CN103227021A - Segmented variable cross-section winding - Google Patents
Segmented variable cross-section winding Download PDFInfo
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- CN103227021A CN103227021A CN2013101921305A CN201310192130A CN103227021A CN 103227021 A CN103227021 A CN 103227021A CN 2013101921305 A CN2013101921305 A CN 2013101921305A CN 201310192130 A CN201310192130 A CN 201310192130A CN 103227021 A CN103227021 A CN 103227021A
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Abstract
The invention provides a segmented variable cross-section winding which comprises a primary winding and a secondary winding; the primary winding and/or the secondary winding are/is provided with a plurality of taps; the plurality of taps divide the primary winding or the secondary winding into a plurality of segments; the areas of the cross sections of the segments are different. The segmented variable cross-section winding provided by the invention divides the winding into a plurality of segments, and the areas of the cross sections of segments are different, so that the winding can achieve voltage transformation or voltage stabilizing in cooperation with a measurement and control component, and electricity energy is transmitted to the secondary winding; copper materials are saved; and the sizes of products of voltage transformers or voltage stabilizers and the like are reduced, and the manufacturing cost is lowered.
Description
Technical field
The invention belongs to the winding field, be specifically related to a kind of segmentation variable cross-section winding.
Background technology
As shown in Figure 1, 2, winding is the core component of voltage regulator, pressurizer and some voltage regulating transformer, though they once may be different sometimes with the voltage of secondary, and electric current difference in the winding.But all be once to transmit electrical power in essence to secondary.
Be easy analysis, ignore the loss (loss of supposing transformer T is zero) of transformer T earlier.And for convenience of calculation hypothesis once is Ue=200V with the rated voltage of secondary, the power of transformer T is 2000W.
Think that at first once input is normal rated value 200V, primary current is like this:
Ignore the loss of transformer T,
,
,
Ignore the loss of transformer T, the rated power of transformer
The major function of voltage regulator, pressurizer and some voltage regulating transformer is exactly " pressure regulation " (voltage stabilizing), that is is working as the incoming line voltage U
1During fluctuation (instability is higher or lower than rated value 200V), keep the secondary output voltage U
2For rated value 200V(is actual is a stationary value that approaches rated value).But, seldom have to keep the secondary power output
Keep and equal
Constant, this is being set forth after a while.
The essence of pressure regulation and voltage stabilizing all is " transformation " and transmission electrical power, is the two emphasis difference of emphasizing, the purpose difference.
At first be to discuss to know voltage stabilizing function, voltage regulation function just also has been readily appreciated that.
Voltage stabilizing function is when incoming line voltage fluctuation or load variations cause output (secondary) voltage for desired rated voltage, a tapping position suitably adjusting line attachment according to certain rule changes no-load voltage ratio, thereby reaches the purpose of stablizing secondary voltage.1 details are as follows in conjunction with the accompanying drawings for detailed process.When input voltage is higher than rated voltage (Ue=200V), U for example
1=250V, at this moment detect and actuator just with the tap of a winding by accent A
3To A
4, transformer T has become step-down transformer, thereby keeps secondary voltage U
2=200V is constant.
When incoming line voltage is lower than rated voltage (Ue=200V), U for example
1=150V, at this moment detect and actuator just with the tap of a winding by accent A
3To A
2, transformer T has become step-up transformer, thereby keeps secondary voltage U
2=200V is constant.
The thickness in Transformer Winding line footpath is according to designed size of current decision, that is to stablize when constant when voltage be to be determined by the power of carrying.Transformer Winding line footpath is in case the selected back of making is exactly fix unalterable.
At input voltage U
1During for rated value 200V, if do not consider loss, calculate the front:
The power of carrying is
Discuss as primary voltage U below
1Situation when not being rated value 200V.
1. as primary voltage U
1When being higher than rated value 200V, for example
The time, in order to keep secondary voltage
For constant, a tapping need be transferred to A
4, at this moment transformer T is operated under the step-down state.If the power of carrying remains
, then primary side current is
, the I when once being rated voltage 200V
1=10A has lacked 2A.
