Detailed explanation of typical double-winding transformer core structure

1. Overview of double winding transformer

A double-winding transformer is a common power device that uses two independent windings, one of which is used as an input winding and the other as an output winding. The two windings are connected together through a common iron core to realize the transmission and transformation of electrical energy. . Due to its simple structure, stable performance, and wide applicability, it has been widely used in power systems and electronics fields.

2, double winding transformer core material

The core materials of double-winding transformers mainly include silicon steel sheet and ferrite. Among them, silicon steel sheet is a common iron core material, which has the advantages of high magnetic permeability and low loss, so it is widely used in various types of transformers. Ferrite is a new type of iron core material. It has the characteristics of low noise and high temperature stability. It performs well in high-frequency applications, but its price is slightly higher than that of silicon steel sheets.

3. Manufacturing process of double winding transformer core

The process of making the iron core has an important influence on the performance and service life of the double winding transformer. Currently, the core manufacturing process includes operations such as cutting, winding and gluing. Among them, the shearing process is the most commonly used one. Usually, the method of shearing first and then cold rolling can be used to obtain higher density and uniformity. The winding process is suitable for the case of using ferrite material to make the core, which can achieve higher frequency response and low loss. The bonding process is mainly used in the production of small transformers. In this process, the iron core is assembled from multiple small iron sheets, which can achieve high power density and thickness control accuracy.

4, the advantages of double winding transformer core

The iron core structure of the double winding transformer has many advantages, which are mainly reflected in the following aspects:

（1）. Low loss. Double-winding transformers use materials such as silicon steel sheet or ferrite to make iron cores, which can greatly reduce hysteresis loss and eddy current loss, and improve energy conversion efficiency.

（2）. Efficient performance. The iron core structure can effectively control the magnetic induction lines and magnetic field distribution, and improve the conversion efficiency and stability of electric energy.

（3）. High temperature stability. Materials such as silicon steel sheet and ferrite have excellent high temperature resistance, and can maintain long-term stable performance in high temperature environments.

5. Application scenarios of double-winding transformer core

Dual-winding transformer core construction is suitable for a variety of applications, including:

（1）. Power system. Two-winding transformers are commonly used in power systems for buck-boost, isolation, and power distribution.

（2）. Electronic field. Double-winding transformers are also widely used in various types of electronic equipment and circuits, such as regulated power supplies, electronic converters, inductors, etc.

To sum up, the double-winding transformer core structure has many advantages and application scenarios, and its manufacturing process and materials are also constantly developing and innovating. With the development of science and technology and the continuous expansion of application fields, double-winding transformers will play a more important role in the future.