CN201112118Y - Scott transformer - Google Patents

Scott transformer Download PDF

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Publication number
CN201112118Y
CN201112118Y CNU2007201719760U CN200720171976U CN201112118Y CN 201112118 Y CN201112118 Y CN 201112118Y CN U2007201719760 U CNU2007201719760 U CN U2007201719760U CN 200720171976 U CN200720171976 U CN 200720171976U CN 201112118 Y CN201112118 Y CN 201112118Y
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winding
magnetic
windings
transformer
transformers
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王奉瑾
张心益
任文
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ZHONGSHAN PURUNSI POWER SUPPLY EQUIPMENT TECHNOLOGY Co Ltd
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Shenzhen Putly Optic Electronic Tech Co Ltd
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Abstract

The utility model discloses a Scott transformer, which comprises two transformers, wherein the primary coil of one transformer is connected with the middle tap of the primary coil of the other transformer, and is characterized in that a plurality of groups of windings forming the two transformers are wound on the same group of magnetic materials; the magnetic material is composed of a plurality of magnetic cores; the plurality of magnetic cores form a plurality of magnetic circuits. Adopt the utility model discloses, with two current independent magnetic cores, become a plurality of little magnetic cores, reduced the volume of transformer, alleviateed weight to save the material, reduced manufacturing cost. And because the leakage inductance of the transformer of one magnetic system is smaller than that of the transformers of two independent magnetic systems, the loss of the Scott transformer is reduced, and the efficiency is improved by nearly 20 percent.

Description

一种斯考特变压器 A Scott Transformer

技术领域 technical field

本实用新型涉及变压器领域,尤其涉及一种斯考特变压器。The utility model relates to the field of transformers, in particular to a Scott transformer.

背景技术 Background technique

斯考特变压器通常是由二个单相变压器组成。将一台变压器高压绕组的末端联接在另一台高压绕组的中央,便可组成″T″形结的三相高压绕组。每个低压绕组均是简单的单相绕组,它们之间没有电的联系。它们的电压和电流与普通单相变压器相同。但每个高压组绕组和电流却与普通单相变压器不同。Scott transformers are usually composed of two single-phase transformers. Connect the end of one transformer high-voltage winding to the center of another high-voltage winding to form a "T"-shaped three-phase high-voltage winding. Each low voltage winding is a simple single phase winding with no electrical connection between them. They have the same voltage and current as normal single-phase transformers. But the winding and current of each high-voltage group are different from ordinary single-phase transformers.

由于现有斯考特变压器采用两个独立磁芯,在体积和重量上都非常大,而且两个独立磁性系统的变压器的漏感较大,使现有斯考特变压器的损耗较大。Since the existing Scott transformer adopts two independent magnetic cores, which are very large in volume and weight, and the leakage inductance of the transformer of the two independent magnetic systems is relatively large, the loss of the existing Scott transformer is relatively large.

实用新型内容Utility model content

本实用新型所要解决的技术问题在于,提供一种斯考特变压器。这种变压器的体积小、重量轻、成本低,漏感的损耗较小。The technical problem to be solved by the utility model is to provide a Scott transformer. This kind of transformer is small in size, light in weight, low in cost, and the loss of leakage inductance is small.

为了解决上述技术问题,本实用新型的实施例提供了一种斯考特变压器,包括:两个变压器,一个变压器的初级线圈与另一个变压器的初级线圈的中间抽头连接,构成所述两个变压器的多组绕组绕制在同一组磁性材料上;所述一组磁性材料由多个磁芯组成;所述多个磁芯形成多个磁路。In order to solve the above-mentioned technical problems, the embodiment of the utility model provides a Scott transformer, including: two transformers, the primary coil of one transformer is connected with the center tap of the primary coil of the other transformer, forming the two transformers Multiple groups of windings are wound on the same group of magnetic materials; the group of magnetic materials is composed of a plurality of magnetic cores; and the plurality of magnetic cores form a plurality of magnetic circuits.

