CN101901673A - 5/7 sloping four-seam lamination mode of three-phase three-limb transformer core - Google Patents
5/7 sloping four-seam lamination mode of three-phase three-limb transformer core Download PDFInfo
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- CN101901673A CN101901673A CN 201010178626 CN201010178626A CN101901673A CN 101901673 A CN101901673 A CN 101901673A CN 201010178626 CN201010178626 CN 201010178626 CN 201010178626 A CN201010178626 A CN 201010178626A CN 101901673 A CN101901673 A CN 101901673A
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Abstract
The invention discloses a 5/7 sloping four-seam lamination mode of a three-phase three-limb transformer core. Each lamination of the core includes a whole iron yoke isosceles trapezoid core lamination, a broken iron yoke isosceles trapezoid core lamination, a broken iron yoke right-angled trapezoid core lamination, a central limb right-angled trapezoid core lamination and two edge limb isosceles trapezoid core laminations in all, wherein the whole iron yoke isosceles trapezoid core lamination has two shapes with different length A1 and A2 in all; the broken iron yoke isosceles trapezoid core lamination has two shapes with different length B1 and B2 in all; the broken iron yoke right-angled trapezoid core lamination has two shapes with different length C1 and C2 in all; and four seams are respectively formed at the four corners of the core as each layer of core lamination of each level of cores selects different shape combination. The transformer core laminated by the lamination mode not only saves the core materials but also reduces the no-load loss of the transformer and optimizes both the cost and the performance.
Description
Technical field
The present invention relates to power transformer iron core, especially the three-phase three-column power transformer iron core.
Background technology
The iron core of power transformer is to be made of very thin core lamination a slice a slice stack, and the stack mode of core lamination is the key factor that influences transformer material consumption and no-load loss and no-load current.What traditional three-phase three-column power transformer iron core adopted is complete oblique three seam stack modes.Every grade of iron core has four kinds of core lamination sheet types: shown in Fig. 3, Fig. 4-1～Fig. 4-4, the iron yoke heart lamination 21 that constitutes upper and lower iron yoke unshakable in one's determination is a kind of types, the side column core lamination 22 that constitutes left and right side column unshakable in one's determination is a kind of types, and the core lamination that constitutes center pillar unshakable in one's determination has center pillar symmetry core lamination 23 and 24 two kinds of sheet types of the eccentric core lamination of center pillar.Every layer of core lamination needs 21 two of iron yoke heart laminations, 22 two of side column core laminations, one of center pillar core lamination altogether.During the stack core lamination, the core lamination of every layer formation center pillar unshakable in one's determination is the eccentric core lamination 24 of stack center pillar (going up sharp left avertence), center pillar symmetry core lamination 23, the eccentric core lamination 24 of center pillar (going up sharp right avertence) successively, make the butt joint gap of three layers of adjacent core lamination be misplaced mutually, constitute three seams, promptly above-mentioned complete oblique three seam stack modes.The advantage of this stack mode is that no-load loss and no-load current are little, but this stack mode is because upper and lower iron yoke heart lamination middle part needs to dash one " V " v notch v, and high material consumption has increased the production cost of transformer.
At present, power transformer conventional many employings 5/7ths oblique two seam core lamination modes unshakable in one's determination, every grade of iron core of this stack mode has five kinds of core lamination sheet types: shown in Fig. 5, Fig. 6-1～Fig. 6-5, the core lamination that constitutes upper and lower iron yoke unshakable in one's determination is whole iron yoke isosceles trapezoid core lamination 31, disconnected iron yoke isosceles trapezoid core lamination 32 and 33 types of disconnected iron yoke right-angled trapezium core lamination, what constitute left and right side column unshakable in one's determination is side column isosceles trapezoid core lamination 34, and what constitute center pillar unshakable in one's determination is center pillar right-angled trapezium core lamination 35.Every layer of core lamination need be put in order iron yoke isosceles trapezoid core lamination 31, disconnected iron yoke isosceles trapezoid folded 32, disconnected iron yoke right-angled trapezium core lamination 33 unshakable in one's determination, center pillar right-angled trapezium core lamination 35 each altogether, and 34 two of side column isosceles trapezoid core laminations amount to six.The center pillar right-angled trapezium core lamination 35 of every layer formation center pillar unshakable in one's determination, its oblique angle left avertence, right avertence, right avertence, left avertence down up down up successively during stack, the core lamination of all the other sheet types, location according to this center pillar right-angled trapezium core lamination 35, corresponding to being connected into " day " shaped iron core that lies low, make the adjacent two layers core lamination be misplaced mutually, constitute two seams, be i.e. two seam core lamination modes in butt joint gap unshakable in one's determination four jiaos.It is scarce that this stack mode has avoided the iron yoke to dash, and saved core material.But because the seam number very little, makes core lamination excessive at the local magnetic density of butt joint gap location, cause transformer noload losses and no-load current to increase, compare, can not take into account cost and optimization in Properties equally with traditional complete oblique three seam stack modes.
