Abstract:
An electrical protection device is provided. The device can be removably attached to or mounted inside of a power source, such as a vehicle, e.g., automobile, battery and can employ a replaceable fuse element. The device includes an overcurrent protection element, such as a fuse element, and provides any one or more of the following types of electrical protection: (i) overcurrent protection; (ii) accident or catastrophic event power cutout protection; and (iii) load dump protection. The system is configurable to protect certain vehicle electrical components from an overcurrent and allow others to operate independent of the overcurrent protection. Systems and methods employing the protection device are also illustrated and discussed.
Abstract:
The invention relates to a high-quality, high-temperature superconductor (HTS) inductor (2), in particular for a mobile application. Said inductor contains a ferromagnetic body (3) that conducts a magnetic flux and consists of at least one central core limb (4), two lateral magnetic return limbs (5, 6) running parallel to the central limb and two yoke limbs (7, 8) that magnetically bridge the core limb and the magnetic return limbs. The core limb (4) is surrounded by an HTS winding (9) to be cooled, the current supply lines (10, 11) of said winding penetrating one of the yoke limbs (7) in the vicinity of the cross-sectional area (F) of the adjacent winding (9). The end faces (9a, 9a') of the winding (9) extend almost as far as the respective yoke limb (7, 8).
Abstract:
There is illustrated the assembly of a dual inductor (1) on to a printed circuit board (2). A printed circuit board (2) has a through hole (3). Then the first winding (5), formed from a stamping, is mounted across the hole (3). Then, the first winding (5) is connected to the first face (7) of the PCB (2). Then, a core assembly (10) is inserted into the, hole (3) from the direction of a second face (8) of the PCB (2). Then, at some stage, for example as shown, the second winding (6) is inserted into the core assembly (10) and affixed to the bottom face (8) of the PCB (2).
Abstract:
An integrated magnetic assembly that allows the primary and secondary windings of a transformer and a separate inductor winding to be integrated on a unitary magnetic structure is disclosed. The unitary magnetic structure includes first, second, and third legs that are physically connected and magnetically coupled. The primary and secondary windings of the transformer can be formed on the third leg of the unitary magnetic structure. Alternatively, the primary and secondary windings can be split between the first and second legs. Thus, the primary winding includes first and second primary windings disposed on the first and second legs and the secondary winding includes first and second secondary windings disposed on the first and second legs. The inductor winding may also be formed either on the third leg or it may split into first and second inductor windings and disposed on the first and second legs. In addition, one or more legs may include an energy storage component such as an air gap. This integration of the primary and secondary windings and the inductor winding on the unitary magnetic structure advantageously decouples the inductor function from the transformer function and allows the more optimal design of both the inductor and the transformer. The unitary magnetic structure may be coupled to a full bridge, a half bridge, or a push pull voltage input source to form a DC-DC converter.
Abstract:
A magnetic core is used for an open magnetic path, and this open magnetic core has a permanent magnet disposed on at least one magnetic path end of a magnetic body having soft magnetic characteristics which forms a magnetic path A coil component comprises this magnetic core and has at least one or more windings of one or more turns around the magnetic core where a permanent magnet is disposed on at least one magnetic path end of a magnetic body having soft magnetic characteristics. A power source circuit comprises the coil component and is so constituted that the polarity of a field impressed on the magnetic body of the soft magnetic characteristics generated by an excitation current flowing by the impressing of an input voltage on the windings mounted around the coil component may be opposite to the polarity of a field impressed on the magnetic body of the soft magnetic characteristics by the permanent magnet.
Abstract:
The invention relates to a current limiting arrangement for limiting a current in an electrical power system, which current limiting arrangement, comprises an induction winding (3), surrounding a magnetic flux circuit (2) comprising a ferromagnetic or semi-ferromagnetic material, which material exhibits a residual magnetic field after a first current limiting effort. In accordance with the invention, the magnetic flux circuit is divided into two flux-circuit parts (13, 14), each comprising a portion (15, 16) of said ferromagnetic or semi-ferromagnetic material. The induction winding (3) is divided into two series-connected winding parts (11, 12), each surrounding one of the flux-circuit parts (13, 14). A circuit-changing member (17) is arranged to reverse the direction of the residual magnetic field in one of said portions relative to the magnetic field generated by the current in the winding part associated with said portion, said reversal taking place between two consecutive current limiting efforts in the current limiting arrangement. The invention also relates to an electrical power system comprising such a current limiting arrangement, as well as employment of such an arrangement.
Abstract:
A reactance coil (1) has an annular core (2) on which reactance coils are wound. Said reactance coils (3) are divided up into coil sectors (4) that are separated from each other by means of gaps (5) in the windings. The gaps (5) in the windings reduce reactance coil (3) capacity and the reactance coils (3) have resonances with higher maximum values for impedance and greater bandwidths.
Abstract:
The invention relates to a radio interference suppression choke, comprising a connection wire (1) consisting of an electroconductive and heat conductive non-ferromagnetic first alloy and a strip-wound magnetic core (2) consisting of a ferromagnetic second alloy and comprising a thin strip wound around the connection wire (1) to form a coil and connected to said connection wire (1) at the ends with a positive fit. In addition to enabling automatiseable further processing, the inventive radio interference suppression choke provides optimal thermal contact of the strip-wound magnetic core with the printed circuit board via the connection wire which is configured as a current-carrying conductor. This enables any excess temperature arising in the strip-wound magnetic core to be reduced to a more suitable level for the alloys used and consequently drastically reduces the problem of ageing which is e-functionally related to temperature.