High-voltage transformers are almost used in everything, and its principle is simple, but according to different use occasions (different uses), the winding process of high-voltage transformers will have different requirements. The high-voltage transformers are: isolation; Voltage regulation (magnetic saturation high-voltage transformer), etc., the core shapes commonly used in high-voltage transformers generally include E-type and C-type cores.
The basic type of a high-voltage transformer consists of two sets of coils wound with wires and weighed together by inductance. When an alternating current (with a known frequency) flows through one of the coils, an alternating voltage of the same frequency is induced in the other coil, and the magnitude of the induced voltage depends on the degree of coupling and cross-linking of the two coils.
Generally, the coil connected to the AC power supply is called the "primary coil" (Primarycoil); The voltage across this coil is called the "primary voltage." The induced voltage in the secondary coil may be greater or less than the primary voltage, which is determined by the "turns ratio" between the primary coil and the secondary coil. Therefore, high-voltage transformers are divided into two types: step-up and step-down high-voltage transformers.
Most high-voltage transformers have a fixed core with primary and secondary coils wound around them. Due to the high magnetic permeability of iron, most of the magnetic flux is confined to the core, so a high degree of magnetic coupling can be obtained between the two sets of coils. In some high-voltage transformers, the coil and core are tightly bonded, and the ratio of the primary and secondary voltages is almost the same as the ratio of the number of turns of the coil between the two. Therefore, the turn-to-turn ratio of a high-voltage transformer can generally be used as a reference index for step-up or step-down of high-voltage transformers. Due to the function of step-up and step-down, the high-voltage transformer has become one of the important appendages of the modern power system, and the transmission voltage is increased to make the long-distance transmission of power more economical.
In addition to the small size, there is no clear dividing line between the power high-voltage transformer and the electronic high-voltage transformer. In general, the power supply for a 60Hz power network is very large, and it may cover the capacity of half a continent. The power limitation of an electronic device is usually limited by the ability of rectification, amplification, and other components of the system, some of which are amplified power, but when compared with the power generation capacity of the power system, it still falls under the scope of small power.
Prev：Talking about the temperature limit and escalation of busway
Next：The electrified railway traction transformer introduced by the high-voltage ring main unit manufacturer
