A transformer unit and a power converter circuit are provided. The transformer unit includes: a first secondary wiring layer including a first secondary winding; a second secondary wiring layer adjacent to the first secondary wiring layer and including a second secondary winding, a first end of the second secondary winding being connected to a first end of the first secondary winding via at least one first via hole; and a plurality of primary wiring layers including a primary winding, the first secondary wiring layer and the second secondary wiring layer being disposed between the plurality of primary wiring layers, wherein at least one of the first via hole is disposed within a projection of the primary winding in the plurality of primary wiring layers.

A single-ended inductor comprises a first partial coil wound in a first direction; and a second partial coil wound in a second direction and adjoined the first partial coil; wherein, the second direction is opposite to the first direction to reduce the coupling of single-ended inductors and peripheral lines and reduce signal interference.

A switching power converter includes a first switching stage, a second switching stage, a coupled inductor, and a boost winding. The coupled inductor includes a first phase winding, a second phase winding, and a magnetic core. The first phase winding is wound at least partially around a first portion of the magnetic core, and the first phase winding is electrically coupled to the first switching stage. The second phase winding is wound at least partially around a second portion of the magnetic core, and the second phase winding is electrically coupled to the second switching stage. The boost winding forms at least one turn such that mutual magnetic flux associated with each of the first and second phase windings flows through the at least one turn.

A robotic inspection system for corrosion detection within external post-tension bridge tendons includes a sensing device. The sensing device is configured to move along a bridge tendon to detect magnetic flux leakage of the bridge tendon as the sensing device moves along the bridge tendon. In addition, the system includes a location device coupled to the sensing device, where the location device is configured to determine the location of the sensing device on the bridge tendon. The system also includes a control station configured to wirelessly interface with the sensing device and the location instrument. The control station is also configured to generate a bridge tendon condition assessment report from the detection of magnetic flux leakage to identify locations and sizes of discontinuities of the bridge tendon.

The invention concerns a core for an inductive element with at least a first side part, a middle part and a second side part, wherein the middle part has a central portion, a first edge portion arranged parallel to the central portion, and a second edge portion arranged parallel to the central portion, wherein the central portion is arranged between the first and second edge portions, wherein at least one plastic component is provided which is provided at least between the central portion and the first edge portion and/or at least between the central portion and the second edge portion, in order to adjust a stray capacitance of the inductive element and influence a secondary magnetic flux of the inductive element.

Disclosed is a transformer capable of minimizing power loss during a transformation process by reducing stray load loss that occurs at a portion connecting low-voltage bushings. The transformer includes an enclosure disposed so as to surround power conversion equipment mounted therein, a pair of low-voltage bushings configured to transform the voltage of power received from a high-voltage bushing disposed on one side of the enclosure and to output the power, and a shielding member disposed near the pair of low-voltage bushings on the enclosure.

Various examples are provided related to mixed material magnetic cores, which can be utilized for shielding of eddy current induced excess losses. In one example, a magnetic core includes a ribbon core and leakage prevention or redirection shielding surrounding at least a portion of the ribbon core. The leakage prevention or redirection shielding can be positioned adjacent to the ribbon core and between the ribbon core and a magnetomotive force (MMF) source such as, e.g., a coil. The leakage prevention or redirection shielding extend beyond the ends of the MMF source and, in some implementations, can extend over the ends of the MMF source. In another example, a magnetic device can include a ribbon core, a MMF and leakage prevention or redirection shielding positioned between the MMF source and the ribbon core.

A coil component includes a body having a first surface and a second surface opposing each other in a thickness direction of the body and including a core formed in the thickness direction; a coil part embedded in the body and including at least one turn around the core; an insulating layer disposed on the first surface of the body; a bonded conductive layer disposed on the insulating layer and having a surface roughness of the first surface which is in contact with the insulating layer greater than a surface roughness of the second surface opposing the first surface of the bonded conductive layer; and external electrodes connected to the coil part and covering the bonded conductive layer.

A device includes a first inductor and a second inductor reversely coupled with the first inductor. The first and second inductors have overlapping windings. The device also includes a housing for the first and second inductor. The housing is filled with a magnetic molding compound.

A power conversion module includes a circuit board and a transformer mounted on the circuit board. The transformer includes a primary winding, a plurality of secondary windings, and a magnetic core assembly. The secondary winding includes a plurality of conductive plates each has a main body, two pins and two intermediate segments. The two pins extends along a first direction and couples to the main body via intermediate segments extending along a second direction; the transformer is electrically connected to the circuit board through the pins; wherein the main body has an opening, and the intermediate segments are positioned at two sides of the opening. The magnetic core assembly includes a middle post, and a coil section of the primary winding and the main bodies of the conductive plates are arranged in a staggered configuration and surround the middle post.