CN201754362U - Winding structure of power transformer primary coil - Google Patents
Winding structure of power transformer primary coil Download PDFInfo
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- CN201754362U CN201754362U CN201020279943XU CN201020279943U CN201754362U CN 201754362 U CN201754362 U CN 201754362U CN 201020279943X U CN201020279943X U CN 201020279943XU CN 201020279943 U CN201020279943 U CN 201020279943U CN 201754362 U CN201754362 U CN 201754362U
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Abstract
The utility model relates to a winding structure of a power transformer primary coil, and particularly, secondary output voltage remains unchanged when primary input voltage is mutually converted between 220V and 380V. The primary coil of a transformer includes a first winding, a second winding and a third winding, turn of the first winding is N11, the first winding is provided with a first connecting end and a second connecting end, turn of the second winding is N12, the second winding is provided with a second connecting end and a third connecting end, turn of the third winding is N13, the third winding is provided with a fourth connecting end and a fifth connecting end, the turn N13 of the third winding is equal to the turn N12 of the second winding, ratio of the turn N11 of the first winding to the turn N12 of the second winding is N11:N12=3:8, when the primary input voltage of the transformer is 220V, the third winding is connected with the second winding in parallel, and when the primary input voltage of the transformer is 380V, the third winding is connected with the second winding in series. The winding structure is simple in winding, reduces winding cost, is convenient in connection and operation, and is safe and reliable.
Description
Technical field
The utility model relates to a kind of winding structure of power transformer primary coil, and when the input voltage on the corresponding former limit of specifically a kind of power transformer was changed between 220V and 380V mutually, the secondary output voltage of described power transformer remained unchanged.
Background technology
At present, to realize on the same power transformer that former limit input voltage change between 220V and 380V, and when the secondary output voltage of power transformer is remained unchanged, need to increase the volume of described power transformer, will increase the coiling cost of transformer simultaneously, attended operation is convenient inadequately.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of winding structure of power transformer primary coil is provided, and its winding method is simple, reduces the coiling cost, and attended operation is convenient, and is safe and reliable.
The technical scheme that provides according to the utility model, the winding structure of described power transformer primary coil, the primary coil of described transformer comprises first coiling, second coiling and the 3rd coiling, and the number of turn of described first coiling is N11, and first coiling has first link and second link; The number of turn of second coiling is N12, and second coiling has second link and the 3rd link; The number of turn of the 3rd coiling is N13, and the 3rd coiling has the 4th link and the 5th link; The number of turn N13 of described the 3rd coiling equates with the number of turn N12 of second coiling; The pass of the number of turn N12 of the number of turn N11 of first coiling and second coiling is N11: N12=3: 8; When the input voltage on the former limit of transformer was 220V, the 4th link of the 3rd coiling was electrically connected with second link of second coiling, and the 5th link of the 3rd coiling is electrically connected with the 3rd link of second coiling, and the 3rd coiling and second coiling are in parallel; When the input voltage on the former limit of transformer was 380V, the 4th link of the 3rd coiling was electrically connected with the 3rd link of second coiling, and the 3rd coiling and second coiling are in series.
When the input voltage on the former limit of transformer was 220V, the dividing potential drop of described first coiling was 60V; Second coiling is in parallel with the 3rd coiling, and the dividing potential drop that second coiling and the 3rd winds the line after in parallel is 160V; When the input voltage on the former limit of transformer was 380V, described first dividing potential drop that winds the line was 60V, and second coiling is in series with the 3rd coiling, and the dividing potential drop of second coiling and the 3rd coiling is 160V.
Be wound with the 4th coiling on the secondary of described transformer, the number of turn of described the 4th coiling is N2, and the 4th coiling has the 7th link and the 8th link.
Advantage of the present utility model: be divided into first coiling, second coiling and the 3rd coiling by coiling with the former limit of transformer, first coiling can dividing potential drop 60V, second coiling and the 3rd coiling dividing potential drop are 160V, by the corresponding matching of second coiling with the 3rd coiling, when the input voltage on former limit was 220V or 380V, the output voltage of transformer secondary remained constant; Attended operation is convenient, and winding method is simple, reduces the coiling cost, and is safe and reliable.
Description of drawings
Fig. 1 is the former limit and the secondary winding structure schematic diagram of power transformer.
Connection diagram when Fig. 2 is 220V for the former limit input voltage of power transformer.
Connection diagram when Fig. 3 is 380V for the former limit input voltage of power transformer.
Embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
The utility model transformer comprises former limit and secondary, all is wound with coil on described former limit and the secondary, and the former limit input voltage of described transformer is 220V or 380V, and the secondary of transformer is that output voltage requires to remain unchanged according to output voltage.
Be wound with primary coil on the iron core on the former limit of described transformer, described primary coil comprises first coiling, 11, second coiling the 12 and the 3rd coiling 13.The number of turn of described first coiling 11 is N11, and first coiling 11 has first link 1 and second link 2; The number of turn of second coiling 12 is N12, and the number of turn that second coiling 12 has second link 2 and 3, the three coilings 13 of the 3rd link is N13, and the 3rd coiling 13 has the 4th link 4 and the 5th link 5; Wherein the number of turn N12 of second coiling 12 equates with the number of turn N13 of the 3rd coiling 13.Secondary coil comprises the 4th coiling 14, and the number of turn of described the 4th coiling 14 is N2, and described the 4th coiling 14 has the 7th link 7 and the 8th link 8.
Ratio relation between the number of turn of described primary coil and the number of turn N2 of secondary coil should carry out corresponding setting according to the requirement of secondary coil output voltage.For keeping the secondary coil output voltage constant, when 220V voltage is imported on the former limit of transformer, the 4th link 4 of the 3rd coiling 13 is electrically connected with second link 2 of second coiling 12, the 5th link 5 of the 3rd coiling 13 is electrically connected with the 3rd link 3 of second coiling 12, second coiling the 12 and the 3rd coiling 13 is in parallel, making the former limit number of turn of described transformer is N1, N1=N11+N12 wherein, two links of 220V voltage link to each other with first link 1 and the 5th link 5 respectively, as shown in Figure 2; When second coiling the 12 and the 3rd coiling 13 was in parallel, the former limit number of turn and the secondary number of turn of transformer were respectively N1 and N2, original edge voltage and secondary voltage V
FThe pass be 220: N1=V
F: N2.
When 380V voltage was imported on the former limit of transformer, the 3rd link 3 of the 4th link 4 of the 3rd coiling 13 and second coiling 12 was electrically connected, and two links of input voltage 380V link to each other with first link 1 and the 5th link 5 respectively; At this moment, the number of turn N1=N11+N12+N13 on the former limit of transformer, the number of turn of secondary is N2, as shown in Figure 3.Thereby can access former limit of transformer and secondary voltage V
FThe pass be 380: N1=V
F: N2.In order to make secondary voltage V
FVoltage remain unchanged, the wind the line pass of 13 number of turn N12 of the number of turn N11 that therefore can access first coiling 11 and second coiling the 12 or the 3rd is 3N12=8N11.During concrete enforcement, the dividing potential drop of first coiling 11 is always 60V, and the dividing potential drop of second coiling the 12 and the 3rd coiling 13 is 160V; Because when the coil of transformer is in parallel, the dividing potential drop of coil is constant, and therefore when second coiling the 12 and the 3rd coiling 13 was in parallel, the common dividing potential drop of energy of second coiling the 12 and the 3rd coiling 13 was 160V, therefore 60+160=220V satisfies the voltage relationship of input voltage 220V.When second coiling the 12 and the 3rd coiling 13 was in series, second coiling the 12 and the 3rd coiling 13 is dividing potential drop 160V respectively, so 60+160+160=380V, satisfied the voltage relationship of input voltage 380V; Thereby can make the secondary output voltage V
FRemain unchanged.
