CN202523538U - Rectifier transformer - Google Patents
Rectifier transformer Download PDFInfo
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- CN202523538U CN202523538U CN2011204522110U CN201120452211U CN202523538U CN 202523538 U CN202523538 U CN 202523538U CN 2011204522110 U CN2011204522110 U CN 2011204522110U CN 201120452211 U CN201120452211 U CN 201120452211U CN 202523538 U CN202523538 U CN 202523538U
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- secondary winding
- rectifier transformer
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- former limit
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Abstract
The utility model discloses a rectifier transformer which comprises an iron core, a primary side winding and a vice side winding. The rectifier transformer is characterized by further comprising redundancy unit sections. The vice side winding comprises a plurality of unit sections, wherein the plurality of unit sections are arranged in a ranked mode in sequence along the axial direction of the vice side winding. The redundancy unit sections are arranged on the upper side or the lower side of the vice side winding or arranged between any two unit sections and used for replacing faulted unit sections on the vice side winding. Due to the fact that the redundancy unit sections can directly replace the faulted unit sections, the continuous power supplying of a whole electric distribution system can be maintained.
Description
Technical field
The utility model belongs to technical field of transformer manufacturing, relates to a kind of rectifier transformer, particularly relates to the rectifier transformer of many power cell power supplies such as a kind of SVG (inversion dynamic passive compensation supply unit) of giving or HVF (high voltage frequency converter).
Background technology
At present; Giving the transformer great majority of many power cell power supplies such as SVG or HVF in the commercial production is common rectifier transformer; The problem of its existence is: 1. owing to give the common rectifier transformer of SVG or the many power cell power supplies of HVF; One or several elementary section faults in rectifier transformer will cause the outage of whole electrical power trans mission/distribution system, this unpredictable outage and give that entire society's economy causes directly or indirect economic loss be very important; 2. the continuous stability of electric power system is not high; 3. common rectifier transformer majority is the oil immersed type structure, and the transformer of this structure is prone to take place seepage oil pollution environment, meets fiery fire hazardous, produces blast etc.
Chinese patent CN2703314Y provides a kind of and can supply power continuously, do not had the uninterrupted power supply voltage regulating transformer of breakpoint; The transformer of this structure can be so that transformer be realized power supply continuously in regulating different voltage course; Yet when adopting this type transformer to supply power for many power cells such as SVG or HVF; When certain elementary section of rectifier transformer breaks down, still can cause the discontinuous power supply of whole distribution system.
The utility model content
The utility model technical problem to be solved is the above-mentioned deficiency that exists to rectifier transformer in the prior art; A kind of rectifier transformer that can realize uninterrupted power supply is provided; This rectifier transformer can also improve the power supply quality of SVG and HVF power cell electric power system, and then can improve the power supply stability of rectifier transformer.
The technical scheme that solution the utility model technical problem is adopted is that this rectifier transformer comprises iron core, former limit winding, secondary winding; Also include the redundancy unit section; Said secondary winding comprises several elementary sections; Said several elementary sections axially are arranged in order along the secondary winding, and said redundancy unit section is arranged on the upside or the downside of secondary winding or is arranged between any two elementary sections, are used for substituting the elementary section that the secondary winding breaks down.
Preferably, said former limit winding and secondary winding adopt the concentric type structure, and said former limit winding technique is on iron core, and the secondary winding technique is on the winding of former limit, to make things convenient for tap.
Preferably, the capacity sum of several elementary sections in the said secondary winding equates with the capacity of former limit winding.Wherein, all insulate each other between each elementary section in the secondary winding, insulate between the elementary section in said redundancy unit section and the secondary winding with insulating material.Said secondary winding links to each other with the valve side, and each elementary section is made up of the coil of the identical number of turn and thickness in the secondary winding, and draw separately at the top and the terminal of each coil.These elementary sections can move respectively, also can connect or parallel running.Can increase greatly after the low-voltage coil division between each division part of high-tension coil and low-voltage coil; And the short-circuit impedance between the low pressure division coil; Thereby well the short circuit current of limiting network is imported demand according to rectification unit; Regulate the quantity and the connected mode of each elementary section in the secondary winding and regulate output, can reach the output requirement of valve side, also can be with realizing " high pressure is to high pressure " Direct Transform after each section of secondary winding coil overlapped in series.Voltage on line side through the stack of rectifier transformer secondary winding output buck after, can independently power supply be provided for SVG and HVF power cell.
