阅读说明：本技术 一种有漏磁回路的变压器设计方案 (Transformer design scheme with magnetic leakage loop ) 是由 夏光炬 于 2020-06-02 设计创作，主要内容包括：本发明公开了一种有漏磁回路的变压器设计方案。其特征在于：变压器最外面的线圈表面,放置和导线宽度相近、包扎绝缘的硅钢片,并和线圈表面线匝绑扎在一起。端绝缘支撑和压紧线圈。线圈表面的硅钢片和变压器铁心在线圈两侧,漏磁进入铁心和线圈表面的硅钢片中,形成的漏磁通从线圈上部进入铁心,再从铁心下部线圈下部进入线圈表面的硅钢片中,形成闭合的漏磁回路。漏磁回路形成以后,漏磁通在回路中流通。线圈及周围的漏磁大幅度减少。由漏磁产生的环流涡流损耗也大幅度降低,降低了线圈的附加损耗值。变压器短路时,漏磁在漏磁回路中流通,线圈周围的漏磁数量大幅度减少,因此,短路电动力大幅度降低,变压器在短路时也能安全运行。(The invention discloses a design scheme of a transformer with a magnetic leakage loop. The method is characterized in that: the outermost coil surface of the transformer is provided with silicon steel sheets which have the width similar to that of the lead and are bound and insulated, and the silicon steel sheets are bound with the wire turns on the coil surface. End insulation supports and compresses the coil. And the leakage flux enters the iron core and the silicon steel sheets on the surface of the coil from the upper part of the coil and then enters the silicon steel sheets on the surface of the coil from the lower part of the coil on the lower part of the iron core to form a closed leakage flux loop. After the leakage magnetic circuit is formed, the leakage magnetic flux flows through the circuit. The leakage flux of the coil and the surroundings is greatly reduced. The circulation eddy current loss generated by the leakage flux is also greatly reduced, and the additional loss value of the coil is reduced. When the transformer is short-circuited, leakage flux flows in the leakage flux circuit, and the amount of leakage flux around the coil is greatly reduced, so that short-circuit electromotive force is greatly reduced, and the transformer can safely operate even when short-circuited.)

1. The utility model provides a transformer design of having magnetic leakage return circuit which characterized in that: the transformer comprises a transformer body, a coil, a core, a coil, a magnetizer, a coil, a closed magnetic leakage loop and a power supply, wherein the outermost coil surface of the transformer is provided with a silicon steel sheet which has the width similar to that of a lead wire and is bound and insulated, the silicon steel sheet is bound and bound with a turn of the coil surface, the end insulation of the coil is used for supporting and pressing the coil, the coil is arranged between the core and the silicon steel sheet on the coil surface, the magnetizer generated by the current of the coil enters the silicon steel sheet on the core and the coil surface, the magnetizer forms magnetic leakage flux in the silicon steel sheet, and the magnetic leakage flux enters the core from.

2. According to claim 1, the coil surface has the same type of silicon steel sheet as the iron core silicon steel sheet, and the thickness is calculated by parameters such as transformer capacity, impedance voltage and the like.

Technical Field

The invention relates to the field of transformers. In particular to a design scheme of a transformer with a leakage loop.

Background

The transformer is an electrical product which converts electric energy into magnetic energy and then converts the magnetic energy into the electric energy.

The high-voltage coil of the transformer generates current, magnetic flux is generated in the iron core, and when the magnetic flux passes through the low-voltage coil, the required voltage is induced and transmitted out for people to use. However, the coil part outside the iron core still has leakage flux, and because there is no leakage flux loop and the distribution of leakage flux is irregular, eddy current loss and circulation loss are generated in the coil, thus wasting energy. When the transformer is in short circuit, the leakage flux can generate huge electrodynamic force to the coil, and damage parts such as the transformer coil, so that the transformer cannot run safely. The existing transformer products are not designed with leakage loops, so the problems cannot be solved from the basic principle.

Disclosure of Invention

The invention mainly solves the technical problem of providing a transformer design scheme with a magnetic leakage loop, and can solve the problem.

In order to solve the technical problems, the invention adopts a technical scheme that: the outermost coil surface of the transformer is provided with silicon steel sheets which have the width similar to that of the lead and are bound and insulated, and the silicon steel sheets are bound with the wire turns on the coil surface. The end insulation of the coil is used to support and compress the coil. The coil is arranged between the iron core and the silicon steel sheets on the surface of the coil, the magnetizer generated by the current of the coil enters the iron core and the silicon steel sheets on the surface of the coil, the magnetizer forms leakage magnetic flux in the silicon steel sheets, the leakage magnetic flux enters the iron core from the upper part of the coil and then enters the silicon steel sheets on the surface of the coil from the lower part of the coil on the lower part of the iron core, and a closed leakage magnetic loop is formed.

When the transformer operates, the leakage flux of the coil part except the iron core can form a closed loop through the leakage flux loop. The leakage flux in the coil part except the iron core is greatly reduced, so the eddy current loss and the circulation loss in the transformer coil are greatly reduced, and the energy is saved. When the transformer is short-circuited, leakage flux around the coil flows through the leakage flux circuit, and the remaining leakage flux is greatly reduced, so that electrodynamic force generated by the leakage flux on current is greatly reduced, and the transformer can be safely operated even when the transformer is short-circuited.

The invention has the beneficial effects that: because most leakage flux circulates in the leakage flux loop, the eddy current and the circulation loss generated by the operation of the transformer are reduced, the additional loss value of the coil is reduced, the energy is saved, the electrodynamic force generated by the leakage flux when the transformer is in short circuit is reduced, and the transformer can also be safely operated when in short circuit.

Drawings

Fig. 1 is a schematic diagram of a transformer design with a leakage loop according to the present invention.

The parts in the drawings are numbered as follows: 1. an iron core; 2. a main magnetic flux phi; 3. insulating a coil end; 4. a leakage partial core; 5. a high-voltage coil; 6. low-voltage coil 7, leakage magnetic circuit Φ 0.

Detailed Description

After the transformer is put into operation, leakage flux enters the silicon steel sheets on the surface of the coil, passes through the upper part of the coil, enters the iron core, and enters the silicon steel sheets on the surface of the coil from the lower part of the coil on the lower part of the iron core, so that a closed leakage flux loop is formed.

Because of the leakage loop, the leakage flux around the coil is greatly reduced, so that the eddy current loss and the circulating current loss generated by the leakage flux around the coil are greatly reduced, the additional loss value of the coil is reduced, and the energy is saved. When the transformer is short-circuited, since leakage flux basically enters the leakage flux circuit, leakage flux around the coil is also greatly reduced, and therefore, electromotive force generated by short-circuiting is also greatly reduced, and the transformer can be safely operated even when short-circuited.

The above description is only an embodiment of the present invention, and all changes in equivalent structures or equivalent processes made by using the contents of the present specification and drawings or directly and indirectly applied to other related fields are included in the scope of the present invention.