2. as primary voltage U
1When being lower than rated value 200V, for example
The time, in order to keep secondary voltage
For constant, a tapping need be transferred to A
1, at this moment transformer T is operated under the pressure-increasning state.If the power of carrying remains
, then primary side current is necessary for
, the I when once being rated voltage 200V
1=10A is many 10A.
The line problem directly of dividing three kinds of situations that a winding of transformer is discussed below:
If the rated current I 1. when once being rated voltage
1=10A selects the line footpath of a winding.So when primary voltage is higher than rated value 200V, primary current will reduce that (under the constant situation of the power of carrying, as above-mentioned 8A＜10A), lead can not generate heat, transformer can operate as normal; But when primary voltage was lower than rated value 200V, primary current will increase (under the constant situation of the power of carrying, as above-mentioned 20A〉10A), and lead will generate heat, operate as normal when transformer can not be grown.As seen, select a winding wire diameter, the situation in the time of can not taking into account primary voltage and be lower than rated value according to a rated condition (load current value under the rated voltage).
If the electric current I 2. when once being maximum permissible voltage (for example above-mentioned 250V)
1=8A selects the line footpath of a winding.When primary voltage was rated value 200V, primary current will increase to 10A(so〉8A); When primary voltage was lower, for example during 100V, the primary current increase was more, is 20A(〉〉8A).As seen, select the scheme of a winding wire diameter more infeasible according to a ceiling voltage condition, the operate as normal in the time of can not growing of all can generating heat under once for the rated voltage condition has exactly been said nothing of the situation under lower primary voltage.
If the electric current I 3. when once being minimum permission voltage (for example above-mentioned 100V)
1=20A selects the line footpath of a winding.So when primary voltage is rated value 200V, primary current will be reduced to 10A(＜20A); When primary voltage was higher, for example during 250V, primary current reduced more, for 8A(＜＜20A).As seen, it is feasible selecting the scheme of a winding wire diameter according to minimum voltage condition, no matter once still is higher than under the rated voltage condition under the rated voltage condition, can not generate heat and operate as normal can grow the time.But the line footpath of a whole winding all is the lead of thick (selecting according to 20A), has both increased the weight of transformer, has wasted valuable copper cash resource again, has increased the cost and the cost of final products.
Above-mentioned three kinds of problems have covered the situation of all actual capabilities.In sum, as seen, present existing winding is difficult between function, performance and the cost to be weighed, and also is difficult to obtain an economical and practical product.
The pressurizer purpose is to make secondary voltage be stabilized in needed rated voltage (as U
2e=200V), as above-mentioned.And voltage regulator is the secondary tap of regulating transformer T according to concrete actual needs, obtains needed secondary voltage, as shown in Figure 2.When the secondary output voltage is lower than rated voltage (U
2e=200V) time, with the secondary tap of transformer T to the high direction adjustment of no-load voltage ratio, for example from B
3Be adjusted to B
4Otherwise, when the secondary output voltage is higher than rated voltage (U
2e=200V) time, with the secondary tap of transformer T to the low direction adjustment of no-load voltage ratio, for example from B
3Be adjusted to B
4Or B
1
Voltage regulating and stabilizing device is exactly with the adjustment of secondary output voltage and be stabilized in needed magnitude of voltage place, is not to be stabilized in the load voltage value place.The essence that is AC voltage regulator, voltage regulator or voltage regulating and stabilizing device all is to adjust the no-load voltage ratio of transformer, therefore all relate to the winding section selection problem the same with above-mentioned AC voltage regulator, and the segmentation variable cross-section can be saved the problem that copper material reduces cost.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, a kind of segmentation variable cross-section winding is provided, this segmentation variable cross-section winding can reduce small product size, reduces product cost.
The present invention is achieved through the following technical solutions:
A kind of segmentation variable cross-section winding comprises winding and secondary winding; A described winding and/or secondary winding have a plurality of taps, and described a plurality of taps are divided into a plurality of sections with winding or secondary winding, and the cross-sectional area of described each section has nothing in common with each other.
