The transformer has an iron core provided with iron core segments. A primary winding is provided with multiple primary winding coils. Secondary windings are provided with multiple secondary winding coils. The primary and secondary winding coils form a winding package with front sides. The secondary and primary winding coils are distributed adjacent to each other on the iron core segments. The secondary winding coils are twisted relative to the primary winding coils around 90 degrees. The iron core segments are formed from a soft magnetic material. An independent claim is also included for a method for attaching windings at an iron core of a transformer.
F.32 International patent
COBISS.SI-ID: 21534742The device has a u-shaped measuring bridge formed such that the measuring bridge is arranged at a magnetic core of a transformer and bridges a part of the magnetic core. A measuring coil detects an induced voltage and is arranged at the measuring bridge. The measuring coil is formed in sections as a winding evenly distributed over measuring bridge length. The measuring bridge is abutted at the magnetic core during execution of measurement for detection of saturation of the magnetic core of the transformer. Independent claims are also included a method for detection of saturation of a magnetic core of a transformer.
F.32 International patent
COBISS.SI-ID: 21657366Technical problem solved by this invention is to provide a homogeneous distribution of the electric current in the windings of the transformer and the connecting elements, providing a sufficiently large surface on the side of the secondary winding, which is intended to connect an output rectifier and the connection of cooling, as well as to reduce the length of the straight connecting elements, which can be achieved by a proposed partial overlap of the primary and the secondary windings in the area of the so-called winding heads.
F.32 International patent
COBISS.SI-ID: 22140694The invention solves the technical problem of the too long connections between the output from the secondary winding and an output rectifier also reducing the need for intensive cooling of rectifier means by integrating the rectifier means in the form of power diodes or MOSFET transistors into the parts of the secondary winding, where the arrangement is not more complex compared to the conventional solutions, however, it enables substantially shorter output connections. The proposed modified structure changes the electrical parameters of the welding system in such a way that, despite the required unchanged maximum value of the welding current and the use of rectifier means in the form of power diodes or MOSFET transistors, it is possible to further reduce electrical losses in secondary connections that become shorter, while simplifying also the cooling of rectifier means in the form of power diode or MOSFET transistors, which, with the proposed integration of secondary windings with output rectifier means in the form of power diode or MOSFET transistors, is cooled indirectly simultaneously with the cooling of the secondary winding. The proposed embodiment allows a significant increase in the power density of the welding transformer with an output rectifier. Because of the change in the electrical properties of the secondary part of the system, it is also possible to operate at slightly higher frequencies than 1 kHz, without parallelizing the secondary winding.
F.32 International patent
COBISS.SI-ID: 22140950The invention relates to a transformer arrangement, comprising a primary coil comprising at least one primary winding layer, each primary winding layer comprising a plurality of primary windings wound around the transformer axis in a respective primary winding layer distance range from the transformer axis, a secondary coil comprising at least one secondary winding layer, each secondary winding layer comprising at least one secondary winding wound around the transformer axis in a respective secondary winding layer distance range from the transformer axis, wherein the at least one primary winding layer distance range and the at least one secondary winding layer distance range each extend perpendicular to the transformer axis and are not overlapping each other, and wherein the at least one primary winding layer and the at least one secondary winding layer are arranged to overlap in a length section along the transformer axis.
F.32 International patent
COBISS.SI-ID: 19680278