CN201191552Y - DC reactor - Google Patents
DC reactor Download PDFInfo
- Publication number
- CN201191552Y CN201191552Y CNU2008200586624U CN200820058662U CN201191552Y CN 201191552 Y CN201191552 Y CN 201191552Y CN U2008200586624 U CNU2008200586624 U CN U2008200586624U CN 200820058662 U CN200820058662 U CN 200820058662U CN 201191552 Y CN201191552 Y CN 201191552Y
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- iron core
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Abstract
The utility model relates to a direct-current reactor, which comprises an iron core, a coil and a mounting bottom plate, wherein the iron core is arranged on a bottom support and the coil is arranged in the iron core. The direct-current reactor is characterized in that quadrupole hard magnetic steels are arranged at two sides of the iron core, inductive pure iron shielding strips are arranged outside the quadrupole hard magnetic steels, fixing columns are arranged in the two sides of the coil, and a screw with a plain cushion and a spring washer is fixed with the mounting bottom plate via the fixing columns. The direct-current reactor has the advantages that under the condition of same current and same inductance, compared with the traditional reactor, the volume and the weight of the reactor are at least reduced by 30%, thereby saving precious space for frequency transducer.
Description
Technical field
The utility model relates to a kind of direct current reactor, can be used in the frequency converter, belongs to the direct current reactor technical field.
Background technology
Traditional direct current reactor as shown in Figure 1, by iron core 1, coil 2, draw copper bar 3, upper bracket 4, bottom bracket 5 and form, iron core 1 is located on the bottom bracket 5, being provided with the coil 2 of drawing copper bar 3 is located in the UI iron core 1, upper bracket 4 is located at coil 2 upper ends, the shortcoming of this structure is: the reactor volume is big, Heavy Weight, its former because:
Be unlikely saturated for iron core is operated under the bigger magnetic field intensity, in iron core, often will introduce air gap.The iron core of band air gap exists and the opposite magnetic field H d of magnetization M direction at the air gap place when external magnetic field H magnetization that is applied in, and it plays the magnetized effect of going down, and is called demagnetizing field.At this moment, the magnetic field intensity H1 in the iron core equals the poor of excitation field and demagnetizing field.(H1＝H-Hd＝H-NM)
In the formula, proportionality coefficient N. is called demagnetizing factor.For the closed magnetic circuit of band air gap, because N＜＜1, so the value of demagnetizing factor N approximates the ratio of gas length (Lg) and equivalent magnetic circuit length (Le).Degaussing factor N has determined the degree that band air-gap iron core magnetic hysteresis loop tilts.Demagnetizing factor N is more little, and the magnetic hysteresis loop inclined degree is more little.Along with the inclination of magnetic hysteresis loop, the joint of the magnetic hysteresis loop and the longitudinal axis (B) is progressively reducing, and promptly residual magnetic flux density Br reduces gradually, and the slope of little loop line and incremental permeability μ Δ are also constantly reducing.Figure one is depicted as at no air gap, small air gap and air gaps magnetic hysteresis loop.
L＝4π*10
-7*μΔ*S/Le
Direct current reactor is under the rated current working condition, for preventing that iron core is saturated under D.C. magnetic biasing air gaps must be set in iron circuit, big air gap causes iron core to reduce at incremental permeability μ Δ, for making under rated current, reach specified inductance, reactor is under normal circumstances worked not by saturated.The increase that must increase the magnetic conductive area S. magnetic conductive area of iron core causes the increase of reactance volume, weight.
Summary of the invention
The purpose of this utility model provides a kind of direct current reactor that reduces the volume weight reduction under the situation of identical magnetic energy product.
For realizing above purpose, the technical solution of the utility model provides a kind of direct current reactor, comprise iron core, coil, installation base plate, iron core is located on the bottom bracket, and coil is located in the iron core, it is characterized in that, be provided with four utmost point magnetically hard steel in the iron core both sides, be provided with inductance pure iron shielding strip outside four utmost point magnetically hard steel, fixed leg is located in the coil both sides, and screw band plain cushion bullet pad is fixed by fixed leg and installation base plate.
