CN104157431A - Three-phase transformer with built-in high-frequency inductor - Google Patents
Three-phase transformer with built-in high-frequency inductor Download PDFInfo
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- CN104157431A CN104157431A CN201410434686.5A CN201410434686A CN104157431A CN 104157431 A CN104157431 A CN 104157431A CN 201410434686 A CN201410434686 A CN 201410434686A CN 104157431 A CN104157431 A CN 104157431A
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Abstract
Provided is a three-phase transformer with a built-in high-frequency inductor. An auxiliary core column of the transformer is formed by splicing a plurality of columnar silicon-iron magnetic powder cores. Due to the fact that air gaps of the columnar silicon-iron magnetic powder cores are evenly distributed on the columnar silicon-iron magnetic powder cores, high-frequency loss and high-frequency noise of the inductor can be effectively avoided, and effective work of the transformer can be also ensured at high switching frequency.
Description
Technical field
The present invention relates to transformer technology field, particularly a kind of three-phase transformer of built-in high-frequency inductor.
Background technology
Inversion field, the inductor device that is absolutely necessary.And in a lot of occasions, except inductor, also need the transformer being used in conjunction with inductor.And in inversion field, these two devices are set, and not only cost is high simultaneously, and extremely account for volume, it is very unfavorable that this device for inversion field arranges work.Therefore propose to be wound on two magnetic cores with a coil simultaneously, thus on a device integrated inductor and transformer, cost-saving with this, reduce small product size.
But in the field of inversion at present, the switching frequency of ten KHz left and right is more and more universal, high switching frequency not only makes the noise of inductor larger, and the loss of its magnetic core is also larger, and then transformer is also caused to adverse effect.
Summary of the invention
The three-phase transformer that the object of the invention is to avoid above-mentioned weak point of the prior art and provide a kind of built-in high-frequency inductor, it can avoid the high frequency noise of inductor, the adverse effect that high-frequency loss brings when volume is little.
Object of the present invention is achieved through the following technical solutions:
A kind of three-phase transformer of built-in high-frequency inductor is provided, comprise coil windings, form the main magnetic core in main flux loop and the secondary magnetic core in formation leakage flux loop, described main magnetic core coordinates formation transformer with coil windings, described secondary magnetic core coordinates formation inductor with coil windings, described secondary magnetic core comprises secondary stem stem, be fixed on the secondary upper yoke of described secondary stem stem upper end and be fixed on the secondary lower yoke of described stem stem lower end, described secondary stem stem is spliced by some column iron silica magnetic particle cores, and described secondary upper yoke and secondary lower yoke are by silicon steel or amorphous magnetic material is stacked makes.
Wherein, described coil windings comprises armature winding and secondary winding, and described armature winding is wound in described main magnetic core and secondary magnetic core, and described secondary winding is wound in described main magnetic core.
Wherein, between the adjacent layer of described armature winding, between the adjacent layer of described secondary winding, be respectively arranged with filler strip, so that the adjacent heat dissipation wind channel that forms of described armature winding and secondary winding between layer.
Wherein, inwardly shrink at described filler strip cross section middle part.
Wherein, described column powder core be shaped as flat column or rectangle column.
Wherein, the column iron silica magnetic particle core that described column powder core is even air gap.
Wherein, the magnetic flux density of described secondary upper yoke and secondary lower yoke and the magnetic flux density of described column powder core are roughly the same.
Wherein, described main magnetic core comprises main stem stem, be fixed on the main upper yoke of main stem stem upper end and be fixed on the main lower yoke of main stem stem lower end, and described main stem stem, main upper yoke and main lower yoke have respectively silicon steel to be laminated
Beneficial effect of the present invention: the three-phase transformer that the invention provides a kind of built-in high-frequency inductor, the secondary stem stem of the inductor of this transformer is spliced by some column iron silica magnetic particle cores, its air gap is distributed on column powder core uniformly, can effectively avoid high-frequency loss and the high frequency noise of inductor, under high switching frequency, also can ensure effective work of this device.
Brief description of the drawings
Fig. 1 is the structural representation of the three-phase transformer of a kind of built-in high-frequency inductor of the present invention.
Fig. 2 is stem stem group of a kind of built-in high-frequency inductor of the present invention and the structural representation of coiling winding coil thereon.
Fig. 3 is the structural representation of the main magnetic core of a kind of built-in inductor in high frequency of the present invention.
Fig. 4 is the structural representation of the secondary magnetic core of a kind of built-in inductor in high frequency of the present invention.