本实用新型的实施例的有益效果:由于将现有的两个独立磁芯,变为多个小磁芯,减小了变压器的体积,减轻了重量,从而节省了材料,降低了生产成本。还由于一个磁性系统变压器的漏感小于两个独立磁性系统的变压器的漏感,减小了斯考特变压器的损耗,在效率方面,提高近20%。Beneficial effects of the embodiment of the utility model: Since the existing two independent magnetic cores are changed into multiple small magnetic cores, the volume and weight of the transformer are reduced, thereby saving materials and reducing production costs. Also, because the leakage inductance of a magnetic system transformer is smaller than that of two independent magnetic system transformers, the loss of the Scott transformer is reduced, and the efficiency is increased by nearly 20%.

附图说明 Description of drawings

图1是本实用新型的斯考特变压器的电路原理图;Fig. 1 is the circuit schematic diagram of the Scott transformer of the utility model;

图2是本实用新型的斯考特变压器的一个实施例的结构示意图;Fig. 2 is the structural representation of an embodiment of the Scott transformer of the present utility model;

图3是本实用新型的斯考特变压器的另一个实施例的结构示意图。Fig. 3 is a structural schematic diagram of another embodiment of the Scott transformer of the present invention.

具体实施方式 Detailed ways

下面参考附图对本实用新型的优选实施例进行描述。在所参照的附图中,不同的图中相同或相似的部件使用相同的附图标号来表示。Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. In the referenced drawings, the same reference numerals are used for the same or similar components in different drawings.

参见图1,为本实用新型的斯考特变压器的电路原理图。斯考特变压器有两个变压器,一个为α座变压器,另一个为β座变压器;α座变压器的初级线圈与3座变压器的初级线圈的中间抽头1连接,α座变压器的次级线圈与3座变压器的次级线圈串联,β座变压器的次级线圈并联一个移相电容。从而实现斯考特变压器将三相电转为单项电。Referring to Fig. 1, it is the schematic circuit diagram of the Scott transformer of the present utility model. The Scott transformer has two transformers, one is the α-seat transformer and the other is the β-seat transformer; the primary coil of the α-seat transformer is connected to the middle tap 1 of the primary coil of the 3-seat transformer, and the secondary coil of the α-seat transformer is connected to the 3 The secondary coil of the β-seat transformer is connected in series, and the secondary coil of the β-seat transformer is connected in parallel with a phase-shifting capacitor. In this way, the Scott transformer can convert three-phase electricity into single-phase electricity.

