CN101807467A - Inductive reactor - Google Patents
Inductive reactor Download PDFInfo
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- CN101807467A CN101807467A CN201010128604A CN201010128604A CN101807467A CN 101807467 A CN101807467 A CN 101807467A CN 201010128604 A CN201010128604 A CN 201010128604A CN 201010128604 A CN201010128604 A CN 201010128604A CN 101807467 A CN101807467 A CN 101807467A
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Abstract
The invention relates to an installation type inductive reactor comprising a core body, coils surrounding the core body and at least two magnetic boxes coating the coils, wherein the magnetic boxes are hermetically matched and are sequentially stacked in the direction of a vertical shaft of the magnetic core body, and the core body is made of magnetic saturation-resistant materials and has a structure. The invention has the advantages that due to the adoption of the structure with the hermetic magnetic boxes, the inductive reactor does not generate magnetic-flux leakage on the outside in the state of rated-power frequency and large-current excitation so as to not generate electromagnetic interference caused by the magnetic-flux leakage on the outside when avoiding the generation of the phenomenon of magnetic saturation. The invention also adopts the magnetic saturation-resistant materials as partial core body mediums so as to further prevent the core body from generating a coupling magnetic field and generating the magnetic saturation under large current. Comprehensively, the inductive reactor can effectively avoid the generation of the phenomenon of the magnetic saturation under the large current, thereby obtaining the wide linear range of reactive resistance.
Description
[technical field]
The present invention relates to field of power electronics, relate in particular to a kind of inductive reactor.
[background technology]
Along with fast development of national economy, intelligent electrical network is had higher requirement to the management of power use of low voltage electric network.Carrier communication on the low-voltage power line is increasing widespread usage in electrical network.Utilize modern science and technology to realize the modernization of the low voltage electric network management of power use, the important component part that automation has become intelligent grid through continuous development test.At present, one of main application of carrier communication is the remote meter reading of realizing the user on the low-voltage power line.By on user's ammeter, installing special-purpose chip additional, the data in the electric supply meter are transferred to the data center of power department by power line in the mode of carrier wave, thereby obtain canned data in the electric supply meter.The meter reading method of traditional " from door to door " has been avoided in this application, has saved great amount of manpower, has improved the operating efficiency of power department.
But the access of a large amount of novel electrical appliances has not only caused serious noise jamming to low voltage electric network, and various low impedance points on electrical network, have been formed, these low impedance points that are seen everywhere make the transmission of carrier wave be in the impedance state that do not match always, cause the flutter fading of carrier wave in transmission course.Specifically, when electrical network offers in the process of load power source work, owing to existing nonlinear device to produce higher harmonic current in the load.The characteristic of the nonlinear impedance of load can show and be utmost point Low ESR on a certain frequency, on this frequency, and the carrier signal that seriously decayed gain.The higher harmonic current that is produced by nonlinear load feeds back in the electrical network simultaneously, causes the harmonic pollution to electrical network, thereby has reduced the power supplying efficiency of power supply grid, has destroyed the mains supply quality of power supply.
In order to address this problem, people have proposed the inductive reactor that employing connects with ammeter the clutter in the electrical network are implemented to intercept, and avoid it that significant carrier signal is produced and disturb.Inductive reactor can be serially connected on the live wire of electric supply meter usually, because the frequency of carrier signal is higher usually, therefore adopt the effect of inductive reactor to be to stop of the interference of the clutter of all following electrical equipment generations of user's electric power meter end on the one hand, also be to stop carrier signal by the low-impedance load short circuit or the decay of user side on the one hand the carrier frequency signaling section.About inductive reactor structure of the prior art, can application reference number be the Chinese patent application of CN02266518 and CN200820030407.
Though disclosed inductive reactor can play the effect of elimination clutter on the principle in the prior art, but find in the actual use, in case the electric current through inductive reactor increases to tens of amperes, inductive reactor of the prior art has just produced the magnetic saturation phenomenon and can't play the effect of wave arrestment, and itself can produce new clutter again the inductive reactor after saturated, not only unhelpful harmful on the contrary to purifying electrical network.Along with the quantity and the power consumption of household electrical appliance constantly increases, reaching tens amperes through the electric current of electric supply meter is common phenomena very.Therefore the magnetic saturation phenomenon of inductive reactor of the prior art under big electric current become the biggest obstacle that hinders its extensive use in electrical network.