Preferably, the quantity of redundancy unit section is a plurality of, and for the low rectifier transformer of failure rate, the quantity of redundancy unit section can be less than or equal the quantity of elementary section in the secondary winding; For the high rectifier transformer of failure rate, the quantity of redundancy unit section can be more than the quantity of secondary winding element section.Can rational and effective design transformer like this, practice thrift cost, the reasonable disposition resource.
Preferably, the coil turn of redundancy unit section is identical with secondary winding element section with thickness, and draw separately at the top and the terminal of each coil, the redundancy unit section can be arranged on as required the secondary winding axially on.Like this when any one elementary section of secondary winding or plurality of units section break down; Under the situation that all can realize not cutting off the power supply; The redundancy unit section is replaced the secondary winding element section that breaks down rapidly, guarantees the normal operation of whole transformer, makes whole distribution system realize power supply continuously.
Preferably, in order to improve anti-short circuit capability, between former limit winding and secondary winding, be provided with the ground connection electric screen, said ground connection electric screen adopts Copper Foil or aluminium foil to process.
Preferably, the cold rolling grain-oriented electrical silicon steel sheet of employing unshakable in one's determination is as permeability magnetic material, and core lamination adopts 45 ° of three grades of full bias seams, and screw rod, arm-tie clamping structure are drawn in the atresia colligation, and this structure can reduce no-load loss, no-load current.Because there is harmonic component in commutating circuit, so the magnetic density value unshakable in one's determination of the utility model rectifier transformer should be lower, can effectively improve valve side output waveform, reduce transformer vibration and noise.
Preferably, former limit winding links to each other with the net side, and former limit winding has three or the shunting tap more than three, has enlarged the range of regulation of transformer, and its range of regulation is in ± 10%.
Preferred said rectifier transformer adopts the dry rectifier transformer.
Owing to be provided with the redundancy unit section, and interruption maintenance in the time of need not growing is in time dropped in the redundancy unit section back of can a certain elementary section in the secondary winding breaking down in the utility model; Between former limit winding 2 and secondary winding 4, ground connection electric screen 3 is set; Can eliminate the various high frequency overvoltage of net side and prevent to net of the influence of the various high frequency lightning surges of side valve side rectifying component; And prevent the generation of valve side higher harmonic current; Prevent partial discharge, improved fail safe and the functional reliability and the useful life of transformer greatly, can guarantee transformer long-term safety reliability service; Because there is harmonic component in commutating circuit, the close value of magnetic unshakable in one's determination of the utility model rectifier transformer is lower, can effectively improve valve side output waveform, reduces transformer vibration and noise.
The utility model rectifier transformer can be realized uninterrupted power supply, and does not need long-time interruption maintenance, can effectively reduce harmonic content, reduces cost, and it is rational in infrastructure, and technical performance is advanced, and safe and reliable.
Description of drawings
Fig. 1 is the structural representation of the utility model rectifier transformer;
Among the figure: 1-is unshakable in one's determination; The former limit of 2-winding; 3-ground connection electric screen; 4-secondary winding; 5-redundancy unit section; The 6-elementary section.
Embodiment
For making those skilled in the art understand the technical scheme of the utility model better, the utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, the utility model rectifier transformer adopts the dry rectifier transformer, and it comprises iron core 1, former limit winding 2, ground connection electric screen 3, secondary winding 4 and redundancy unit section 5.
