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KR-102963206-B1 - Iron core structure for transformers and transformers applied thereto

KR102963206B1KR 102963206 B1KR102963206 B1KR 102963206B1KR-102963206-B1

Abstract

The present invention relates to an iron core structure for a transformer and a transformer to which the same is applied. The iron core structure for a transformer according to the present invention comprises a plurality of first steel plates made of a first material and a plurality of second steel plates made of a second material different from the first material, wherein the first steel plates and the second steel plates are each distributed on the thickness of the iron core.

Inventors

  • 윤명환
  • 이기덕

Assignees

  • 한국전자기술연구원

Dates

Publication Date
20260511
Application Date
20241108

Claims (11)

  1. As an iron core structure for a transformer, It consists of multiple layers of steel plates, and A plurality of first steel plates made of a first material; and A plurality of second steel plates made of a second material different from the first material; comprising The first steel plate and the second steel plate are each distributed on the thickness of the iron core, and A transformer core structure characterized by arranging the one with a relatively higher coefficient of thermal expansion among the first steel plate and the second steel plate on the inner side in terms of thickness.
  2. In paragraph 1, The first steel plate and the second steel plate are, A transformer core structure characterized by having electrical and mechanical properties that are different from each other.
  3. In paragraph 2, The above first steel plate is, A transformer core structure characterized by being an amorphous steel plate or a nanocrystalline alloy steel plate.
  4. In paragraph 3, The above second steel plate is, A transformer core structure characterized by being a silicon steel sheet or a high-silicon steel sheet.
  5. In paragraph 1, The first steel plate and the second steel plate are, A transformer core structure characterized by having a different ratio of thickness to the thickness of the core.
  6. In paragraph 5, The first steel plate and the second steel plate are, A transformer core structure characterized by being alternately stacked according to the ratio of the thickness occupied on the thickness of the core.
  7. In paragraph 6, The first steel plate and the second steel plate are, A transformer core structure characterized by having the same thickness, wherein each number is formed in proportion to the ratio of the thickness occupied by the core thickness.
  8. In paragraph 1, At least between the first steel plate and the second steel plate, A transformer core structure characterized by having an elastic cushioning material arranged therein.
  9. In paragraph 8, The above cushioning material is, Iron core structure for a transformer characterized by being made of polyurethane, silicone, or rubber.
  10. delete
  11. A transformer having an iron core structure according to any one of paragraphs 1 through 9.

Description

Iron core structure for transformers and transformers applied thereto The present invention relates to an iron core structure for a transformer and a transformer applying the same, and more specifically, to an iron core structure for a transformer with excellent electrical and mechanical properties and a transformer applying the same. Transformers are essential devices in power systems that convert voltage to efficiently transmit power, playing a crucial role in increasing power transmission efficiency and minimizing energy loss. The iron core, one of the transformer's core components, significantly influences the transformer's efficiency and performance based on its electromagnetic properties. The iron cores of conventional transformers were mainly manufactured using a single material, such as amorphous steel or silicon steel. Amorphous steel sheets are advantageous for increasing efficiency due to their low iron loss (eddy loss), but they have the disadvantages of low magnetic flux density, weak mechanical properties, susceptibility to vibration and noise, and large volume. On the other hand, silicon steel sheets have high magnetic flux density and excellent mechanical strength, making them resistant to vibration and noise, but they have high iron losses, which reduces the efficiency of transformers. FIG. 1 is a cross-sectional view of an iron core structure for a transformer according to one embodiment of the present invention, FIGS. 2 and FIGS. 3 are explanatory diagrams of simulation results for various embodiments of the present invention. In order to clarify the features and advantages of the means for solving the problem of the present invention, the present invention will be described in more detail with reference to specific embodiments of the present invention illustrated in the attached drawings. However, detailed descriptions of known functions or configurations that may obscure the essence of the invention are omitted in the following description and the attached drawings. Additionally, it should be noted that identical components throughout the drawings are indicated by the same reference numerals whenever possible. Terms and words used in the following description and drawings should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention, based on the principle that the inventor can appropriately define the concept of terms to best describe his invention. Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the invention and do not represent all aspects of the technical spirit of the invention; therefore, it should be understood that various equivalents and modifications capable of replacing them may exist at the time of filing this application. Furthermore, the terms used in this specification are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. Additionally, terms such as “comprising” or “having” described in this specification are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Additionally, “one (a or an),” “one,” “the,” and similar related terms may be used in the context describing the present invention (particularly in the context of the following claims) in a sense including both singular and plural, unless otherwise indicated in this specification or clearly contradicted by the context. In addition to the terms described above, specific terms used in the following description are provided to aid in understanding the present invention, and the use of such specific terms may be modified in other forms without departing from the technical spirit of the present invention. Hereinafter, the iron core structure for a transformer according to the present invention and a transformer to which the same is applied will be described. FIG. 1 shows a cross-sectional view of an iron core structure for a transformer according to one embodiment of the present invention. In FIG. 1, an example is shown in which the iron core (1) for a transformer is made of four layers of steel plates in cross-section, but the iron core (1) for a transformer can be made of three or five or more layers. The iron core structure for a transformer according to the present invention is composed of multiple layers of steel plates and includes multiple first steel plates (10) and multiple second steel plates (20). Each of the first steel plates (10) is made of a first material, and each of the se