[summary of the invention]
Technical problem to be solved by this invention is, a kind of inductive reactor is provided, and can avoid issuing the magnetisation saturated phenomenon at big electric current, and it can be applied in the electrical network.
In order to address the above problem, the invention provides a kind of inductive reactor, comprise core body, center on the coil of core body and the magnetic holder of parcel coil, the number of magnetic holder is at least two, direction along the core body longitudinal axis stacks gradually placement, and described core body adopts diamagnetic saturability material to make.
As optional technical scheme, the relative permeability of described core material is not more than 1.
As optional technical scheme, the material of described core body is copper or engineering plastics.
As optional technical scheme, the D.C. resistance of the coiling that described coil adopted is not more than 0.002 ohm, and inductance value is greater than 25 microhenrys.
As optional technical scheme; described inductive reactor comprises that further one is used for the shell of ccontaining magnetic holder; the size of described shell cooperatively interacts with the size that is installed on the earth leakage protective device in the electrical network, so that inductive reactor is with the adjacent installation of earth leakage protective device.
The invention has the advantages that, adopt the structure of airtight magnetic holder, under the big current excitation state of specified power frequency, do not produce leakage field to external world, when purpose is to avoid taking place the magnetic saturation phenomenon, can not produce the electromagnetic interference that causes because of leakage field to external world.The present invention has also adopted diamagnetic material as the partial core body medium, further avoid in the core body producing coupled magnetic field and issue magnetisation saturated at big electric current, comprehensive above 2 points, the disclosed inductive reactor device of the present invention can be avoided issuing the magnetisation saturated phenomenon at big electric current effectively, thereby obtains the very wide reactance range of linearity.
[description of drawings]
It shown in the accompanying drawing 1 exploded view of inductive reactor in the embodiment of the present invention;
Accompanying drawing 2 is the schematic perspective views after each unit construction shown in the accompanying drawing 1;
Accompanying drawing 3 is the structural representations after inductive reactor shown in the accompanying drawing 2 and the shell combination;
Accompanying drawing 4 is test curves of reactor described in the embodiment of the invention.
[embodiment]
Elaborate below in conjunction with the embodiment of accompanying drawing to inductive reactor provided by the invention.
Be the exploded view of the described inductive reactor 10 of this embodiment shown in the accompanying drawing 1, accompanying drawing 2 is schematic perspective views of the inductive reactor 10 after each unit construction shown in the accompanying drawing 1.Described inductive reactor 10 comprises: core body 110; Around the coil 120 of core body 110 and the magnetic holder 130 of parcel coil 120.Magnetic holder in this embodiment is two, be respectively magnetic holder 131 and 132, in other embodiment, can also comprise more magnetic holder, more magnetic holder should be arranged between magnetic holder 131 and 132, piles up setting along the axial direction of core body 110.
Described inductive reactor 10 further comprises the loop sleeve 191 and 192 of the mutual fastening of annular, adopts insulating material to make, and is installed between coil 120 and the magnetic holder 130 after fastening mutually, and both isolation are got up.
Described inductive reactor 10 also comprises the nut 111 supporting with core body 110, and both are spirally connected mutually with fixedly magnetic holder 130 and coil 120.
It is saturated to issue magnetisation for fear of inductive reactor at big electric current, and this embodiment is designed to two magnetic holders 131 and 132 that are stacked each other on together with magnetic holder 130.When in coil 120, having electric current to pass through, can in magnetic holder 130, forming coupled magnetic field, because magnetic holder 130 comprises two magnetization of piling up mutually 131 and 132, so between can produce leakage field, purpose is to avoid taking place the magnetic saturation phenomenon.
And further experiment shows, this design can not be avoided the magnetic saturation of inductive reactor 10 under big electric current fully, so the technical scheme that this embodiment proposed is further improved the material of core body 110.For fear of core body under the situation of big electric current 110 magnetic saturation takes place, the material of the core body 110 that this embodiment adopted is diamagnetic substances.So-called diamagnetic substance is meant the material that can not be magnetized in magnetic field, adopt the material of this material as core body 110, and it is saturated to avoid core body 110 to issue magnetisation in the situation of coil 120 by big electric current.As further quantificational description to diamagnetic substance, the diamagnetic substance that described core body 110 is adopted should be that relative permeability is not more than 1 material, for example gold, silver, copper, lead or engineering plastics etc., especially copper and engineering plastics cheap and be easy to processing, be the preferred material that core body 110 is adopted.So-called engineering plastics are the general designation of polyamide (claim nylon again, be abbreviated as PA), polyformaldehyde (POM), Merlon (PC), Noryl (PPO also has and is abbreviated as PPE's) and polyester several plastics such as (PBT and PET) normally.