In Fig. 1 to Fig. 4, include:
1---main magnetic core, 11---main upper yoke, 12---main lower yoke, 13---main stem stem, 2---secondary magnetic core, 21---secondary upper yoke, 22---secondary lower yoke, 23---secondary stem stem, 24---column iron silica magnetic particle core, 3---secondary winding, 4---armature winding, 5---filler strip.
Embodiment
The invention will be further described with the following Examples.
The embodiment of the transformer of a kind of built-in inductor in high frequency of the present invention, as shown in Figures 1 to 4, comprise: form the main magnetic core 1 in main main flux loop and the secondary magnetic core 2 in formation leakage flux loop, described main magnetic core 1 comprises three main stem stems 13, be fixed on the main upper yoke 11 of main stem stem 13 upper ends and be fixed on the main lower yoke 12 of main stem stem 13 lower ends, and described main stem stem 13, main upper yoke 11 and main lower yoke 12 have respectively silicon steel to be laminated; Described secondary magnetic core 2 comprises three secondary stem stems 23, be fixed on the secondary upper yoke 21 of described secondary stem stem 23 upper ends and be fixed on the secondary lower yoke 22 of described stem stem lower end, described secondary stem stem 23 is spliced by the column iron silica magnetic particle core 24 of some even air gaps, column iron silica magnetic particle core 24 be shaped as flat column or rectangle column, so that splicing, secondary upper yoke 21 and secondary lower yoke 22 are by silicon steel or amorphous magnetic material is stacked makes; Every main stem stem 13 mates a secondary stem stem 23 and forms a stem stem group, in each stem stem group, be arranged with coil windings, described coil windings comprises armature winding 4 and secondary winding 3, described armature winding 4 is wound in described main stem stem 13 and secondary stem stem 23, described secondary winding 3 is wound in described main stem stem 13, be that main magnetic core 1 coordinates formation transformer with coil windings, secondary magnetic core 2 coordinates formation inductor with coil windings.
The secondary stem stem 23 of the inductor of this transformer is spliced by some column iron silica magnetic particle cores 24, therefore its air gap is distributed on column powder core 24 uniformly, can effectively avoid high-frequency loss and the high frequency noise of inductor, under high switching frequency, also can ensure effective work of this device.The secondary magnetic core 2 that it is pointed out that this transformer has only partly used iron silica magnetic particle core, can effectively avoid forming caused low magnetic permeability by powder core completely, the problems such as three-phase magnetic resistance imbalance.
Between the adjacent layer of described armature winding 4, be respectively arranged with filler strip 5 between the adjacent layer of described secondary winding 3, so that the adjacent heat dissipation wind channel that forms between layer of described armature winding 4 and secondary winding 3, inwardly shrink at filler strip 5 cross sections middle parts.Heat dissipation wind channel contributes to fast the heat in coil windings to be derived, the filler strip 58 inside contractions in cross section middle part can effectively reduce the bearing surface of filler strip 58 and winding, in the situation that not affecting winding technique, make the winding face between filler strip 58 and winding have gap, guarantee ventilation and heat between the two.
Further, the magnetic flux density of the magnetic flux density of secondary upper yoke 21 and secondary lower yoke 22 and described column iron silica magnetic particle core 24 is roughly the same.Can make like this performance of silicon steel and column powder core 24 be fully used.
Above embodiment is only in order to illustrate technical scheme of the present invention and feature; its object is to allow person skilled in the art can understand content of the present invention and be implemented; can not limit the scope of the invention with this; equivalent transformation or amendment that all Spirit Essences according to the present invention make, within all should being encompassed in protection scope of the present invention.
Claims (8)
1. the three-phase transformer of a built-in high-frequency inductor, comprise coil windings, form the main magnetic core in main flux loop and the secondary magnetic core in formation leakage flux loop, described main magnetic core coordinates formation transformer with coil windings, described secondary magnetic core coordinates formation inductor with coil windings, it is characterized in that: described secondary magnetic core comprises secondary stem stem, be fixed on the secondary upper yoke and the secondary lower yoke that is fixed on described stem stem lower end of described secondary stem stem upper end, described secondary stem stem is spliced by some column iron silica magnetic particle cores, described secondary upper yoke and secondary lower yoke are by silicon steel or amorphous magnetic material is stacked makes.
2. the three-phase transformer of a kind of built-in high-frequency inductor as claimed in claim 1, it is characterized in that: described coil windings comprises armature winding and secondary winding, described armature winding is wound in described main magnetic core and secondary magnetic core, and described secondary winding is wound in described main magnetic core.
3. the three-phase transformer of a kind of built-in high-frequency inductor as claimed in claim 2, it is characterized in that: between the adjacent layer of described armature winding, be respectively arranged with filler strip between the adjacent layer of described secondary winding, so that the adjacent heat dissipation wind channel that forms of described armature winding and secondary winding between layer.