参见图2,为本实用新型的斯考特变压器的一个实施例的结构示意图。如图2所示,本实施例的斯考特变压器包括5个磁芯形成的5个磁路(磁路1、磁路2、磁路3、磁路4以及磁路5);以及绕制在所述5个磁路上的三组绕组L1、L2和L2’,其中绕组L1连续依次或穿插绕制在所述5个磁路的磁路1、磁路2、磁路3、磁路4以及磁路5上,绕组L1的每匝绕组为单磁路绕组;绕组L2同时绕制在磁路1和磁路2上,绕组L2的每匝绕组为双磁路绕组;绕组L2’同时绕制在磁路4和磁路5上,绕组L2’的每匝绕组为双磁路绕组。其中绕组L2’和L2串联,且绕组L2’的感应磁通与绕组L1在所述绕组L2上产生的感应磁通相反。因此,绕组L2’形成了L1和L2间的补偿绕组。具体实现中,绕组L2’也可与绕组L1串联,当与L1串联时,绕组L2’的感应磁通同样需要与绕组L1在所述绕组L2上产生的感应磁通相反。绕组L1、L2以及L2’可包括一个初级绕组和至少一个次级绕组;绕组L1、L2以及L2’可以为线圈绕组、平面导体绕组或者印刷电路板制成的等效绕组中任意一种,或者所述各绕组的组合。其中,所述线圈绕组由导线在垂直磁路方向上缠绕在磁芯上,导线可以是单根,或者多根并排绕制,采用的材料可以是铜、铝等各种导电线,也可以采用铜箔、铝箔等各种导电箔带绕制;所述平面导体绕组由薄形导体材料折叠而成;当采用印刷电路板制成的等效绕组时,用来制作等效绕组的印刷电路板可以是一层或多层。另外,本实施例的磁芯可以为U形磁芯、CD铁心、圆形芯柱磁芯或者带中心柱的磁芯。Referring to FIG. 2 , it is a schematic structural diagram of an embodiment of the Scott transformer of the present invention. As shown in Figure 2, the Scott transformer of the present embodiment comprises 5 magnetic circuits (magnetic circuit 1, magnetic circuit 2, magnetic circuit 3, magnetic circuit 4 and magnetic circuit 5) that 5 magnetic cores form; Three sets of windings L1, L2 and L2' on the five magnetic circuits, wherein the winding L1 is wound continuously or interspersedly on the magnetic circuit 1, the magnetic circuit 2, the magnetic circuit 3 and the magnetic circuit 4 of the five magnetic circuits And on the magnetic circuit 5, each turn of the winding L1 is a single magnetic circuit winding; the winding L2 is wound on the magnetic circuit 1 and the magnetic circuit 2 at the same time, and each turn of the winding L2 is a double magnetic circuit winding; the winding L2' is simultaneously wound Made on the magnetic circuit 4 and the magnetic circuit 5, each turn of the winding L2' is a double magnetic circuit winding. The windings L2' and L2 are connected in series, and the induced magnetic flux of the winding L2' is opposite to the induced magnetic flux generated by the winding L1 on the winding L2. Thus, winding L2' forms a compensating winding between L1 and L2. In a specific implementation, the winding L2' can also be connected in series with the winding L1, and when connected in series with L1, the induced magnetic flux of the winding L2' also needs to be opposite to the induced magnetic flux generated by the winding L1 on the winding L2. The windings L1, L2 and L2' may include a primary winding and at least one secondary winding; the windings L1, L2 and L2' may be coil windings, planar conductor windings or equivalent windings made of printed circuit boards, or combination of the windings. Wherein, the coil winding is wound on the magnetic core by wires in the direction perpendicular to the magnetic circuit. The wires can be single or multiple wires are wound side by side. Copper foil, aluminum foil and other conductive foil strips are wound; the planar conductor winding is folded from a thin conductor material; when the equivalent winding made of a printed circuit board is used, the printed circuit board used to make the equivalent winding Can be one or more layers. In addition, the magnetic core in this embodiment may be a U-shaped magnetic core, a CD core, a circular core post core or a magnetic core with a central post.

本实施例中,由于绕组L1在所述多磁路变压器的每个磁路上均有绕组,而绕组L2仅在磁路1和磁路2上有绕组,则绕组L1和L2间会产生互感,因此,本实施例在绕组L2上串联补偿绕组L2’来抵消L1在L2上产生的互感,最终满足绕组L1和L2串联L2’后的绕组间不存在互感。则L1可独立形成一个变压器、L2连同L2’可独立形成一个变压器。最终形成的两个变压器按照图1的电路连接方式,形成一个完整的斯考特变压器。In this embodiment, since the winding L1 has windings on each magnetic circuit of the multi-magnetic circuit transformer, and the winding L2 only has windings on the magnetic circuit 1 and the magnetic circuit 2, mutual inductance will be generated between the windings L1 and L2, Therefore, in this embodiment, the compensation winding L2' is connected in series with the winding L2 to offset the mutual inductance generated by L1 on L2, and ultimately there is no mutual inductance between the windings after the windings L1 and L2 are connected in series with L2'. Then L1 can independently form a transformer, and L2 together with L2' can independently form a transformer. The final formed two transformers are connected according to the circuit shown in Figure 1 to form a complete Scott transformer.