Affiliated magnetic holder 131 and the 132 preferred high frequency ferrite alloy materials that adopt are made, and can improve the diamagnetic saturated performance of reactor 10 under big electric current.
The D.C. resistance of the coiling that described coil 120 is adopted is not more than 0.002 ohm, and inductance value is greater than 25 microhenrys.
Further, described inductive reactor 10 comprises that also one is used for the shell of ccontaining magnetic holder.Accompanying drawing 3 is depicted as inductive reactor 10 structural representations that have shell 180, and coil deck 170 and two holding screws 171 and 172 further have been installed on the shell 180.Two joints of the coil 120 of inductive reactor 10 snap in the wiring hole of coil deck 170, and by holding screw 171 and 172 chuckings.Coil deck 170 further comprises the interface (not shown) that connects with outside.Therefore, inductive reactor 10 is mixed after the shell 180, just can be installed in the workplace and use, and for example is connected on the live wire of electric supply meter.Because ammeter all is installed in the very little space usually; laying of various assemblies is all very compact; for the installation that makes inductive reactor 10 can not take original just narrow space very; therefore the size of described shell 180 size that preferably can be designed to and be installed on the earth leakage protective device in the electrical network cooperatively interacts; the length and width that are shell 180 are identical with earth leakage protective device, so just can adjacent installation with earth leakage protective device.
Next provide one embodiment of the present of invention.
In the described inductive reactor of present embodiment, the material of winding wire is an enamel covered wire, 3 millimeters of diameters, and altogether around 6 circles, 350 millimeters of coil diameters.Adopt nylon to make loop sleeve outside the coil.The outer magnetic holder of sleeve is two that separate up and down, 86 millimeters of the inside radius of magnet ring, and 210 millimeters of outer radius adopt high frequency ferrite alloy material material to make.Core body adopts nylon to make 5 millimeters of diameters.The trap of said structure is carried out high-current test show,, still do not observe saturated phenomenon by under the situation of 100 Ampere currents.Following table is above-mentioned inductance to be done the test result of AC great current test.Therefore test repeating six times under the same conditions, has all obtained six corresponding magnitudes of voltage under each current value, and to get arithmetic average be final magnitude of voltage to six magnitudes of voltage the most at last.The employing electric current is an ordinate, and corresponding voltage is abscissa curve plotting figure, and as shown in Figure 4, the visible given inductive reactor of present embodiment saturated sign do not occur yet under the big electric current of 100A.
| Electric current (A) | Voltage (V) | Voltage (V) | Voltage (V) | Voltage (V) | Voltage (V) | Voltage (V) |
| ?2 | ??0.084 | ??0.085 | ??0.083 | ??0.082 | ??0.084 | ??0.084 |
| ?3 | ??0.126 | ??0.127 | ??0.125 | ??0.124 | ??0.126 | ??0.126 |
| ?4 | ??0.168 | ??0.168 | ??0.168 | ??0.168 | ??0.168 | ??0.168 |
| ?5 | ??0.21 | ??0.21 | ??0.21 | ??0.21 | ??0.21 | ??0.21 |
| Electric current (A) | Voltage (V) | Voltage (V) | Voltage (V) | Voltage (V) | Voltage (V) | Voltage (V) |
| ?10 | ??0.42 | ??0.42 | ??0.42 | ??0.42 | ??0.42 | ??0.42 |
| ?20 | ??0.84 | ??0.84 | ??0.84 | ??0.84 | ??0.84 | ??0.84 |
| ?30 | ??1.26 | ??1.26 | ??1.26 | ??1.24 | ??1.23 | ??1.24 |
| ?40 | ??1.68 | ??1.68 | ??1.68 | ??1.68 | ??1.68 | ??1.68 |
| ?50 | ??2.09 | ??2.09 | ??2.09 | ??2.09 | ??2.1 | ??2.09 |
| ?60 | ??2.5 | ??2.49 | ??2.5 | ??2.5 | ??2.5 | ??2.5 |
| ?70 | ??2.91 | ??2.9 | ??2.92 | ??2.91 | ??2.92 | ??2.91 |
| ?80 | ??3.33 | ??3.33 | ??3.32 | ??3.3 | ??3.33 | ??3.32 |
| ?90 | ??3.75 | ??3.72 | ??3.73 | ??3.71 | ??3.73 | ??3.71 |
| ?100 | ??4.12 | ??4.11 | ??4.1 | ??4.08 | ??4.06 | ??4.11 |
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. inductive reactor comprises core body, around the coil of core body and the magnetic holder of parcel coil, it is characterized in that the number of magnetic holder is at least two, stacks gradually placement along the direction of the core body longitudinal axis, and described core body adopts diamagnetic saturability material to make.
