CN104867662A - Novel electric reactor - Google Patents
Novel electric reactor Download PDFInfo
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- CN104867662A CN104867662A CN201510267839.6A CN201510267839A CN104867662A CN 104867662 A CN104867662 A CN 104867662A CN 201510267839 A CN201510267839 A CN 201510267839A CN 104867662 A CN104867662 A CN 104867662A
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- iron core
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Abstract
The invention discloses a novel electric reactor which comprises an iron core, a coil, angle brace bars, bearing bases, stay bolts and cushion blocks. The iron core, the coil, the angle brace bars, the bearing bases, the stay bolts and the cushion blocks form a whole structure through vacuum pressure paint immersing. The coil winds around the iron core. The iron core is a zero-clearance yoke-free iron core. The two ends of the iron core extend out of the end of the coil and are provided with center penetrating holes respectively, wherein the center penetrating holes penetrate through the stacking thickness of the whole iron core. The number of the angle brace bars is at least four. The angle brace bars are arranged between the iron core and the coil and uniformly arranged in the peripheral direction of the iron core. The number of the bearing bases is two. The two bearing bases are located at the two ends of the iron core respectively. The cushion blocks are made of insulating materials and located between the iron core and the bearing bases. The stay bolts penetrate through the center penetrating holes and the cushion blocks and are fixedly connected with the bearing bases. The novel electric reactor has the advantages of being small in weight, small in size, low in noise, small in leakage flux, good in vibration resistance and the like.
Description
Technical field
The present invention relates to a kind of reactor, especially relate to a kind of Novel reactor being applied to inverter in field of track traffic.
Background technology
Reactor is a kind of device being used to provide inductance, widely uses in Circuits System.According to the difference of magnetic structure, reactor is broadly divided into three major types usually:
Air core reactor, the i.e. reactor of the inner ferromagnetic material all not containing control magnetic flux of winding;
Iron-core reactor, namely winding inside is provided with the reactor of iron core, and at present, with regard to being applied to the reactor of inverter in field of track traffic, most iron core all includes some air gaps;
Magnetism-Screened Air-core Reactor, namely winding inside is not containing any ferromagnetic material, but be furnished with the reactor of the ferromagnetic material controlling magnetic flux in outside, and the ferromagnetic material of its peripheral, is namely referred to as magnetic screen.
Above-mentioned all kinds of reactor, in leakage field, noise, the inductance linearity, weight and volume etc., all has respective feature, also has the deficiency (see table 1) that cannot avoid.
| Project | Air core reactor | Magnetism-Screened Air-core Reactor | Iron core reactor |
| Weight | Greatly | Greatly | In |
| Volume | Greatly | Greatly | In |
| Noise | Low | In | High |
| Leakage field | Greatly | Minimum | Little |
| The inductance linearity | Inductance is invariable | Excellent | Poor |
| Iron core overlapping technique | / | More complicated | Very complicated |
| Packaging technology | Simply | Very complicated | More complicated |
| Thermal diffusivity | Excellent | Difference | In |
The existing various reactor performance comparison of table 1
In field of track traffic, reactor is one of core component of locomotive auxiliary converter as magnetic device, and its performance index the most directly have influence on the performance of whole electric drive system.For electric drive for locomotive system, for the consideration to factors such as locomotive weight, running environment, reliabilities, especially be applied in the locomotive of large span, long distance running, reactor requires lightweight, miniaturization, low noise usually, leakage field is little, vibration resistance is good, good weatherability.But as shown in table 1, reactor general at present is often difficult to all meet these requirements, is applied in track traffic power supply and respectively has pluses and minuses, always blemish in an otherwise perfect thing.
Authorization Notice No. is a kind of DC flat-wave reactor in the patent document of CN 204010962 U discloses, and under proposing a kind of prerequisite not changing iron-core reactor magnetic circuit model, reduces the process that leakage field reduces noise for DC flat-wave reactor.This reactor comprises iron core column, upper yoke, lower yoke and coil, iron core column forms by utilizing epoxy resin to be bondd with each iron core cake and superpose compacting by air gap plate, coil winding forms coil on the insulating cylinder of ellipse, coil is socketed in iron core column, Double layer iron yoke is all made up of base plate and protuberance, and iron core column connects the protuberance of upper and lower iron yoke.As shown in Figure 1, 2, this reactor is by designing the protuberance on Double layer iron yoke, by dislocation coil inside in the air gap of iron yoke and stem stem intersection, and the stem stem crimping each section of cross section being scribbled epoxy glue is compressed by pressing machine, finally dry or drying forming, to guarantee the closed assembly quality of iron core column, thus reduce noise.
