What are the usual applications of rectifier transformer?

rectifier transformers are special types of transformers that are designed for rectification systems. Rectification systems are systems that convert alternating current (AC) to direct current (DC), which is often required for various industrial applications, such as aluminum electrolysis, electric arc furnaces, traction substations, and high-voltage direct current (HVDC) transmission systems. In this article, we will explain what are the functions of rectiformers, how do rectifier transformers work, and what are the applications of rectifier transformers.

• What are the functions of rectifier transformer?

• How does rectifier transformer work?

• What are the applications of rectifier transformer?

What are the functions of rectifier transformer?

The main function of a rectifier transformer is to provide a stable and adjustable output voltage for the rectifier devices, such as diodes or thyristors, that perform the actual conversion of AC to DC. The output voltage of a rectifier transformer can be regulated by using a built-in or separate voltage regulation unit, such as an on-load tap changer or a phase-shifting transformer. The output voltage of a rectifier transformer can also be adjusted by changing the number of turns or the connection of the secondary windings.

Another function of a rectifier transformer is to match the phase shift and pulse number of the rectifier system, which can reduce the harmonic distortion and improve the power quality and reliability of the system. The phase shift and pulse number of a rectifier system depend on the number and arrangement of the rectifier devices and the transformer windings. A higher pulse number can reduce the harmonic content and increase the power factor of the system. A typical rectifier system can have 6, 12, 24, 48 or 60 pulses.

How does rectifier transformer work?

A rectiformer works according to the principle of electromagnetic induction, which is the same as that of an ordinary transformer. However, a rectifier transformer has to withstand high currents and harmonics that are generated by the rectifier devices. Therefore, a rectifier transformer has to be specially designed and constructed to meet the requirements and challenges of the rectification system.

A rectifier transformer consists of a primary winding and one or more secondary windings. The primary winding is connected to an AC power source, such as a generator or a grid. The secondary windings are connected to one or more rectifier devices, such as diodes or thyristors. The rectifier devices convert the AC voltage from the secondary windings to DC voltage for the load or the transmission line.

What are the applications of rectifier transformer?

1. Aluminum electrolysis: rectifier transformers are used to provide high currents and low voltages for the electrolytic cells that produce aluminum from alumina. rectiformers can also regulate the output voltage according to the number of pots connected in series.

2. Traction substations: rectifier transformers are used to provide DC power for the electric locomotives or trains that run on railways or subways. rectifier transformers can also reduce the interference and noise caused by the traction motors and converters.

3. HVDC transmission systems: rectifier transformers are used to provide DC power for the long-distance transmission of electricity over land or sea. rectifier transformers can also increase the transmission capacity and efficiency by reducing losses and improving voltage regulation.

rectifier transformers are essential components of many industrial applications that require DC power supply.