Summary of the invention
The objective of the invention is to: a kind of three-phase three-column transformer core 5/7ths oblique four-seam stack modes are provided, use the transformer core of this mode stack, both saved core material, reduced the no-load loss of transformer again.
For achieving the above object, the present invention can take following technical proposals:
Three-phase three-column transformer core 5/7ths oblique four-seam stack modes of the present invention, each stack layer unshakable in one's determination has six core laminations, each one of whole iron yoke isosceles trapezoid core lamination, disconnected iron yoke isosceles trapezoid core lamination, disconnected iron yoke right-angled trapezium core lamination, center pillar right-angled trapezium core lamination, two of side column isosceles trapezoid core laminations is characterized in that the following step:
Described whole iron yoke isosceles trapezoid core lamination has A1, two kinds of sheet types that A2 length is different, and wherein whole iron yoke isosceles trapezoid core lamination A2 lacks an adjacent bed joint distance than whole iron yoke isosceles trapezoid core lamination A1
Doubly; Described disconnected iron yoke isosceles trapezoid core lamination has B1, two kinds of sheet types that B2 length is different, and it interrupts iron yoke isosceles trapezoid core lamination B2 grows an adjacent bed joint distance than disconnected iron yoke isosceles trapezoid core lamination B1
Doubly; Described disconnected iron yoke right-angled trapezium core lamination has C1, two kinds of sheet types that C2 length is different, and it interrupts iron yoke right-angled trapezium core lamination C2 grows an adjacent bed joint distance than disconnected iron yoke right-angled trapezium core lamination C1
Doubly; Described center pillar right-angled trapezium core lamination has a kind of type, and described side column isosceles trapezoid core lamination has a kind of type,
Step 1: the ground floor of every grade of iron core and the second layer are selected each one of whole iron yoke isosceles trapezoid core lamination A1, disconnected iron yoke isosceles trapezoid core lamination B1, disconnected iron yoke right-angled trapezium core lamination C1, center pillar right-angled trapezium core lamination respectively for use, two of side column isosceles trapezoid core laminations, stack constitutes seam a1 and seam a2 at four jiaos unshakable in one's determination respectively in the usual way;
Step 2: select each one of whole iron yoke isosceles trapezoid core lamination A2, disconnected iron yoke isosceles trapezoid core lamination B2, disconnected iron yoke right-angled trapezium core lamination C2, center pillar right-angled trapezium core lamination respectively for use for the 3rd layer and the 4th layer, two of side column isosceles trapezoid core laminations, stack constitutes seam a3 and seam a4 at four jiaos unshakable in one's determination respectively in the usual way;
Step 3: repeating step one and step 2 successively, and routinely the corresponding checker center pillar of stack mode right-angled trapezium core lamination up and down towards with about deflection, while is the described iron yoke heart lamination sheet type of the corresponding checker of stack mode upper and lower iron yoke unshakable in one's determination routinely, reaches desired core dimensions until stack
Use the transformer core of stack mode stack of the present invention, owing to all constitute four seams at four angles of iron core, compare with existing stack mode, both not be used in iron yoke upper punch " V " v notch v, saved core material, increased seam number unshakable in one's determination again, made core lamination reduce relatively and be evenly distributed at the local magnetic density of the butt joint gap location at four angles, transformer noload losses and no-load current reduce, and have taken into account cost and optimization in Properties.