But the flap-type kind unshakable in one's determination in the program is many, needs special pressure equipment to compress, finally dry again or dry after lamination gluing, stacking technique unshakable in one's determination is very complicated loaded down with trivial details, needs the frock of design specialized to ensure the regularity of iron core overlapping.Secondly, also need between each operation repeatedly to transport semi-finished product iron core, there is iron core distortion displacement risk, production efficiency is also lower.In addition, because iron core column is differed greatly by multiple physical characteristics such as lamination, air gap plate and epoxy resin, (silicon steel sheet is 1.2x10
5/ DEG C, air gap plate is 2x10
5/ DEG C, epoxy resin is but 7.6x10
5/ DEG C be the former 6 times) material composition, the degree difference of expanding with heat and contract with cold due to various material is large, if this DC flat-wave reactor is applied to track traffic environment, be difficult to ensure that the size of the void dimension after random vehicle commander's distance crosses over multiple climate zone in iron core column can not change after expanding with heat and contract with cold.
Therefore, based on the applied environment of locomotive, designing the reactor taking into account property indices, is expectation general in the industry.
Summary of the invention
The object of the present invention is to provide a kind of reactor with novel magnetic circuit model, be applicable in track traffic environment, and this reactor have lightweight, volume is little, noise is low, leakage field is little, the advantages such as good anti-vibration.
To achieve these goals, the present invention adopts following technical scheme:
A kind of Novel reactor, comprises and forms integrally-built iron core, coil, angle brace bar, supporting base, stay-bolt and cushion block by vacuum pressure impregnation; Iron core is horizontal layout, and coil winding is on iron core; Iron core be zero-clearance without yoke core, end winding is all stretched out in the two ends of iron core, and the two ends of iron core are equipped with and run through whole iron core and fold thick center hole; Angle brace bar is at least four, is located between iron core and coil and around the circumference of iron core and is evenly arranged; Supporting base is two, and two described supporting bases lay respectively at the two ends of iron core and fold thick direction layout along iron core; Cushion block is made up of insulating material, is between iron core and supporting base; Stay-bolt, through center hole, cushion block, is connected and fixed with supporting base.
Coil can be formed by aluminium conductor or copper conductor coiling.The outline of coil can be rectangular or circular.
Without yoke core, zero-clearance refers to that iron core does not have iron yoke structure, iron core does not have air gap yet.Iron core can be formed by the lamination stack of 0.23 ~ 0.5mm.Core section can rectangular, Step Circular or ellipse.
Angle brace bar can be formed by insulating material mold pressing.
Stay-bolt can be not magnetic conduction bolt, and and do insulation processing between iron core, avoid forming circulation between stay-bolt and iron core, decrease eddy current loss simultaneously.
Principle of the present invention is as follows:
Stay-bolt, through center hole and cushion block, is interconnected with supporting base, thus iron core and supporting base is connected and fixed.Reactor is overall structure, and namely the parts such as iron core, coil, angle brace bar, supporting base, stay-bolt and cushion block form overall structure by vacuum pressure impregnation.Supporting base is generally arranged on locomotive, is parallel or nearly parallel to horizontal plane.Now, iron core is namely in horizontal layout, and iron core itself is as the support framework of whole reactor.Iron core both provided loop for magnetic field, was also the structural member of carrying simultaneously, thus made reactor achieve miniaturization, lightweight under the prerequisite ensureing vibration resistance, and technique is also very simple, with low cost simultaneously.
No matter this reactor is magnetic circuit or configuration aspects, all be conducive to miniaturization and the lightweight of reactor, such as: because place iron core in coil, and coil is all stretched out in the two ends of iron core, substantially increase the permeability of reactor, compared with air core reactor, under the prerequisite reaching identical inductances, the number of turn of the coil of this reactor can be less than air core reactor greatly; Equally because of the cause of iron core, less than air core reactor stray field in coil, supplementary load loss are less.The iron core of this reactor is overall structure, and iron core is not processed with air gap, this avoid the diffraction effect of air gap, effectively can reduce noise and the stray loss of reactor.Except the stay-bolt for secured core and supporting base, this reactor does not need other structural member secured core yet, and this simplifies the structure of reactor undoubtedly.
In addition, coil, directly around on iron core, need not be set with, and have the air flue that angle brace bar is formed between iron core, two ends and the outer surface of coil all open wide, for coil provides larger area of dissipation, ensure that the heat that coil produces effectively is exchanged, radiating condition is good.
