CE Cold Rolled Crgo Lamination Core

EI Lamination Core Silicon Steel Crgo Lamination Core

EI grain oriented silicon steel lamination with durable and shock proof material for transformer or ballast lamination

In daily life, we can see that the transformer on the transformer platform is different from our home electronic equipment, but it is also used as a transformer electronic component. Why do ferrite cores and transformer platforms be used in high-frequency transformers? Silicon steel used in transformers?

Silicon steel is silicon-containing steel with a silicon content of 0.8% to 4.8%. The core of a transformer made of silicon steel is because silicon steel itself is a magnetic material with strong permeability. In the energized coil, it can generate greater magnetic induction, which can reduce the size of the transformer. The commonly used transformer core is usually made of silicon steel sheet.

We know that the actual transformer is always in the AC state, and the power loss is not only in the resistance of the coil, but also in the iron core under AC magnetization. Generally, the power loss in the iron core is called "iron loss". The iron loss is caused by two reasons, one is "hysteresis loss" and the other is "eddy current loss".

Hysteresis loss is iron loss caused by hysteresis during magnetization. The magnitude of this loss is proportional to the area surrounded by the hysteresis loop of the material. The hysteresis loop of silicon steel is narrow, and the hysteresis loss of the transformer is very small, which can greatly reduce the heat generation.

Because silicon steel has the above advantages, why not use a piece of silicon steel as the iron core and process it into a sheet shape?

This is because the thin core can reduce another kind of iron loss-"eddy current loss". When the transformer is operating, there is alternating current in the coil, and the magnetic flux it generates is of course alternating current. This changing magnetic flux generates an induced current in the core.

The induced current generated in the iron core circulates in a plane perpendicular to the direction of the magnetic flux, so it is called eddy current. Eddy current loss also causes the core to heat up. In order to reduce the eddy current loss, the cores of the transformer are laminated with silicon steel plates insulated from each other, so that the eddy current flows through a narrow cross section, thereby increasing the resistance on the eddy current path. At the same time, the silicon in the silicon steel increases the resistivity of the material and also plays a role in reducing eddy currents.

The above are some points summarized by Xiaobian to Dajia. Why do you use silicon steel sheets as the magnetic core for the transformer? Do you understand now? In the later period, if you have any requirements, please consult Jiangyin Ruyi Technology Development Co., Ltd. The company is a production enterprise engaged in CNC shearing machine equipment, designed and manufactured for steel cutting, thin metal forming, etc.