of the first end portion (17) and the second end portion (19) of the foil winding (9-3) is provided with cut-outs (21) along the circumference of the foil winding (9-3).
Abstract:
The present invention relates to an electrical transformer comprising a core and one or more winding assemblies mounted to the core, each winding assembly comprising a low voltage winding (2) and a high voltage winding (3), wherein the high voltage winding (3) comprises a first winding section (4) and a second winding section (5) arranged consecutively in the axial direction (A) of the high voltage winding (3) and connected through an electrical junction (6), the first (4) and the second (5) winding sections comprising insulated conductors (7) in multilayer arrangements wherein a plurality of conductor layers (9', 9''...) each having one or more turns (16', 16''...) in said axial direction (A) are wounded on top of one another in the radial direction (R) of the high voltage winding (3), each of the first (3) and second (4) winding sections having a radially external terminal (11, 13) and a radially internal terminal (12, 14), wherein: - the first winding section radially internal terminal (12) is connected to the second winding section radially external terminal (13) through said electrical junction (6); - the first winding section radially external terminal (11) is the high voltage winding (3) entrance; - the second winding section radially internal terminal (14) is the high voltage winding exit.
Abstract:
The present invention relates to gas-insulated electrical apparatuses, in particular gas-insulated transformers or reactors, comprising a housing enclosing an interior space, in which an electrical component comprising a winding is arranged, at least a portion of the interior space defining an insulation space which is filled with an insulation fluid electrically insulating at least a part of the electrical component from the housing. According to the invention, the electrical apparatus further comprises a cooling element comprising a condenser, an evaporator and a cooling fluid to be circulated between the condenser and the evaporator. The evaporator is designed such that at least a part of the electric component is immersed in the cooling fluid in its liquid state, thus being in direct contact with the cooling fluid.