Further, if a winding has a plurality of taps, secondary winding is single winding, and described a plurality of taps are divided into a plurality of sections with a winding, the cross-sectional area of any one section
S i =I i / J, wherein
I i Be the rated current of this section,
JIt is the current density in the winding.
Further, if a winding is single winding, secondary winding has a plurality of taps, and described a plurality of taps are divided into a plurality of sections with secondary winding, the cross-sectional area of any one section
S i =I i / J, wherein
I i Be the rated current of this section,
JBe the current density in the secondary winding.
Segmentation variable cross-section winding of the present invention is by being divided into winding a plurality of sections, and the cross section of each section is had nothing in common with each other, make winding can either finish transformation or voltage stabilizing, and to the function of secondary winding transmission of electric energy, can save copper material again, reduce the volume of products such as transformer or pressurizer and reduce cost.
Description of drawings
Fig. 1 is used for the fundamental diagram of AC voltage regulator for many taps winding.
Fig. 2 is used for the fundamental diagram of AC voltage regulator for many taps winding.
Embodiment
The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
The invention provides a kind of segmentation variable cross-section winding, comprise winding and secondary winding; A described winding and/or secondary winding have a plurality of taps, and described a plurality of taps are divided into a plurality of sections with winding or secondary winding, and the cross-sectional area of described each section has nothing in common with each other.Tap how much be to decide according to concrete voltage stabilizing (pressure regulation) precision.
Present embodiment has a plurality of taps with a winding, and secondary winding is that the transformer of single winding is that example describes, as shown in Figure 1.The cross section of each section of winding determines that method is as follows:
At first determine the current density, J in the winding, can obtain the line footpath of each section again by the electric current of each section according to the permission work temperature rise (Δ T) of transformer.
For example, according to the design of transformer handbook: during natural cooling, in the time of Δ T=50 ℃, J=4A/mm
2
(1) obtains each section electric current earlier
A
0-A
1Section: I
1-0=2000W/100V=20A;
A
0-A
2Section: I
2-0=
A
0-A
3Section: I
3-0=2000W/200V=10A;
A
0-A
4Section: I
4-0=2000W/250V=8A;
(2) obtain the cross section of each section again
A
0-A
1Section: conductor cross-section S
1-0=I
1-0/ J=20/4=5mm
2
A
1-A
2Section: conductor cross-section S
2-1=I
2-0/ J=13.33/4=3.33mm
2
A
2-A
3Section: conductor cross-section S
3-2=I
3-0/ J=10/4=2.5mm
2
A
3-A
4Section: conductor cross-section S
4-3=I
4-0/ J=8/4=2.0mm
2
(3) select the specification enamelled wire for use
If select circular enamelled wire for use, just can obtain the calculated value in line footpath by above-mentioned each section cross section of asking, look into handbook again and select close gauge wire for use.
If select the cotton covered wire of square-section for use, also can look into handbook again and select close gauge wire for use by above-mentioned each section cross section calculated value of asking.
In sum, after winding of visible transformer adopts segmentation variable cross-section winding, can either finish transformation and, can save copper material again, reduce volume of transformer and reduce cost to the function of secondary transmission of electric energy.Same reason, this segmentation variable cross-section winding also can be used in and once be the fixed single winding, and secondary winding is (as shown in Figure 2) in the multitap transformer.At this moment the secondary winding of this transformer adopts segmentation variable cross-section winding.It all is under the multitap situation with secondary winding once that same reason, this segmentation variable cross-section winding can also be used in, and just at this moment the electric current of each section calculates more complicated.The present invention can be used in voltage regulator, pressurizer and some voltage regulating transformer, and the volume of this series products is reduced, and cost reduces.
The present invention not only is confined to above-mentioned embodiment; persons skilled in the art are according to content disclosed by the invention; can adopt other multiple embodiment to implement the present invention; therefore; every employing project organization of the present invention and thinking; do some simple designs that change or change, all fall into the scope of protection of the invention.
