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Flux equalized transformer circuit

Imported: 23 Feb '17 | Published: 22 Oct '02

Ionel Jitaru

USPTO - Utility Patents

Abstract

A transformer group in which a multitude of transformers are used to supply energy to a single load. The transformers are connected in series; in order to assist in providing a “flux equalizing” affect, the invention includes a flux equalizer circuit. The flux equalizer circuit provides a series of flux windings. Each flux winding is associated with a single transformer. The windings are arranged in parallel. In this manner, a balancing of the output of the transformers is obtained; the power output from each transformer is “sensed” by its associated flux winding which is “shared” with the other transformers via their own associated flux winding. Power is process then through the secondary windings, rectifiers, and output filters to a common load.

Description

DRAWINGS IN BRIEF

FIG. 1 is a cross-sectional side view of prior art components packaging.

FIG. 2 is a perspective exploded view of component packaging according to the invention.

FIG. 3A is a top view of the packaging with a detailed section of the magnetic' winding.

FIG. 3B is an enlarged view of a section of FIG. 3A

FIG. 4A is a top view of the packaging with a detailed section of the cooling via.

FIG. 4C is a section of the packaging through the cooling via and through a magnetic element.

FIGS. 4B and 4D are a broken view of the cooling via herein the insulator material penetrates in the cooling via.

FIG. 5A is the top view of the horizontal packaging with airflow cooling.

FIG. 5B is a cross section of the embodiment of FIG.

5A.

FIG. 6 is a top view of the packaging

FIG. 6A is a cross-section of the package with cooling by airflow and cavities for magnetic cores.

FIG. 6B is a cross-section of the package with cooling by airflow and holes for magnetic cores.

FIG. 7A it is a perspective view of the power packages for airflow cooling.

FIG. 7B is a perspective view of the power packages for airflow cooling and additional heating applied to the multilayers circuit board.

FIG. 8 is a cross-section of the packaging connected to the motherboard.

FIG. 9 it is another embodiment of the present invention.

FIG. 10A is a high power magnetics package according to this invention.

FIG. 10B is a cross-section of the magnetic package presented in FIG.

10.

FIG. 11 is an electrical schematic of the preferred embodiment of the multiple transformer using flux equalizing loops.

FIG. 12 is an electrical schematic of an alternative embodiment of the multiple transformer invention in which no central taps have been utilized.

FIG. 13 is an electrical schematic of an embodiment of the multiple transformer invention in which the flux equalizing loops react to electrical flow through multiple power trains.

FIG. 14 is an electrical schematic of an alternative embodiment of the multiple transformer invention.

FIG. 15 is a method of implementing the flux equalizing loops of this invention.

FIG. 16 is an electrical schematic of an embodiment in which the flux equalizing loops are employed also in the output choke.

Claims

1. A flux equalizer circuit, comprising:

2. The flux equalizer circuit according to claim 1, wherein the first transformer has a first primary winding, a first side of the first primary winding being connected to a power source, and a first secondary winding positioned to have an electrical flow induced in the first secondary winding when electrical energy flows through the first primary winding, wherein the second transformer has a second primary winding, a first side of the second primary winding being connected to a power source, and a second side of the second primary winding being connected to a second side of the first primary winding, the flux equalizer circuit further comprising a load, wherein said first and second secondary windings communicate electrical energy to said load.

3. The flux equalizer circuit according to claim 2, further comprising a first rectifier circuit imposed between the first secondary winding and said load, and a second rectifier circuit imposed between the second secondary winding and said load.

4. The flux equalizer circuit according to claim 3, further comprising a first filter element imposed between said first rectifier circuit and said load, and a second filter element imposed between said second rectifier circuit and said load.