参见图3,为本实用新型的斯考特变压器的另一个实施例的结构示意图。如图3所示,本实施例的斯考特变压器包括5个磁芯形成的5个磁路(磁路1、磁路2、磁路3、磁路4以及磁路5);以及绕制在所述5个磁路上的三组绕组L1、L2和L2’,其中绕组L1连续依次或穿插绕制在所述5个磁路的磁路1、磁路2、磁路3以及磁路4以及磁路5上,绕组L1的每匝绕组为单磁路绕组;绕组L2同时绕制在磁路1、磁路2以及磁路3上,绕组L2的每匝绕组为三磁路绕组;绕组L2’绕制在磁路3上,绕组L2’的每匝绕组为双磁路绕组。其中绕组L2’和L2串联,且绕组L2’的感应磁通与绕组L1在所述绕组L2上产生的感应磁通相反。因此,绕组L2’形成了L1和L2间的补偿绕组。具体实现中,绕组L2’也可与绕组L1串联,当与L1串联时,绕组L2’的感应磁通同样需要与绕组L1在所述绕组L2上产生的感应磁通相反。绕组L1、L2以及L2’可包括一个初级绕组和至少一个次级绕组;绕组L1、L2以及L2’可以为线圈绕组、平面导体绕组或者印刷电路板制成的等效绕组中任意一种,或者所述各绕组的组合。其中,所述线圈绕组由导线在垂直磁路方向上缠绕在磁芯上,导线可以是单根,或者多根并排绕制,采用的材料可以是铜、铝等各种导电线,也可以采用铜箔、铝箔等各种导电箔带绕制;所述平面导体绕组由薄形导体材料折叠而成;当采用印刷电路板制成的等效绕组时,用来制作等效绕组的印刷电路板可以是一层或多层。另外,本实施例的磁芯可以为U形磁芯、CD铁心、圆形芯柱磁芯或者带中心柱的磁芯。Referring to FIG. 3 , it is a schematic structural diagram of another embodiment of the Scott transformer of the present invention. As shown in Figure 3, the Scott transformer of the present embodiment comprises 5 magnetic circuits (magnetic circuit 1, magnetic circuit 2, magnetic circuit 3, magnetic circuit 4 and magnetic circuit 5) that 5 magnetic cores form; Three sets of windings L1, L2 and L2' on the five magnetic circuits, wherein the winding L1 is wound successively or interspersedly on the magnetic circuit 1, the magnetic circuit 2, the magnetic circuit 3 and the magnetic circuit 4 of the five magnetic circuits And on the magnetic circuit 5, each turn of the winding L1 is a single magnetic circuit winding; the winding L2 is wound on the magnetic circuit 1, the magnetic circuit 2 and the magnetic circuit 3 at the same time, and each turn of the winding L2 is a three-magnetic circuit winding; the winding L2' is wound on the magnetic circuit 3, and each turn of the winding L2' is a double magnetic circuit winding. The windings L2' and L2 are connected in series, and the induced magnetic flux of the winding L2' is opposite to the induced magnetic flux generated by the winding L1 on the winding L2. Thus, winding L2' forms a compensating winding between L1 and L2. In a specific implementation, the winding L2' can also be connected in series with the winding L1, and when connected in series with L1, the induced magnetic flux of the winding L2' also needs to be opposite to the induced magnetic flux generated by the winding L1 on the winding L2. The windings L1, L2 and L2' may include a primary winding and at least one secondary winding; the windings L1, L2 and L2' may be coil windings, planar conductor windings or equivalent windings made of printed circuit boards, or combination of the windings. Wherein, the coil winding is wound on the magnetic core by wires in the direction perpendicular to the magnetic circuit. The wires can be single or multiple wires are wound side by side. Copper foil, aluminum foil and other conductive foil strips are wound; the planar conductor winding is folded from a thin conductor material; when the equivalent winding made of a printed circuit board is used, the printed circuit board used to make the equivalent winding Can be one or more layers. In addition, the magnetic core in this embodiment may be a U-shaped magnetic core, a CD core, a circular core post core or a magnetic core with a central post.

