The rectifier transformer is a special transformer that converts alternating current (AC) into direct current (DC). It is widely used in power systems and industrial fields. Through the rectifier circuit, it converts the input AC into DC, providing a stable DC power source for industrial applications such as electrochemistry, traction, and electroplating. In modern power electronics technology, the rectifier transformer is an essential and key device.
The working principle of the rectifier transformer is based on the combination of electromagnetic induction and the rectifier circuit. Its core structure includes the iron core, windings, and cooling system. The iron core is usually made of silicon steel sheets with high magnetic permeability, which is used to transmit the magnetic field; the windings achieve the conversion of voltage through electromagnetic induction. The rectification process depends on the rectifier circuit. Common rectification methods include single-phase bridge rectification and three-phase bridge rectification. In single-phase rectification, the bridge circuit composed of four diodes converts AC into pulsating DC; while in three-phase rectification, the circuit composed of six diodes can output a smoother DC.
According to their uses, rectifier transformers can be divided into various types. For example, rectifier transformers for electrochemistry are mainly used in the electrolysis industry, rectifier transformers for traction are applied in electric locomotives and subway systems, and rectifier transformers for electroplating provide a stable DC power source for the electroplating process. Classified by structure, rectifier transformers can be divided into dry-type and oil-immersed types. Dry-type transformers are suitable for places with high environmental requirements, while oil-immersed transformers are widely used in high-power scenarios due to their good heat dissipation performance. Classified by rectification method, rectifier transformers can be divided into single-phase, three-phase, and multi-phase rectifier transformers. Among them, three-phase rectifier transformers are the most widely used in the industry due to their high efficiency and stability.
As an important device in the power system, the rectifier transformer plays an irreplaceable role. By converting AC into DC, it provides reliable power support for industrial production and power electronics technology. In the future, with the continuous advancement of technology, the rectifier transformer will play an important role in more fields, promoting the continuous development of power systems and industrial applications.