The utility model has been saved upper bracket, add four utmost point magnetically hard steel in the iron core both sides, adopt the Hard Magnetic resetting technique, reactor feeds direct current, then set up a D.C. magnetic field in core of reactor, iron core is magnetized by D.C. magnetic field, judges the direction of the D.C. magnetic field at iron core air gap place according to the helix tube Ampere's right-handed screw rule, guarantee at the magnetic direction of the Hard Magnetic of both sides, iron core air gap place opposite with the D.C. magnetic biasing magnetic direction, counteracting part D.C. magnetic biasing magnetic field.For preventing that Hard Magnetic from disturbing external electronic component, at inductance pure iron shielding strip of the outside subsides of Hard Magnetic, play armoured magnetic field, under equal electric current, equal inductance value condition, reactor dwindles 30% at least than traditional reactor volume and weight Z, for frequency converter has been saved valuable space.
The utility model has the advantages that and under the situation of identical magnetic energy product, reduce the volume weight reduction.
Description of drawings
Fig. 1 is traditional direct current reactor structural representation;
Fig. 2 is a kind of direct current reactor structural representation of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 2, be a kind of direct current reactor structural representation of the utility model, described a kind of direct current reactor CT96 iron core 1, four utmost point magnetically hard steel 2, coil 3, semi-circular epoxy fixed leg 4, installation base plate 5, inductance pure iron shielding strip 6, M6x80 screw band plain cushion bullet pad 7 are formed.
Iron core 1 is installed on the bottom bracket 5, coil 2 is installed in the iron core 1, and 6 four utmost point magnetically hard steel 8 are installed in iron core 1 both sides, posts inductance pure iron shielding strip 6 outside four utmost point magnetically hard steel 8, fixed leg 4 is installed in coil 2 both sides, and screw band plain cushion bullet pad 7 is fixing with installation base plate 5 by fixed leg 4.
During work, the utility model is serially connected in the positive terminal of the rectification circuit rear end of frequency converter with reactor, and AC ripple is gone in direct current reactor energy storage filtering in circuit.
Claims (1)
1. direct current reactor, comprise iron core (1), coil (2), base plate (5) is installed, iron core (1) is located on the bottom bracket (5), coil (2) is located in the iron core (1), it is characterized in that, be provided with four utmost point magnetically hard steel (8), outside four utmost point magnetically hard steel (8), be provided with inductance pure iron shielding strip (6) in iron core (1) both sides, fixed leg (4) is located in coil (2) both sides, and screw band plain cushion bullet pad (7) is fixing by fixed leg (4) and installation base plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200586624U CN201191552Y (en) | 2008-05-20 | 2008-05-20 | DC reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200586624U CN201191552Y (en) | 2008-05-20 | 2008-05-20 | DC reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201191552Y true CN201191552Y (en) | 2009-02-04 |
Family
ID=40335715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200586624U Expired - Lifetime CN201191552Y (en) | 2008-05-20 | 2008-05-20 | DC reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201191552Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878466A (en) * | 2012-12-19 | 2014-06-25 | 株式会社大亨 | Direct-current-reactor Combination Coupling Coils |
| CN110808146A (en) * | 2019-09-09 | 2020-02-18 | 无锡晶磊电子有限公司 | High-power direct current reactor |
-
2008
- 2008-05-20 CN CNU2008200586624U patent/CN201191552Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878466A (en) * | 2012-12-19 | 2014-06-25 | 株式会社大亨 | Direct-current-reactor Combination Coupling Coils |
| CN103878466B (en) * | 2012-12-19 | 2016-11-02 | 株式会社大亨 | It is also used as the coupling coil of direct current reactor |
| CN110808146A (en) * | 2019-09-09 | 2020-02-18 | 无锡晶磊电子有限公司 | High-power direct current reactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Direct-current reactor type magnetizing inrush current suppressor Effective date of registration: 20120713 Granted publication date: 20090204 Pledgee: Bank of Communications Ltd Shanghai Songjiang branch Pledgor: Shanghai Eagtop Electronic Technology Co., Ltd. Registration number: 2012990000369 |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201614 Shanghai Songjiang District Shihudang Industrial Park Tang Road, No. 88 Patentee after: Shanghai Eagle Peak Polytron Technologies Inc Address before: 201614 Shanghai Songjiang District Shihudang Industrial Park Tang Road, No. 88 Patentee before: Shanghai Eagtop Electronic Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090204 |