Description of drawings
Fig. 1 is to use the structural representation of 5/7ths oblique four-seam transformer cores of the inventive method stack.
Fig. 2-the 1st, the A portion structure for amplifying schematic diagram of Fig. 1.
Fig. 2-2, Fig. 2-3, Fig. 2-4, Fig. 2-5, Fig. 2-6, Fig. 2-7, Fig. 2-8, Fig. 2-9 are respectively the structural representations of the side column isosceles trapezoid core lamination, center pillar right-angled trapezium core lamination of Fig. 1, whole iron yoke isosceles trapezoid core lamination A1, whole iron yoke isosceles trapezoid core lamination A2, disconnected iron yoke isosceles trapezoid core lamination B1, disconnected iron yoke isosceles trapezoid core lamination B2, disconnected iron yoke right-angled trapezium core lamination C1, disconnected iron yoke right-angled trapezium core lamination C2.
Fig. 3 is to use the complete oblique three seam transformer iron core structure schematic diagrames of traditional stack mode stack.
Fig. 4-1～Fig. 4-4 is respectively the symmetrical core lamination of iron yoke heart lamination, side column core lamination, center pillar of Fig. 3, the structural representation of the eccentric core lamination of center pillar.
Fig. 5 is to use 5/7ths oblique two seam transformer iron core structure schematic diagrames of conventional stack mode stack.
Fig. 6-1～Fig. 6-5 is respectively that the disconnected iron yoke heart of whole iron yoke isosceles trapezoid core lamination, isosceles trapezoid of Fig. 5 folds 32, the structural representation of break iron yoke right-angled trapezium core lamination 33, side column isosceles trapezoid core lamination, center pillar right-angled trapezium core lamination.
Embodiment
As described in Fig. 1, Fig. 2-1, Fig. 2-2～Fig. 2-9, three-phase three-column transformer core 5/7ths oblique four-seam stack modes of the present invention, each unshakable in one's determination stack layer has six core laminations: each one of whole iron yoke isosceles trapezoid core lamination, disconnected iron yoke isosceles trapezoid core lamination, disconnected iron yoke right-angled trapezium core lamination, center pillar right-angled trapezium core lamination (12), (11) two of side column isosceles trapezoid core laminations.Described whole iron yoke isosceles trapezoid core lamination has A1 (13), two kinds of sheet types that A2 (14) length is different, wherein whole iron yoke isosceles trapezoid core lamination A2 (14) than the short adjacent bed joint of whole iron yoke isosceles trapezoid core lamination A1 (13) apart from m's
Doubly, promptly short
Wherein m is the seam distance between adjacent layer; Described disconnected iron yoke isosceles trapezoid core lamination has B1 (15), two kinds of sheet types that B2 (16) length is different, and it interrupts iron yoke isosceles trapezoid core lamination B2 (16) than the long adjacent bed joint distance of disconnected iron yoke isosceles trapezoid core lamination B1 (15)
Doubly, promptly long
Described disconnected iron yoke right-angled trapezium core lamination has C1 (17), two kinds of sheet types that C2 (18) length is different, and it interrupts iron yoke right-angled trapezium core lamination C2 (18) than the long adjacent bed joint distance of disconnected iron yoke right-angled trapezium core lamination C1 (17)
Doubly; Described center pillar right-angled trapezium core lamination (12) has a kind of type, and described side column isosceles trapezoid core lamination (11) has a kind of type,
The stack step 1: the ground floor of every grade of iron core and the second layer are selected each one of whole iron yoke isosceles trapezoid core lamination A1 (13), disconnected iron yoke isosceles trapezoid core lamination B1 (15), disconnected iron yoke right-angled trapezium core lamination C1 (17), center pillar right-angled trapezium core lamination (12) respectively for use, (11) two of side column isosceles trapezoid core laminations
