The main application range of rectifier transformers
The application of rectifier transformers for electrochemical analysis in the industrial industry, which is an industry with many applications of rectifier transformers, electrolysis of non-ferrous metal organic compounds to produce aluminum, magnesium, copper and other metals; electrolysis of salt to produce chlor-alkali; electrolysis of water to produce Hydrogen and oxygen are produced. Power rectifiers are secondary low voltage, high current, so they are similar in many ways to furnaces when they are changed, i.e., the front structural feature points also include rectifier transformers.
Rectifier transformers are widely used in lighting, machine tool electrical appliances, mechanical enterprise electronic technology equipment, medical service equipment, rectifier devices, etc. The product performance can meet various special requirements of users.
First, the electrochemical industry is the most applied rectifier transformer industry, non-ferrous metal compounds are prepared by electrolysis of aluminum, magnesium, copper and other metals; chlor-alkali electrolysis is used to prepare salt; water electrolysis is used to generate hydrogen and oxygen.
2. The DC system power supply for traction can be used for the DC power grid of electric locomotives in mines or cities. Due to the overhead line on the valve 2 side, there are many short-circuit faults, and the change of DC load is largely converged, and motor vehicles are often started, resulting in different For this reason, the temperature rise limit and current passing density of our transformers are lower. The impedance is about 30% larger than that of the corresponding power transformer.
3, DC transmission is mainly used for electric drive power, DC motor armature and magnetic field, such as rolling mills.
4. The voltage of this type of rectifier transformer for DC system transmission is generally above 110kV, and the capacity can be tens of thousands of KVA. Special attention should be paid to the insulation superposition of AC and DC.
In addition, through the rectifier transformer, there are also DC system power supply for electroplating or electrical processing, DC working power supply for excitation, DC power supply for charging and electrostatic precipitator, etc.
The main feature of the rectifier transformer is that the secondary current is not sinusoidal AC. Because the subsequent rectifier elements have unidirectional conduction characteristics, each phase line is no longer conducted at the same time, the current has load current but soft current conduction, and the unidirectional pulsating current is converted by the filter device. For DC, the secondary voltage and current of the rectifier transformer is not only related to the capacity connection group, such as a 3-phase bridge rectifier line, the rectifier circuit has a double pair of balanced reactors, for the same DC output voltage and current, the secondary voltage of the rectifier transformer and The current is different, so the parameter calculation of the rectifier transformer is based on the rectifier circuit, and the general parameter calculation is calculated from the secondary side to the primary side.