In the present embodiment, former limit winding 2 adopts the concentric type structure with secondary winding 4, can make things convenient for tap, and former limit winding 2 is wound on unshakable in one's determination 1, and secondary winding 4 is wound on the former limit winding 2.This concentric structure design can be satisfied minimum leakage reactance requirement.
Wherein, said secondary winding 4 comprises a plurality of elementary sections 6, and the capacity sum of a plurality of elementary sections 6 in the secondary winding equates with the capacity of former limit winding 2.Said a plurality of elementary section 6 axially being arranged in order along secondary winding 4.In the present embodiment, redundancy unit section 5 is arranged between any two elementary sections 6 in the secondary winding, to be used for substituting the elementary section that secondary winding 4 breaks down.
Secondary winding 4 links to each other with the valve side, all insulate by the design requirement each other with insulating material between each elementary section 6, and each elementary section 6 is made up of the coil of the identical number of turn and thickness, and draw separately at the top and the terminal of each coil.These elementary sections can be distinguished independent operating, also can connect or parallel running, and when other elementary section operations, the elementary section that does not move is unloaded.Quantity according to elementary section in the secondary winding; According to rectification unit input demand; Through regulating the output of each elementary section in the secondary winding; Can reach the output requirement of valve side, also axially realize " high pressure is to high pressure " Direct Transform after each section coil overlapped in series, to reach valve side output requirement.Thereby can make rectifier transformer realize that multivoltage regulates output, for SVG and HVF power cell provide independently power supply.
Wherein, The coil turn of redundancy unit section 5 and thickness are identical with elementary section 6 in the secondary winding; Draw separately at the top and the terminal of each coil, because redundancy unit section 5 can be arranged in the axial dimension of secondary winding 4 coil of the coil of elementary section 6 and redundancy unit section 5 coupling in the secondary winding as required; When any one elementary section in secondary winding 4 or plurality of units section break down like this; Redundancy unit section 5 can be replaced the elementary section 6 that breaks down in the secondary winding rapidly, therefore can realize uninterrupted power supply, and not need interruption maintenance.
When break down the only load of elementary section 6 orders the time, redundancy unit section 5 can directly be replaced this elementary section 6.When break down be several series connection or the parallel connection elementary section 6 time; Also can the redundancy unit section 5 of several series connection or parallel connection be substituted this trouble unit; Through said several redundancy unit sections 5 directly being connected the load that trouble unit connects; Guarantee the normal operation of whole transformer, make whole distribution system realize power supply continuously.Zero load when redundancy unit section 5 is not worked is not connected with any other elementary section.
For the low rectifier transformer of failure rate, redundancy unit section 5 the quantity that quantity can be less than or equal secondary winding element section 6 is set; For the high rectifier transformer of failure rate, the quantity that is provided with of redundancy unit section 5 can be more than the quantity of secondary winding element section 6.This design with loop construction; Especially under the low situation of failure rate; Can not need each elementary section 6 in the secondary winding all be provided with a subsequent use redundancy unit section 5, only a spot of subsequent use redundancy unit section 5 need be set in the secondary winding and gets final product.But also failure rate rule of thumb rationally is provided with the quantity of redundancy unit section 5, with the reasonable and effective configuration resource, practices thrift cost, raises the efficiency.
In the present embodiment, former limit winding 2 links to each other with the net side, has three or the shunting tap more than three, has enlarged the range of regulation of transformer, and its range of regulation is in ± 10%.
In the present embodiment, unshakable in one's determination 1 adopts cold rolling grain-oriented electrical silicon steel sheet as permeability magnetic material, and core lamination adopts 45 ° of three grades of full bias seams, and screw rod, arm-tie clamping structure are drawn in the atresia colligation.
Wherein, ground connection electric screen 3 is arranged between former limit winding 2 and the secondary winding 4, is made by Copper Foil or aluminium foil, to improve anti-short circuit capability.Ground connection electric screen 3 can be eliminated the various high frequency overvoltage of net side and prevent to net the influence of the various high frequency lightning surges of side to valve side rectifying component; And prevent the generation of valve side higher harmonic current; Prevent partial discharge; Improve fail safe and the functional reliability and the useful life of transformer greatly, can guarantee transformer long-term safety reliability service.