Wherein ground floor stack mode is: the acute angle of center pillar right-angled trapezium core lamination (12) up and left avertence, the right-angle side of the hypotenuse of disconnected iron yoke isosceles trapezoid core lamination B1 (15), disconnected iron yoke right-angled trapezium core lamination C1 (17) docks with its upper end respectively, constitute upper yoke unshakable in one's determination, dock side column isosceles trapezoid core lamination (11) then respectively downwards from these upper yoke two ends, two hypotenuses of whole iron yoke isosceles trapezoid core lamination A1 (13) are docked with the lower end hypotenuse of two side column isosceles trapezoid core laminations (11) respectively, constitute " day " font that lies low;
Wherein second layer stack mode and ground floor are basic identical, unique difference is: the acute angle of center pillar right-angled trapezium core lamination (12) down and right avertence, make the adjacent two layers core lamination be misplaced mutually, constitute seam a1 (19) and seam a2 (20) in butt joint gap unshakable in one's determination four jiaos;
Step 2: select each one of whole iron yoke isosceles trapezoid core lamination A2 (14), disconnected iron yoke isosceles trapezoid core lamination B2 (16), disconnected iron yoke right-angled trapezium core lamination C2 (18), center pillar right-angled trapezium core lamination (12) respectively for use for the 3rd layer and the 4th layer, (11) two of side column isosceles trapezoid core laminations, according to the stack mode stack of step 1, constitute seam a3 (21) and seam a4 (22) at four jiaos unshakable in one's determination respectively;
Step 3: repeating step one and step 2 successively, and corresponding checker center pillar right-angled trapezium core lamination (12) up and down towards with about deflection, the sheet type of simultaneously corresponding checker upper and lower iron yoke unshakable in one's determination until finishing every grade of iron core, reaches desired stack size unshakable in one's determination.
Each layer of transformer core core lamination all constitutes four seams because of selecting different sheet type combinations for use at four jiaos unshakable in one's determination.The sheet molded dimension of whole iron yoke of the present invention and disconnected iron yoke changes; it is a kind of not only to be confined to above-mentioned embodiment; inspired by four-seam stack mode of the present invention and change other size of, and the simple adjustment of stack order, all within protection scope of the present invention.
Claims (1)
1. three-phase three-column transformer core 5/7ths oblique four-seam stack modes, each stack layer unshakable in one's determination has six core laminations, each one of whole iron yoke isosceles trapezoid core lamination, disconnected iron yoke isosceles trapezoid core lamination, disconnected iron yoke right-angled trapezium core lamination, center pillar right-angled trapezium core lamination (12), (11) two of side column isosceles trapezoid core laminations is characterized in that the following step:
Described whole iron yoke isosceles trapezoid core lamination has A1 (13), two kinds of sheet types that A2 (14) length is different, and wherein whole iron yoke isosceles trapezoid core lamination A2 (14) is than the short adjacent bed joint distance of whole iron yoke isosceles trapezoid core lamination A1 (13)
Doubly; Described disconnected iron yoke isosceles trapezoid core lamination has B1 (15), two kinds of sheet types that B2 (16) length is different, and it interrupts iron yoke isosceles trapezoid core lamination B2 (16) than the long adjacent bed joint distance of disconnected iron yoke isosceles trapezoid core lamination B1 (15)
Doubly; Described disconnected iron yoke right-angled trapezium core lamination has C1 (17), two kinds of sheet types that C2 (18) length is different, and it interrupts iron yoke right-angled trapezium core lamination C2 (18) than the long adjacent bed joint distance of disconnected iron yoke right-angled trapezium core lamination C1 (17)
Doubly; Described center pillar right-angled trapezium core lamination (12) has a kind of type, and described side column isosceles trapezoid core lamination (11) has a kind of type,