Claims (3)
1. segmentation variable cross-section winding comprises winding and secondary winding; It is characterized in that a described winding and/or secondary winding have a plurality of taps, described a plurality of taps are divided into a plurality of sections with winding or secondary winding, and the cross-sectional area of described each section has nothing in common with each other.
2. segmentation variable cross-section winding according to claim 1 is characterized in that, if a winding has a plurality of taps, secondary winding is single winding, and described a plurality of taps are divided into a plurality of sections with a winding, the cross-sectional area of any one section
S i =I i / J, wherein
I i Be the rated current of this section,
JIt is the current density in the winding.
3. segmentation variable cross-section winding according to claim 1 is characterized in that, if a winding is single winding, secondary winding has a plurality of taps, and described a plurality of taps are divided into a plurality of sections with secondary winding, the cross-sectional area of any one section
S i =I i / J, wherein
I i Be the rated current of this section,
JBe the current density in the secondary winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101921305A CN103227021A (en) | 2013-05-21 | 2013-05-21 | Segmented variable cross-section winding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101921305A CN103227021A (en) | 2013-05-21 | 2013-05-21 | Segmented variable cross-section winding |
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| Publication Number | Publication Date |
|---|---|
| CN103227021A true CN103227021A (en) | 2013-07-31 |
Family
ID=48837432
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101921305A Pending CN103227021A (en) | 2013-05-21 | 2013-05-21 | Segmented variable cross-section winding |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788836A (en) * | 2016-05-20 | 2016-07-20 | 李建新 | Transformer for low-voltage power transmission line |
| CN106207649A (en) * | 2016-08-23 | 2016-12-07 | 周刚 | A kind of Arc-free electrical connection or power-off method |
| CN111063526A (en) * | 2020-01-08 | 2020-04-24 | 云南电网有限责任公司昆明供电局 | Design method of winding suitable for multistage capacity regulating transformer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202373439U (en) * | 2011-12-24 | 2012-08-08 | 广东汇网电气有限公司 | Power transformer capable of freely switching primary side voltage |
| CN102664094A (en) * | 2012-05-23 | 2012-09-12 | 天津天能变压器有限公司 | Single-phase dry type converter transformer for suppressing polysilicon and voltage regulation way thereof |
| CN202444438U (en) * | 2012-03-02 | 2012-09-19 | 龚秋声 | Duplex controllable rectifying device |
| CN202601399U (en) * | 2012-05-30 | 2012-12-12 | 江苏科兴电器有限公司 | Multi-voltage-level electromagnetic voltage transformer |
| CN203242452U (en) * | 2013-05-21 | 2013-10-16 | 浙江腾腾电气有限公司 | Sectionalized variable cross-section winding |
-
2013
- 2013-05-21 CN CN2013101921305A patent/CN103227021A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202373439U (en) * | 2011-12-24 | 2012-08-08 | 广东汇网电气有限公司 | Power transformer capable of freely switching primary side voltage |
| CN202444438U (en) * | 2012-03-02 | 2012-09-19 | 龚秋声 | Duplex controllable rectifying device |
| CN102664094A (en) * | 2012-05-23 | 2012-09-12 | 天津天能变压器有限公司 | Single-phase dry type converter transformer for suppressing polysilicon and voltage regulation way thereof |
| CN202601399U (en) * | 2012-05-30 | 2012-12-12 | 江苏科兴电器有限公司 | Multi-voltage-level electromagnetic voltage transformer |
| CN203242452U (en) * | 2013-05-21 | 2013-10-16 | 浙江腾腾电气有限公司 | Sectionalized variable cross-section winding |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788836A (en) * | 2016-05-20 | 2016-07-20 | 李建新 | Transformer for low-voltage power transmission line |
| CN106207649A (en) * | 2016-08-23 | 2016-12-07 | 周刚 | A kind of Arc-free electrical connection or power-off method |
| CN111063526A (en) * | 2020-01-08 | 2020-04-24 | 云南电网有限责任公司昆明供电局 | Design method of winding suitable for multistage capacity regulating transformer |
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Application publication date: 20130731 |