2. inductive reactor according to claim 1 is characterized in that the relative permeability of described core material is not more than 1.
3. inductive reactor according to claim 1 and 2 is characterized in that, the material of described core body is copper or engineering plastics.
4. inductive reactor according to claim 1 is characterized in that the D.C. resistance of the coiling that described coil adopted is not more than 0.002 ohm, and inductance value is greater than 25 microhenrys.
5. inductive reactor according to claim 1; it is characterized in that; described inductive reactor comprises that further one is used for the shell of ccontaining magnetic holder; the size of described shell cooperatively interacts with the size that is installed on the earth leakage protective device in the electrical network, so that inductive reactor is with the adjacent installation of earth leakage protective device.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010128604A CN101807467A (en) | 2010-03-19 | 2010-03-19 | Inductive reactor |
| PCT/CN2010/071438 WO2011032376A1 (en) | 2009-09-18 | 2010-03-30 | Inductive reactor |
| CN2010800412887A CN102792399A (en) | 2009-09-18 | 2010-03-30 | Inductive reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010128604A CN101807467A (en) | 2010-03-19 | 2010-03-19 | Inductive reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101807467A true CN101807467A (en) | 2010-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010128604A Pending CN101807467A (en) | 2009-09-18 | 2010-03-19 | Inductive reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101807467A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937484A (en) * | 2010-09-10 | 2011-01-05 | 中国电力科学研究院 | Method for modeling electrical analysis model of saturable reactor for converter valve |
| CN102360818A (en) * | 2011-06-03 | 2012-02-22 | 北京英博电气股份有限公司 | Three-phase powder metallurgy soft magnetic tank for reactor and transformer |
| CN102360721A (en) * | 2011-06-03 | 2012-02-22 | 北京英博电气股份有限公司 | Assembled single-phase reactor |
| CN104466892A (en) * | 2014-12-25 | 2015-03-25 | 丁柳信 | Laboratory power supply protection device |
| CN107146692A (en) * | 2017-07-12 | 2017-09-08 | 无锡晶磊电子有限公司 | High frequency three-phase reactor |
| WO2017147757A1 (en) * | 2016-02-29 | 2017-09-08 | 博立多媒体控股有限公司 | Electromagnetic induction device and method for manufacturing same |
-
2010
- 2010-03-19 CN CN201010128604A patent/CN101807467A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937484A (en) * | 2010-09-10 | 2011-01-05 | 中国电力科学研究院 | Method for modeling electrical analysis model of saturable reactor for converter valve |
| CN102360818A (en) * | 2011-06-03 | 2012-02-22 | 北京英博电气股份有限公司 | Three-phase powder metallurgy soft magnetic tank for reactor and transformer |
| CN102360721A (en) * | 2011-06-03 | 2012-02-22 | 北京英博电气股份有限公司 | Assembled single-phase reactor |
| CN102360721B (en) * | 2011-06-03 | 2014-07-30 | 北京英博电气股份有限公司 | Assembled single-phase reactor |
| CN104466892A (en) * | 2014-12-25 | 2015-03-25 | 丁柳信 | Laboratory power supply protection device |
| WO2017147757A1 (en) * | 2016-02-29 | 2017-09-08 | 博立多媒体控股有限公司 | Electromagnetic induction device and method for manufacturing same |
| CN108604493A (en) * | 2016-02-29 | 2018-09-28 | 博立多媒体控股有限公司 | Electromagnetic induction device and preparation method thereof |
| CN107146692A (en) * | 2017-07-12 | 2017-09-08 | 无锡晶磊电子有限公司 | High frequency three-phase reactor |
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Application publication date: 20100818 |