Step 1: the ground floor of every grade of iron core and the second layer are selected each one of whole iron yoke isosceles trapezoid core lamination A1 (13), disconnected iron yoke isosceles trapezoid core lamination B1 (15), disconnected iron yoke right-angled trapezium core lamination C1 (17), center pillar right-angled trapezium core lamination (12) respectively for use, (11) two of side column isosceles trapezoid core laminations, stack constitutes seam a1 (19) and seam a2 (20) at four jiaos unshakable in one's determination respectively in the usual way;
Step 2: select each one of whole iron yoke isosceles trapezoid core lamination A2 (14), disconnected iron yoke isosceles trapezoid core lamination B2 (16), disconnected iron yoke right-angled trapezium core lamination C2 (18), center pillar right-angled trapezium core lamination (12) respectively for use for the 3rd layer and the 4th layer, (11) two of side column isosceles trapezoid core laminations, stack constitutes seam a3 (21) and seam a4 (22) at four jiaos unshakable in one's determination respectively in the usual way;
Step 3: repeating step one and step 2 successively, and routinely the corresponding checker center pillar of stack mode right-angled trapezium core lamination (12) up and down towards with about deflection, while is the described iron yoke heart lamination sheet type of the corresponding checker of stack mode upper and lower iron yoke unshakable in one's determination routinely, reaches desired core dimensions until stack.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101786263A CN101901673B (en) | 2010-05-21 | 2010-05-21 | 5/7 sloping four-seam lamination mode of three-phase three-limb transformer core |
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| CN2010101786263A CN101901673B (en) | 2010-05-21 | 2010-05-21 | 5/7 sloping four-seam lamination mode of three-phase three-limb transformer core |
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| CN101901673A true CN101901673A (en) | 2010-12-01 |
| CN101901673B CN101901673B (en) | 2011-12-21 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360854A (en) * | 2011-08-02 | 2012-02-22 | 唐山尚新融大电子产品有限公司 | Planar transformer with U-shaped magnetic cores |
| CN104810144A (en) * | 2015-05-20 | 2015-07-29 | 江苏汇安隆电器有限公司 | Iron core laminating process |
| CN109192466A (en) * | 2018-11-08 | 2019-01-11 | 山东电工电气集团智能电气有限公司 | transformer core and transformer |
| CN112041946A (en) * | 2018-05-11 | 2020-12-04 | Abb电网瑞士股份公司 | Magnetic core for electromagnetic induction device, electromagnetic induction device including the same, and method of manufacturing magnetic core |
| CN113130197A (en) * | 2021-03-24 | 2021-07-16 | 无锡普天铁心股份有限公司 | Stacking method of three-phase three-column non-stacked upper yoke iron core |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4482880A (en) * | 1981-09-10 | 1984-11-13 | Mitsubishi Denki Kabushiki Kaisha | Iron core for three-phase electromagnetic induction machine |
| CN101151687A (en) * | 2005-03-30 | 2008-03-26 | Abb技术有限公司 | A transformer having a stacked core with a split leg and a method of making the same |
-
2010
- 2010-05-21 CN CN2010101786263A patent/CN101901673B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4482880A (en) * | 1981-09-10 | 1984-11-13 | Mitsubishi Denki Kabushiki Kaisha | Iron core for three-phase electromagnetic induction machine |
| CN101151687A (en) * | 2005-03-30 | 2008-03-26 | Abb技术有限公司 | A transformer having a stacked core with a split leg and a method of making the same |
Non-Patent Citations (1)
| Title |
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| 《变压器》 20010825 朱木根等 三相三柱、五柱全斜接缝铁心的片形和选择 , 第08期 2 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360854A (en) * | 2011-08-02 | 2012-02-22 | 唐山尚新融大电子产品有限公司 | Planar transformer with U-shaped magnetic cores |
| CN104810144A (en) * | 2015-05-20 | 2015-07-29 | 江苏汇安隆电器有限公司 | Iron core laminating process |
| CN112041946A (en) * | 2018-05-11 | 2020-12-04 | Abb电网瑞士股份公司 | Magnetic core for electromagnetic induction device, electromagnetic induction device including the same, and method of manufacturing magnetic core |
| CN109192466A (en) * | 2018-11-08 | 2019-01-11 | 山东电工电气集团智能电气有限公司 | transformer core and transformer |
| CN109192466B (en) * | 2018-11-08 | 2024-02-27 | 山东电工电气集团智能电气有限公司 | Transformer core and transformer |
| CN113130197A (en) * | 2021-03-24 | 2021-07-16 | 无锡普天铁心股份有限公司 | Stacking method of three-phase three-column non-stacked upper yoke iron core |
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