CN201877254U

CN201877254U - High-impedance core transformer

Info

Publication number: CN201877254U
Application number: CN2010206017713U
Authority: CN
Inventors: 钱旭
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-11
Filing date: 2010-11-11
Publication date: 2011-06-22
Anticipated expiration: 2020-11-11

Abstract

The utility model discloses a high-impedance core transformer, which comprises a core, a flux leakage core, a primary coil, a secondary coil and a coil, the main core comprises an upper main core yoke, a main core limb and a lower main core yoke, and the flux leakage core comprises an upper flux leakage core yoke, a flux leakage core limb and a lower flux leakage core yoke. The primary coil and the secondary coil are wound between the main core limb and the flux leakage core limb, and the coil is wound on the primary coil, the secondary coil and the flux leakage core limb. The flux leakage core limb consists of multiple sections of irons, between which clearances are reserved. Applied in an inverter system adopting the sinusoidal pulse width modulation (SPWM) technology, the high-impedance core transformer has the double effects of filtration and isolation, and medium-small capacity and low-voltage transformers can effectively realize high impedance, little spatial flux leakage, high electromagnetic compatibility, small size, light weight, low cost, supplementary transformer loss, uniform temperature and little electromagnetic noise.

Description

A kind of high impedance appendiron core transformer

Technical field

The utility model relates to a kind of transformer, particularly a kind of high impedance appendiron core transformer.

Background technology

Along with the extensive application of adopting SPWM pulse width modulating technology inverter product, what its power output end all adopted is the mode of exporting through isolating transformer again after the L-C filtering, if adopt the high impedance isolating transformer then can cancel inductance in the L-C filter circuit, effectively reduce product cost, reduce volumetric spaces, reduce the pollution of noise and space leakage field.But common middle-size and small-size power and low-voltage isolating transformer will be accomplished high impedance and be difficult to, and at first in order to realize high anti-resistance, just must increase core volume, and volume strengthens and can cause cost to rise again; Next is that the space leakage field is big, electromagnetic pollution is serious; The transformer supplementary load loss are big, temperature rise is inhomogeneous because high leakage field causes besides.

The utility model content

For solve existing middle-size and small-size power and low-voltage isolating transformer for realize that high anti-resistance will occur that volume is big, cost is high, the space leakage field is big, electromagnetic pollution is seriously measured, high leakage field causes that the transformer supplementary load loss are big, the uneven technical problem of temperature rise, the utility model provides a kind of high impedance appendiron core transformer that a kind of volume is little, in light weight, cost is low, the transformer supplementary load loss are little, temperature is even, electromagnetic pollution is little.

In order to realize above-mentioned technique effect, the technical solution of the utility model is: a kind of high impedance appendiron core transformer, comprise main iron core and the level circle that forms by the lead coiling, described main iron core from top to bottom is divided into the main iron core upper yoke, the main iron core stem, the main iron core lower yoke, described level circle is around the coiling of main iron core stem, it also comprises a leakage field iron core, the upper yoke cushion block, lower yoke cushion block and the coil that forms by the lead coiling, described leakage field iron core from top to bottom is divided into leakage field iron core upper yoke, leakage field iron core stem, leakage field iron core lower yoke, leakage field iron core and main iron core are set up in parallel, separate by the upper yoke cushion block between described leakage field iron core upper yoke and the main iron core upper yoke, separate by the level circle between described leakage field iron core stem and the main iron core stem, separate described coil encircling level circle and the coiling of leakage field iron core stem between described leakage field iron core lower yoke and the main iron core lower yoke by the lower yoke cushion block.

Above-mentioned a kind of high impedance appendiron core transformer, its described leakage field iron core stem is made up of the multistage iron core from top to bottom, leaves the space between each iron leg core.

Above-mentioned a kind of high impedance appendiron core transformer, its described main iron core is to be formed by stacking by the multilayer high permeability material.

Above-mentioned a kind of high impedance appendiron core transformer, its described leakage field iron core is to be formed by stacking by the multilayer high permeability material.

Above-mentioned a kind of high impedance appendiron core transformer, its described high permeability material is a silicon steel sheet.

