H01F30/04

Electrical load driving apparatus

An electrical load driving apparatus, comprising a current distribution apparatus having a power source arranged to deliver an input current into a plurality of branches such that the input current is distributed into a plurality of individual branch currents, wherein each of the plurality of branches includes an inductive arrangement arranged to form an inductive coupling with an associated inductive arrangement of at least one other associated branch, and a plurality of output loads connect to each of the associated branches of the current distribution apparatus.

CURRENT TRANSFORMER

A current transformer includes a closed magnetic circuit and a secondary winding. A first part of the closed magnetic circuit completely surrounds a primary conductor, and a second part of the closed magnetic circuit forms the secondary winding. The second part of the closed magnetic circuit serves as a magnetic core of the secondary winding. The closed magnetic circuit forms a plurality of branch magnetic circuits at the second part, and a secondary winding is formed on each branch magnetic circuit. Each branch magnetic circuit serves as a magnetic core of a corresponding secondary winding. Each secondary winding is staggered with each other in at least one of the length, the height and the thickness.

High voltage switch with isolated power

A high voltage switch comprising: a high voltage power supply providing power greater than about 5 kV; a control voltage power source; a plurality of switch modules arranged in series with respect to each other each of the plurality of switch modules configured to switch power from the high voltage power supply, and an output configured to output a pulsed output signal having a voltage greater than the rating of any switch of the plurality of switch modules, a pulse width less than 2 μs, and at a pulse frequency greater than 10 kHz.

PLASMA PROCESSING APPARATUS
20170330772 · 2017-11-16 ·

A capacitively-coupled plasma processing apparatus includes: at least one chamber body providing chambers separated from each other; upper electrodes respectively installed in upper spaces within the chambers; lower electrodes respectively installed in lower spaces within the chambers; a high frequency power supply; a transformer including a primary coil electrically connected to the high frequency power supply, and secondary coils each of which coils having a first end and a second end; first condensers respectively connected between each of the first ends of the secondary coils and the upper electrodes; and second condensers respectively connected between each of the second ends of the secondary coils and the lower electrodes. The primary coil extends around a central axis. The secondary coils are configured to be coaxially disposed with respect to the primary coil. A self-inductance of each of the secondary coils is smaller than that of the primary coil.

Continuous load high power flyback converter

A continuous load high-power flyback converter includes a first transformer having a first primary winding, a first secondary winding, and a first auxiliary winding, and a second transformer having a second primary winding, a second secondary winding, and a second auxiliary winding. The first primary winding and the second primary winding are connected in parallel between a power source and a transistor. The first secondary winding and the second secondary winding are connected in series to a diode and form an output of the continuous load high-power flyback converter. A load is connected between the output and ground. The first auxiliary winding and the second auxiliary winding are connected in series, and used to generate a control signal for the transistor. Connecting the primary windings in parallel and the secondary windings in series reduces the reflected voltage on the transistor for a given output voltage.

TRANSFORMER AND POWER CONVERTER
20230274873 · 2023-08-31 ·

A transformer includes a primary winding, a feedback winding, and a non-feedback winding having substantially equal winding widths in an axial direction of a bobbin.

Inductive power distribution in a vehicle

In one aspect of the present disclosure, an induction hub is disclosed for use in powering components in a vehicle. The induction hub includes a source coil; first and second receiver coils having first and second conductive portions, respectively; and at least one isolation member that is positioned between the first and second conductive portions. The receiver coils are separated from the source coil such that, upon being energized by a power source, the source coil creates an induced electromagnetic field (EMF) and an electrical current in the receiver coils, which are in electrical communication with at least one component in the vehicle to thereby deliver power from the receiver coils to the at least one component. The at least one isolation member includes a material that is electrically nonconductive and electromagnetically permeable so as to physically and electrically separate the receiver coils without impacting the induced EMF.

Power supply device, charging system and charge scheduling method

The power supply device includes a first winding, a second winding, a third winding, a fourth winding, a first AC-DC conversion unit, a second AC-DC conversion unit, a first power supply terminal and a second power supply terminal. The first and second windings are disposed on a secondary side of a multi-pulse transformer, and coupled to an input of the first AC-DC conversion unit. The first power supply terminal is coupled to an output of the first AC-DC conversion unit. The third and fourth windings are disposed on the secondary side of the multi-pulse transformer, and coupled to an input of the second AC-DC conversion unit. The second power supply terminal is coupled to an output of the second AC-DC conversion unit. Phases of output voltages of the first winding, the third winding, the second winding and the fourth winding are successively shifted left or successively shifted right for 15°.

Superconducting magnet engine
11387741 · 2022-07-12 · ·

Apparatus and associated methods relate to a Meissner Engine Regulator (MER) that includes a superconducting inductive element (SCIE) supplying a secondary winding coupled to recirculate excess energy from the SCIE core to a feedback winding controlled to regulate the SCIE magnetic field strength to be substantially at or below a critical magnetic field strength (H.sub.C). In an illustrative example, H.sub.c may be the maximum field strength to obtain the Meissner effect in the SCIE. In some examples, the SCIE may be wound with n-filar windings. The SCIE may further include a first primary electrically coupled to and powered by a DC-to-AC power inverter, for example. The secondary winding may operate to remove excess energy from the magnetic field in the SCIE, for example, and store it in a capacitor. The SCIE may be supercooled, with liquid nitrogen, for example, such that the MER reaches electrical efficiencies approaching 100%.

Superconducting magnet engine
11387741 · 2022-07-12 · ·

Apparatus and associated methods relate to a Meissner Engine Regulator (MER) that includes a superconducting inductive element (SCIE) supplying a secondary winding coupled to recirculate excess energy from the SCIE core to a feedback winding controlled to regulate the SCIE magnetic field strength to be substantially at or below a critical magnetic field strength (H.sub.C). In an illustrative example, H.sub.c may be the maximum field strength to obtain the Meissner effect in the SCIE. In some examples, the SCIE may be wound with n-filar windings. The SCIE may further include a first primary electrically coupled to and powered by a DC-to-AC power inverter, for example. The secondary winding may operate to remove excess energy from the magnetic field in the SCIE, for example, and store it in a capacitor. The SCIE may be supercooled, with liquid nitrogen, for example, such that the MER reaches electrical efficiencies approaching 100%.