本实施例中,由于绕组L1在所述多磁路变压器的每个磁路上均有绕组,而绕组L2仅在磁路1、磁路2以及磁路3上有绕组,则绕组L1和L2间会产生互感,因此,本实施例在绕组L2上串联补偿绕组L2’来抵消L1在L2上产生的互感,最终满足绕组L1和L2串联L2’后的绕组间不存在互感。则L1可独立形成一个变压器、L2连同L2’可独立形成一个变压器。最终形成的两个变压器按照图1的电路连接方式,形成一个完整的斯考特变压器。In this embodiment, since the winding L1 has windings on each magnetic circuit of the multi-magnetic circuit transformer, and the winding L2 only has windings on the magnetic circuit 1, the magnetic circuit 2, and the magnetic circuit 3, the distance between the windings L1 and L2 is Mutual inductance will be generated. Therefore, in this embodiment, the compensation winding L2' is connected in series with the winding L2 to offset the mutual inductance generated by L1 on L2, and ultimately there is no mutual inductance between the windings after the windings L1 and L2 are connected in series with L2'. Then L1 can independently form a transformer, and L2 together with L2' can independently form a transformer. The final formed two transformers are connected according to the circuit shown in Figure 1 to form a complete Scott transformer.

本实用新型实施例由于将现有的两个独立磁芯,变为多个小磁芯,减小了变压器的体积,减轻了重量,从而节省了材料,降低了生产成本。还由于一个磁性系统变压器的漏感小于两个独立磁性系统的变压器的漏感,减小了斯考特变压器的损耗,在效率方面,提高近20%。The embodiment of the utility model changes the existing two independent magnetic cores into multiple small magnetic cores, which reduces the volume and weight of the transformer, thereby saving materials and reducing production costs. Also, because the leakage inductance of a magnetic system transformer is smaller than that of two independent magnetic system transformers, the loss of the Scott transformer is reduced, and the efficiency is increased by nearly 20%.

以上所述是本实用新型的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也视为本发明的保护范围。The foregoing is a preferred embodiment of the present utility model. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principle of the present invention. It is regarded as the protection scope of the present invention.

Claims (9)