Technique effect of the present utility model is, transformer of the present utility model is when work, main flux passes through main iron core, leakage flux is by the leakage field iron core, and two kinds of magnetic fluxs all are the iron core closed-loop paths, so the space magnetic flux is very little, the supplementary load loss of electromagnetic pollution and coil have effectively been eliminated, intensification amplitude when making transformer work is effectively controlled, and simultaneously because the leakage field iron core is the adjustable iron core of segmentation, can require to reach requirement to adjust the leakage field iron core air gap according to inverter system filtered electrical sensibility reciprocal.Adopt transformer of the present utility model, can in SPWM pulse width modulating technology inverter system, play the bilayer effect of filtering and isolation simultaneously, realized high impedance at middle-size and small-size capacity and low-voltage transformer; The space leakage field is little, and Electro Magnetic Compatibility is good; Volume compare volume-diminished with the appendiron core transformer of anti-resistance more than 20%, in light weight, cost is low; The transformer supplementary load loss are little, temperature is even; Electromagnetic noise is little.

The utility model is described in further detail below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Wherein 1 is the main iron core upper yoke, and 2 is the main iron core stem, and 3 is the main iron core lower yoke, and 4 is leakage field iron core upper yoke, and 5 is leakage field iron core stem, and 6 is leakage field iron core lower yoke, and 7 is the level circle, and 8 is coil, and 9 is the upper yoke cushion block, and 10 is the lower yoke cushion block, and 11 is the space.

Embodiment

Referring to Fig. 1, the utility model product comprises main iron core and leakage field iron core two parts, main iron core is made up of main iron core upper yoke 1, main iron core stem 2, main iron core lower yoke 3, and the leakage field iron core is made up of leakage field iron core upper yoke 4, leakage field iron core stem 5, leakage field iron core lower yoke 6.By upper yoke cushion block 9 separately, separate by lower yoke cushion block 10 between main iron core lower yoke 3 and the leakage field iron core lower yoke 6 between main iron core upper yoke 1 and the leakage field iron core upper yoke 4.Level circle 7 is wound between main iron core stem 2 and the leakage field iron core stem 5, and coil 8 is wound on the skin of level circle 7 and leakage field iron core stem 5.Main iron core and leakage field iron core all are to be formed by stacking by the multilayer high permeability material, and the high permeability material that this embodiment selects for use is a silicon steel sheet.Leakage field iron core stem is formed for the multistage iron core, leaves the space between each iron leg core, and the length of iron core can be adjusted as required, to reserve the space of different length, adapts to the needs of various actual conditions, can realize high anti-resistance under the prerequisite of small size.

Claims

1. high impedance appendiron core transformer, comprise main iron core and the level circle (7) that forms by the lead coiling, described main iron core from top to bottom is divided into main iron core upper yoke (1), main iron core stem (2), main iron core lower yoke (3), described level circle (7) is around main iron core stem (2) coiling, it is characterized in that, also comprise a leakage field iron core, upper yoke cushion block (9), lower yoke cushion block (10) and the coil (8) that forms by the lead coiling, described leakage field iron core from top to bottom is divided into leakage field iron core upper yoke (4), leakage field iron core stem (5), leakage field iron core lower yoke (6), leakage field iron core and main iron core are set up in parallel, separate by upper yoke cushion block (9) between described leakage field iron core upper yoke (4) and the main iron core upper yoke (1), separate by level circle (7) between described leakage field iron core stem (5) and the main iron core stem (2), separated by lower yoke cushion block (10) between described leakage field iron core lower yoke (6) and the main iron core lower yoke (3), described coil (8) is around level circle (7) and leakage field iron core stem (5) coiling.

2. a kind of high impedance appendiron core transformer according to claim 1 is characterized in that, described leakage field iron core stem is made up of the multistage iron core from top to bottom, leaves space (11) between each iron leg core.

3. a kind of high impedance appendiron core transformer according to claim 1 is characterized in that described main iron core is to be formed by stacking by the multilayer high permeability material.

4. a kind of high impedance appendiron core transformer according to claim 1 is characterized in that described leakage field iron core is to be formed by stacking by the multilayer high permeability material.

5. according to claim 3 or 4 described a kind of high impedance appendiron core transformers, it is characterized in that described high permeability material is a silicon steel sheet.