Be placed with iron core in coil, and coil is stretched out at the two ends of iron core, namely the magnetic line of force that coil produces more closely constrains in around coil under the effect of iron core, and thus the inductance of reactor is larger, leakage field is less.Further, the either end at iron core two ends and the spacing of end winding
wherein K is coefficient, can in 0.8 ~ 2 scope value; S is the cross-sectional area of iron core.Limit the both ends of iron core and the distance of end winding, can allow this reactor under less volume size, obtain the inductance of suitable size.
Compared with air core reactor, this reactor by placing iron core in coil, and the less volume and weight of coil acquisition is stretched out at the two ends of iron core, and leakage field is also less, and Electro Magnetic Compatibility is more excellent; Compared with Magnetism-Screened Air-core Reactor, this reactor noise and Electro Magnetic Compatibility are good equally, but volume and weight is less, and technique is simpler, and coil area of dissipation is larger; Compared with iron core reactor, the electromagnetic performance of this reactor and the performance of iron core reactor very nearly the same, and the structure of this reactor more simple, assemble more convenient, noise is lower.Iron core in horizontal layout is that magnetic circuit can carry again, makes more compact structure.Meanwhile, because iron core is overall, noise is low, also not because air gap brings various harmful effect.
This reactor have lightweight, volume is little, noise is low, leakage field is little, the advantages such as good anti-vibration, be particularly applicable to being applied to track traffic environment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing reactor
Fig. 2 is the schematic diagram of iron core in existing reactor;
Fig. 3 be in the embodiment of the present invention iron core and coil coordinate schematic diagram;
Fig. 4 is the cutaway view of iron core and fitting coils in the embodiment of the present invention;
Fig. 5 is the schematic diagram of reactor in the embodiment of the present invention.
Description of reference numerals: 1-coil; 2-iron core; 3-center hole; 4-angle brace bar; 5-stay-bolt; 6-bearing support; 7-car body; 8-cushion block.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 3,4, coil 1 winding, on iron core 2, is evenly equipped with 4 angle brace bars 4 along the circumference of iron core 2 between iron core 2 and coil 1.In the present embodiment, angle brace bar 4 is made up of insulating material; Coil can be cylindrical layer winding, foil coil, disc coil or continuous winding, and the outline of coil 1 is square, and coil 1 is formed by aluminium conductor coiling, and coil 1 structure is multi-layer cylindrical; Iron core 2 is then formed by polylith silicon steel sheet stack, and its outline is cuboid, and does not arrange air gap in iron core 2.
As shown in Figure 3, the two ends of iron core 2 are all stretched out outside coil 1, and the center hole 3 of whole iron core 2 is run through in the folded thick direction two ends of iron core 2 all offered along iron core 2.The two ends of iron core 2 are separately fixed at two supporting bases by stay-bolt 5, namely on bearing support 6.In addition, stay-bolt 5 is not magnetic conduction bolt, and insulator can be assembled in its upper end, is used for installing the turnover lead-in wire of fixed coil 1.As shown in Figure 5, bearing support 6 is arranged on car body 7, and iron core 2 is namely in horizontal installation.Be placed with cushion block 8 between iron core 2 and bearing support to isolate.Cushion block 8 is made up of insulating material.Iron core 2, coil 1, angle brace bar 4, bearing support 6, stay-bolt 5 and cushion block 8 form overall structure by vacuum pressure impregnation.
As shown in Figure 4, in the present embodiment, along the distance of the end of the two ends of the length direction iron core 2 of iron core 2 and coil 1
wherein K value in 0.8 ~ 2 scope; S is the cross-sectional area of iron core, and by practical condition, S generally can at 500 ~ 90000mm
2value in scope, is preferably 500 ~ 70000mm
2.According to the change of L value, the inductance of reactor also changes thereupon.
For the reactor in the present embodiment, suppose that reactor 1, reactor 2 and reactor 3 are the reactor in the present embodiment, the coil turn of each reactor is 170 circles, flow through electric current I=65A, coil dimension is consistent, the shape of core section is consistent, and the spacing L between the two ends of iron core and end winding is respectively 12mm (reactor 1), 35mm (reactor 2) and 60mm (reactor 3), and the boundary condition in the magnetic field of each reactor is consistent.Along with the value of L changes, the inductance result of variations of reactor is in table 2.
The inductance result of variations of table 2 reactor
Obviously, within the specific limits, along with the increase of L value, the inductance of reactor continues to increase, and the generation inductance of reactor in the present embodiment is obviously greater than the generation inductance of air core reactor, comparatively air core reactor is more excellent for the electromagnetic performance of the reactor in the present embodiment.