As Fig. 2～shown in Figure 3: following transformer with 1000W, the input voltage on the former limit of transformer is 220V or 380V, the output voltage of transformer secondary does not become example for keeping 30V, specifies the winding structure of the utility model transformer primary coil.The number of turn of described first coiling, 11 correspondences is 54 circles, and the number of turn of second coiling, 12 correspondences is 144 circles, and the number of turn of the 3rd coiling 13 correspondences is 144 circles; The number of turn of the 4th coiling 14 of secondary correspondence is 27 circles.The coiling cross section of first coiling, 11 correspondences is 2mm
2, the coiling cross section of second coiling the 12 and the 3rd coiling 13 is 1mm
2The dividing potential drop of first coiling 11 is 60V, and second coiling the 12 and the 3rd 13 of coilings all can dividing potential drop 160V.As shown in Figure 2: when former limit input voltage was 220V, the 4th link 4 of described the 3rd coiling 13 was electrically connected with second link 2 of second coiling 12, and the 5th link 5 of the 3rd coiling 13 is electrically connected with the 3rd link 3 of second coiling 12; Two links of 220V voltage are connected on respectively on first link 1 and the 5th link 5, and dividing potential drop common in voltage 60V in first coiling 11 and second coiling the 12 and the 3rd coiling 13 is 160V, satisfies the voltage relationship between the input voltage of former limit.Because of on can access the former limit of transformer the number of turn be the N1=N11+N12=54+144=198 circle, according to the relation of transformer secondary voltage and original edge voltage, can access:
V
F＝(220×N2)/N1＝(220×27)/198＝30V (1)
As shown in Figure 3: when former limit input voltage was 380V, the 4th link 4 of described the 3rd coiling 13 was electrically connected with second link 2 of second coiling 12, and the 5th link 5 of the 3rd coiling 13 is electrically connected with the 3rd link 3 of second coiling 12; Two links of 380V voltage are connected on respectively on first link 1 and the 5th link 5.The number of turn that therefore can access the former limit of transformer is the N1=N11+N12=54+144+144=342 circle, according to the relation of transformer secondary voltage and original edge voltage, can access:
V
F＝(220×N2)/N1＝(380×27)/342＝30V (2)
Can obtain from above-mentioned, the pass of the number of turn N12 of the number of turn N11 of first coiling and second coiling 12 is 3N12=8N11.Therefore, when the former limit of transformer input voltage is 380 or during 220V, as long as change being connected and matching relationship of second coiling 12 and 13 of the 3rd coilings, the number of turn of change transformer primary coil just can make the output voltage V of transformer secondary
FRemain unchanged.
The utility model is divided into first coiling, second coiling and the 3rd coiling by the coiling with the former limit of transformer, first coiling can dividing potential drop 60V, second coiling and the 3rd coiling dividing potential drop are 160V, by the corresponding matching of second coiling with the 3rd coiling, when the input voltage on former limit was 220V or 380V, the output voltage of transformer secondary remained constant; Attended operation is convenient, and winding method is simple, reduces the coiling cost, can save cost 25%, and is safe and reliable.
Claims (3)
1. the winding structure of a power transformer primary coil is characterized in that: the primary coil of described transformer comprises first coiling, second coiling and the 3rd coiling, and the number of turn of described first coiling is N11, and first coiling has first link and second link; The number of turn of second coiling is N12, and second coiling has second link and the 3rd link; The number of turn of the 3rd coiling is N13, and the 3rd coiling has the 4th link and the 5th link; The number of turn N13 of described the 3rd coiling equates with the number of turn N12 of second coiling; The pass of the number of turn N12 of the number of turn N11 of first coiling and second coiling is N11: N12=3: 8; When the input voltage on the former limit of transformer was 220V, the 4th link of the 3rd coiling was electrically connected with second link of second coiling, and the 5th link of the 3rd coiling is electrically connected with the 3rd link of second coiling, and the 3rd coiling and second coiling are in parallel; When the input voltage on the former limit of transformer was 380V, the 4th link of the 3rd coiling was electrically connected with the 3rd link of second coiling, and the 3rd coiling and second coiling are in series.
2. the winding structure of power transformer primary coil according to claim 1 is characterized in that: when the input voltage on the former limit of transformer was 220V, the dividing potential drop of described first coiling was 60V; Second coiling is in parallel with the 3rd coiling, and the dividing potential drop that second coiling and the 3rd winds the line after in parallel is 160V; When the input voltage on the former limit of transformer was 380V, described first dividing potential drop that winds the line was 60V, and second coiling is in series with the 3rd coiling, and the dividing potential drop of second coiling and the 3rd coiling is 160V.
3. the winding structure of power transformer primary coil according to claim 1 is characterized in that: be wound with the 4th coiling on the secondary of described transformer, the number of turn of described the 4th coiling is N2, and the 4th coiling has the 7th link and the 8th link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020279943XU CN201754362U (en) | 2010-07-29 | 2010-07-29 | Winding structure of power transformer primary coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020279943XU CN201754362U (en) | 2010-07-29 | 2010-07-29 | Winding structure of power transformer primary coil |
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| Publication Number | Publication Date |
|---|---|
| CN201754362U true CN201754362U (en) | 2011-03-02 |
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ID=43622094
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020279943XU Expired - Fee Related CN201754362U (en) | 2010-07-29 | 2010-07-29 | Winding structure of power transformer primary coil |
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|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106920627A (en) * | 2012-12-19 | 2017-07-04 | Tdk株式会社 | Common-mode filter |
-
2010
- 2010-07-29 CN CN201020279943XU patent/CN201754362U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106920627A (en) * | 2012-12-19 | 2017-07-04 | Tdk株式会社 | Common-mode filter |
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| 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: 20110302 Termination date: 20110729 |