1、一种斯考特变压器,包括两个变压器,一个变压器的初级线圈与另一个变压器的初级线圈的中间抽头连接,其特征在于,构成所述两个变压器的多组绕组绕制在同一组磁性材料上;所述磁性材料由多个磁芯组成;所述多个磁芯形成多个磁路。1. A Scott transformer comprising two transformers, the primary coil of one transformer is connected to the center tap of the primary coil of another transformer, it is characterized in that the multiple groups of windings forming the two transformers are wound in the same group on the magnetic material; the magnetic material is composed of a plurality of magnetic cores; the plurality of magnetic cores form a plurality of magnetic circuits. 2、如权利要求1所述的斯考特变压器,其特征在于,所述的构成所述两个变压器的多组绕组包括第一绕组和第二绕组;2. The Scott transformer according to claim 1, characterized in that, the multiple groups of windings forming the two transformers include a first winding and a second winding; 所述第一绕组连续依次或穿插绕制在所述多个磁路的单个磁路上;The first winding is wound continuously or interspersedly on a single magnetic circuit of the plurality of magnetic circuits; 所述第二绕组同时绕制在所述多个磁路的偶数个磁路上,且所述偶数个磁路包括所述多个磁芯的边柱形成的磁路,所述第二绕组和所述第一绕组中任意一组上串联有补偿绕组,所述补偿绕组用于对所述第一绕组和所述第二绕组进行解耦。The second winding is simultaneously wound on the even-numbered magnetic circuits of the plurality of magnetic circuits, and the even-numbered magnetic circuits include the magnetic circuit formed by the side columns of the plurality of magnetic cores, the second winding and the Compensation windings are connected in series to any group of the first windings, and the compensation windings are used to decouple the first windings and the second windings. 3、如权利要求1所述的斯考特变压器,其特征在于,所述的构成所述两个变压器的多组绕组包括第一绕组和第二绕组;3. The Scott transformer as claimed in claim 1, wherein said multiple windings forming said two transformers comprise a first winding and a second winding; 所述第一绕组连续依次或穿插绕制在所述多个磁路的单个磁路上;The first winding is wound continuously or interspersedly on a single magnetic circuit of the plurality of magnetic circuits; 所述第二绕组同时绕制在所述多个磁路的偶数个磁路上,且所述偶数个磁路不包括所述多个磁芯的边柱形成的磁路。The second winding is simultaneously wound on even-numbered magnetic circuits of the plurality of magnetic circuits, and the even-numbered magnetic circuits do not include magnetic circuits formed by side columns of the plurality of magnetic cores. 4、如权利要求1所述的斯考特变压器,其特征在于,所述的构成所述两个变压器的多组绕组包括第一绕组和第二绕组;4. The Scott transformer according to claim 1, characterized in that, the multiple groups of windings forming the two transformers include a first winding and a second winding; 所述第一绕组连续依次或穿插绕制在所述多个磁路的单个磁路上;The first winding is wound continuously or interspersedly on a single magnetic circuit of the plurality of magnetic circuits; 所述第二绕组同时绕制在所述多个磁路的奇数个磁路上,所述第二绕组和所述第一绕组中任意一组上串联有补偿绕组,所述补偿绕组用于对所述第一绕组和所述第二绕组进行解耦。The second winding is wound on the odd magnetic circuits of the plurality of magnetic circuits at the same time, and any one of the second winding and the first winding is connected in series with a compensation winding, and the compensation winding is used for The first winding and the second winding are decoupled. 5、如权利要求2或4所述的多磁路变压器,其特征在于,所述补偿绕组绕制在单个磁路上或者同时绕制在多个磁路上。5. The multi-magnetic circuit transformer according to claim 2 or 4, characterized in that the compensation winding is wound on a single magnetic circuit or simultaneously wound on multiple magnetic circuits. 6、如权利要求2或4所述的多磁路变压器,其特征在于,当所述补偿绕组与所述第二绕组串联时,所述补偿绕组的感应磁通与所述第一绕组在所述第二绕组上产生的感应磁通相反;6. The multi-magnetic circuit transformer according to claim 2 or 4, characterized in that, when the compensation winding is connected in series with the second winding, the induced magnetic flux of the compensation winding and the first winding at the The induced magnetic flux generated on the second winding is opposite; 当所述补偿绕组与所述第一绕组串联时,所述补偿绕组的感应磁通与所述第一绕组在第二绕组产生的感应磁通相反。When the compensation winding is connected in series with the first winding, the induced magnetic flux of the compensation winding is opposite to the induced magnetic flux generated by the first winding in the second winding. 7、如权利要求1所述的斯考特变压器,其特征在于,所述磁芯为U形磁芯、CD铁芯、圆形芯柱磁芯或者带中心柱的硅钢片磁芯。7. The Scott transformer according to claim 1, wherein the magnetic core is a U-shaped magnetic core, a CD iron core, a circular core pillar magnetic core or a silicon steel sheet magnetic core with a central pillar. 8、如权利要求1所述的斯考特变压器,其特征在于,所述的构成所受两个变压器的多组绕组为线圈绕组、平面导体绕组或者印刷电路板制成的等效绕组三者其中之一或者其任意组合。8. The Scott transformer according to claim 1, characterized in that, the multiple sets of windings constituting the two transformers are coil windings, planar conductor windings or equivalent windings made of printed circuit boards. one of them or any combination thereof. 9、如权利要求1所述的斯考特变压器,其特征在于,所述的构成所受两个变压器的多组绕组的每组绕组包括一个初级绕组和至少一个次级绕组。9. The Scott transformer as claimed in claim 1, wherein each set of windings of said multiple sets of windings constituting two transformers includes a primary winding and at least one secondary winding.
CNU2007201719760U 2007-09-29 2007-09-29 Scott transformer Expired - Fee Related CN201112118Y (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102881436A (en) * 2012-09-27 2013-01-16 宜兴市兴益特种变压器有限公司 Scott transformer
CN103050262A (en) * 2012-12-25 2013-04-17 保定天威集团(江苏)五洲变压器有限公司 Three-phase to single-phase transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102881436A (en) * 2012-09-27 2013-01-16 宜兴市兴益特种变压器有限公司 Scott transformer
CN103050262A (en) * 2012-12-25 2013-04-17 保定天威集团(江苏)五洲变压器有限公司 Three-phase to single-phase transformer

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