The Reason behind Laminating Silicon Steel Sheets in Power Transformers
Silicon steel sheets are widely used in the manufacturing of power transformers due to their low magnetic losses. These sheets are made by rolling steel into thin sheets and then laminating them to reduce eddy current losses. The process of laminating silicon steel sheets is done by stacking them one on top of the other, creating a laminated core. But what is the reason behind laminating these sheets?
The main reason behind laminating silicon steel sheets is to reduce eddy current losses. When an alternating current flows through a conductor, eddy currents are induced in the conductor. These eddy currents create heat, which causes power loss. In a transformer, this power loss is known as eddy current loss or more specifically, as the “iron loss”.
By laminating the silicon steel sheets, the eddy currents are restricted to smaller loops within each sheet, reducing the overall eddy current loss. The laminations help to insulate each sheet from one another, and this reduces the size of the eddy currents that can flow.
In addition to reducing eddy current loss, laminating the silicon steel sheets also increases the resistance to magnetic fields. This is because the laminations help to reduce the formation of magnetic domains that can be created in a continuous piece of steel. By laminating the sheets, the magnetic flux is forced to flow through the laminations, reducing the magnetic domain formation and thus reducing the losses.
The process of laminating silicon steel sheets in transformers involves stacking the sheets and then clamping them together. The clamping pressure is adjusted to ensure a tight bond between the sheets, which is essential for maintaining the integrity of the laminations. The laminated core is then assembled with the rest of the transformer components.
In conclusion, laminating silicon steel sheets in transformers is a crucial step in the manufacturing process that helps to reduce eddy current loss and improve the resistance to magnetic fields. The process of laminating involves stacking the sheets, clamping them together, and assembling the laminated core with the rest of the transformer components.
LuShan, est. 1975, is a Chinese professional manufacturer specializing in power transformers and reactors for 48 years. Leading products are single-phase transformer, three-phase transformers, DC inductors, AC reactors, filtering reactor, expoxy resin high-voltage transformer and intermediate, high-frequency products. Our transformers and reactors are widely used in 10 application areas: rapid transit, construction machinery, renewable energy, intelligent manufacturing, medical equipment, coal mine explosion prevention , excitation system, vacuum sintering, central air conditioning.
Know more about power transformer :https://www.lstransformer.com/Transformers