More than describing in detail is illustrating for possible embodiments of the present invention, and change embodiment is also not used to limit the scope of the claims of the present invention, and the equivalence that all the present invention of disengaging do is implemented or changed, and all should be contained in the scope of the claims of this case.
Claims (7)
1. a Novel reactor, is characterized in that: comprise and form integrally-built iron core, coil, angle brace bar, supporting base, stay-bolt and cushion block by vacuum pressure impregnation; Described iron core is horizontal layout, and described coil winding is on iron core; Described iron core be zero-clearance without yoke core, end winding is all stretched out in the two ends of iron core, and the two ends of iron core are equipped with and run through whole iron core and fold thick center hole; Described angle brace bar is at least four, is located between iron core and coil and around the circumference of iron core and is evenly arranged; Described supporting base is two, and two described supporting bases lay respectively at the two ends of iron core; Described cushion block is made up of insulating material, is between iron core and supporting base; Described stay-bolt, through described center hole, cushion block, is connected and fixed with supporting base.
2. Novel reactor according to claim 1, is characterized in that: described iron core is formed by the lamination stack of 0.23 ~ 0.5mm.
3. Novel reactor according to claim 1, is characterized in that: described coil is formed by aluminium conductor or copper conductor coiling; Described coil is cylindrical layer winding, disc coil, continuous winding or foil coil.
4. Novel reactor according to claim 1, is characterized in that: the described either end at iron core two ends and the distance of end winding
wherein K value in 0.8 ~ 2 scope, S is the cross-sectional area of iron core.
5. Novel reactor according to claim 1, is characterized in that: described core section is rectangular, Step Circular or ellipse.
6. Novel reactor according to claim 1, is characterized in that: the outline of described coil is rectangular or circular.
7. Novel reactor according to claim 1, is characterized in that: described angle brace bar is formed by insulating material mold pressing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510267839.6A CN104867662A (en) | 2015-05-22 | 2015-05-22 | Novel electric reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510267839.6A CN104867662A (en) | 2015-05-22 | 2015-05-22 | Novel electric reactor |
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| CN104867662A true CN104867662A (en) | 2015-08-26 |
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| CN201510267839.6A Pending CN104867662A (en) | 2015-05-22 | 2015-05-22 | Novel electric reactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391041A (en) * | 2018-12-06 | 2019-02-26 | 国网辽宁省电力有限公司鞍山供电公司 | Complete period alternation magnetic flux leakage reclaiming type power supply device applied to air reactor |
| CN110289152A (en) * | 2019-07-31 | 2019-09-27 | 山东哈大电气有限公司 | A kind of iron-core reactor structure and its processing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201075325Y (en) * | 2007-06-18 | 2008-06-18 | 唐山松下产业机器有限公司 | Reactor |
| CN103377796A (en) * | 2012-04-18 | 2013-10-30 | 天津虹侨电器科技有限公司 | Iron-core electric reactor of horizontal soldering iron structure |
| CN203787241U (en) * | 2013-11-13 | 2014-08-20 | 上海晶鑫电工设备有限公司 | Radio-frequency reactor |
| CN204740936U (en) * | 2015-05-22 | 2015-11-04 | 佛山市中研非晶科技股份有限公司 | Electric reactor |
-
2015
- 2015-05-22 CN CN201510267839.6A patent/CN104867662A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201075325Y (en) * | 2007-06-18 | 2008-06-18 | 唐山松下产业机器有限公司 | Reactor |
| CN103377796A (en) * | 2012-04-18 | 2013-10-30 | 天津虹侨电器科技有限公司 | Iron-core electric reactor of horizontal soldering iron structure |
| CN203787241U (en) * | 2013-11-13 | 2014-08-20 | 上海晶鑫电工设备有限公司 | Radio-frequency reactor |
| CN204740936U (en) * | 2015-05-22 | 2015-11-04 | 佛山市中研非晶科技股份有限公司 | Electric reactor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391041A (en) * | 2018-12-06 | 2019-02-26 | 国网辽宁省电力有限公司鞍山供电公司 | Complete period alternation magnetic flux leakage reclaiming type power supply device applied to air reactor |
| CN109391041B (en) * | 2018-12-06 | 2023-10-20 | 国网辽宁省电力有限公司鞍山供电公司 | Full-period alternating leakage magnetic field recovery type power supply device applied to air-core reactor |
| CN110289152A (en) * | 2019-07-31 | 2019-09-27 | 山东哈大电气有限公司 | A kind of iron-core reactor structure and its processing method |
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Application publication date: 20150826 |
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