It is understandable that above execution mode only is the illustrative embodiments that adopts for the principle that the utility model is described, yet the utility model is not limited thereto.For the one of ordinary skilled in the art, under the situation of spirit that does not break away from the utility model and essence, can make various modification and improvement, these modification and improvement also are regarded as the protection range of the utility model.
Claims (8)
1. rectifier transformer; Comprise iron core, former limit winding, secondary winding; It is characterized in that also including the redundancy unit section, said secondary winding comprises several elementary sections, said several elementary sections axially being arranged in order along the secondary winding; Said redundancy unit section is arranged on the upside or the downside of secondary winding or is arranged between any two elementary sections, is used for substituting the elementary section that the secondary winding breaks down.
2. rectifier transformer according to claim 1 is characterized in that said former limit winding and secondary winding adopt the concentric type structure, and the capacity sum of several elementary sections in the said secondary winding equates with the capacity of former limit winding.
3. rectifier transformer according to claim 2 is characterized in that said former limit winding technique on iron core, and the secondary winding technique is on the winding of former limit; Mutually insulated between each elementary section in the secondary winding insulate between the elementary section in said redundancy unit section and the secondary winding.
4. rectifier transformer according to claim 3, the quantity that it is characterized in that the redundancy unit section is a plurality of, the coil turn of said redundancy unit and thickness are identical with elementary section in the secondary winding.
5. according to the described rectifier transformer of one of claim 1-4, it is characterized in that former limit winding has three and three above shunting taps, its range of regulation is in ± 10%.
6. according to the described rectifier transformer of one of claim 1-4, it is characterized in that between former limit winding and secondary winding, being provided with the ground connection electric screen, said ground connection electric screen adopts Copper Foil or aluminium foil to process.
7. according to the described rectifier transformer of one of claim 1-4, it is characterized in that the cold rolling grain-oriented electrical silicon steel sheet of employing unshakable in one's determination as permeability magnetic material, 45 ° of three grades of full bias seam modes of employing unshakable in one's determination are carried out stack.
8. according to the described rectifier transformer of one of claim 1-4, it is characterized in that said rectifier transformer adopts the dry rectifier transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204522110U CN202523538U (en) | 2011-11-15 | 2011-11-15 | Rectifier transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204522110U CN202523538U (en) | 2011-11-15 | 2011-11-15 | Rectifier transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202523538U true CN202523538U (en) | 2012-11-07 |
Family
ID=47106476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204522110U Expired - Fee Related CN202523538U (en) | 2011-11-15 | 2011-11-15 | Rectifier transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202523538U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377008A (en) * | 2014-12-12 | 2015-02-25 | 绵阳市容富电子科技有限公司 | PFC common mode inductor |
| CN104376969A (en) * | 2014-12-12 | 2015-02-25 | 绵阳市容富电子科技有限公司 | Common-mode inductor |
| CN104425112A (en) * | 2013-09-04 | 2015-03-18 | 台达电子企业管理（上海）有限公司 | Transformer |
-
2011
- 2011-11-15 CN CN2011204522110U patent/CN202523538U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104425112A (en) * | 2013-09-04 | 2015-03-18 | 台达电子企业管理（上海）有限公司 | Transformer |
| EP2846335A3 (en) * | 2013-09-04 | 2015-04-08 | Delta Electronics (Shanghai) Co., Ltd. | Transformer |
| CN104377008A (en) * | 2014-12-12 | 2015-02-25 | 绵阳市容富电子科技有限公司 | PFC common mode inductor |
| CN104376969A (en) * | 2014-12-12 | 2015-02-25 | 绵阳市容富电子科技有限公司 | Common-mode inductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20131115 |