4. the three-phase transformer of a kind of built-in high-frequency inductor as claimed in claim 3, is characterized in that: inwardly shrink at described filler strip cross section middle part.
5. the three-phase transformer of a kind of built-in high-frequency inductor as claimed in claim 1, is characterized in that: described column powder core be shaped as flat column or rectangle column.
6. the three-phase transformer of a kind of built-in high-frequency inductor as claimed in claim 1, is characterized in that: the column iron silica magnetic particle core that described column powder core is even air gap.
7. the three-phase transformer of a kind of built-in high-frequency inductor as claimed in claim 1, is characterized in that: the magnetic flux density of the magnetic flux density of described secondary upper yoke and secondary lower yoke and described column iron silica magnetic particle core is roughly the same.
8. the three-phase transformer of a kind of built-in high-frequency inductor as claimed in claim 1, it is characterized in that: described main magnetic core comprises main stem stem, be fixed on the main upper yoke of main stem stem upper end and be fixed on the main lower yoke of main stem stem lower end, and described main stem stem, main upper yoke and main lower yoke have respectively silicon steel to be laminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410434686.5A CN104157431A (en) | 2014-08-29 | 2014-08-29 | Three-phase transformer with built-in high-frequency inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410434686.5A CN104157431A (en) | 2014-08-29 | 2014-08-29 | Three-phase transformer with built-in high-frequency inductor |
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| CN104157431A true CN104157431A (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410434686.5A Pending CN104157431A (en) | 2014-08-29 | 2014-08-29 | Three-phase transformer with built-in high-frequency inductor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390255A (en) * | 2015-11-05 | 2016-03-09 | 苏州腾冉电气设备股份有限公司 | Leakage transformer coil |
| CN105390256A (en) * | 2015-11-05 | 2016-03-09 | 苏州腾冉电气设备股份有限公司 | Leakage transformer |
| CN105390242A (en) * | 2015-11-05 | 2016-03-09 | 苏州腾冉电气设备股份有限公司 | Secondary iron core of leakage transformer |
| CN112567488A (en) * | 2018-08-28 | 2021-03-26 | 欧姆龙株式会社 | Transformer and power conversion device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201112055Y (en) * | 2007-09-11 | 2008-09-10 | 中电电气集团有限公司 | Dry transformer |
| CN201210442Y (en) * | 2008-05-09 | 2009-03-18 | 广东科旺电源设备有限公司 | Novel high resistance self-coupled transformer |
| CN201877254U (en) * | 2010-11-11 | 2011-06-22 | 钱旭 | High-impedance core transformer |
| CN202487347U (en) * | 2012-03-26 | 2012-10-10 | 艾默生网络能源有限公司 | Magnetic core structure and electric reactor with same |
| CN202650806U (en) * | 2012-05-18 | 2013-01-02 | 常州市光辉变压器制造有限公司 | Dry type transformer coil and iron core assembling structure |
-
2014
- 2014-08-29 CN CN201410434686.5A patent/CN104157431A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201112055Y (en) * | 2007-09-11 | 2008-09-10 | 中电电气集团有限公司 | Dry transformer |
| CN201210442Y (en) * | 2008-05-09 | 2009-03-18 | 广东科旺电源设备有限公司 | Novel high resistance self-coupled transformer |
| CN201877254U (en) * | 2010-11-11 | 2011-06-22 | 钱旭 | High-impedance core transformer |
| CN202487347U (en) * | 2012-03-26 | 2012-10-10 | 艾默生网络能源有限公司 | Magnetic core structure and electric reactor with same |
| CN202650806U (en) * | 2012-05-18 | 2013-01-02 | 常州市光辉变压器制造有限公司 | Dry type transformer coil and iron core assembling structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390255A (en) * | 2015-11-05 | 2016-03-09 | 苏州腾冉电气设备股份有限公司 | Leakage transformer coil |
| CN105390256A (en) * | 2015-11-05 | 2016-03-09 | 苏州腾冉电气设备股份有限公司 | Leakage transformer |
| CN105390242A (en) * | 2015-11-05 | 2016-03-09 | 苏州腾冉电气设备股份有限公司 | Secondary iron core of leakage transformer |
| CN105390256B (en) * | 2015-11-05 | 2017-12-22 | 苏州腾冉电气设备股份有限公司 | A kind of leakage transformer |
| CN112567488A (en) * | 2018-08-28 | 2021-03-26 | 欧姆龙株式会社 | Transformer and power conversion device |
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Application publication date: 20141119 |