What are the uses and application fields of rectifier transformers
The application of the rectifier transformer in the electrochemical industry, which is the application of rectifier transformers, electrolysis of non-ferrous metal compounds to produce aluminum, magnesium, copper and other metals; electrolysis of salt to produce chlor-alkali; electrolysis of water to produce hydrogen and oxygen. The power rectifier installation is also low in secondary voltage and large in current, so they are similar to electric furnace transformers in many aspects, that is, the structural feature points mentioned above, the rectifier transformer also has the same.
The characteristic of the rectifier transformer is that the secondary current is not sinusoidal AC. Due to the single-line conduction characteristic of the subsequent rectifier elements, each phase line no longer flows at the same time, and the load current flows instead of soft current, and the pulsating current in both directions is filtered and installed. DC, the secondary voltage and current of the rectifier transformer are not only related to the capacity connection group, such as the commonly used 3-phase bridge rectifier circuit, the rectifier circuit of double inverse quantity with balanced reactor, for the same DC output voltage, the rectification required for the current The secondary voltage and current of the transformer are not the same, 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.
Since the rectifier winding current is non-sinusoidal and contains many high-order harmonics, in order to reduce the harmonic pollution to the power grid and improve the power factor, it is necessary to increase the pulse number of the rectifier equipment, which can be handled by phase shifting. The purpose is to make a phase shift between the line voltages of the same name terminals of the secondary windings of the rectifier transformer.
