[Three-phase transformer] Three-phase transformer principle Application of three-phase transformer
Three-phase transformer principle
Many people may not understand three-phase transformers very well. In fact, three-phase transformers are widely used in electronics in industrial and mining enterprises, posts and telecommunications, textiles, railways, construction sites, schools, hospitals, hotels, national defense, scientific research and other departments. AC regulated power supply for computers. It is also suitable for low-voltage power distribution with low power supply voltage and large fluctuation range. Here we will introduce its principles and functions, you can learn about it together.
A three-phase transformer is a combination of three single-phase transformers of the same capacity. It has three core columns, each of which is wound around two coils of the same phase, one is a high-voltage coil and the other is a low-voltage coil. A three-phase transformer is a generator that generates electric potentials with equal amplitude, equal frequency and 120° phase difference from each other. It is called a three-phase generator. A three-phase generator is used as a power source and is called a three-phase power supply. A circuit powered by a three-phase power supply is called a three-phase generator. It is called a three-phase circuit. U, V, and W are called three phases. The voltage between phases is the line voltage, and the voltage is 380V. The voltage between the phases and the center line is called the phase voltage, and the voltage is 220V. Working principle of three-phase transformer: basic working of transformer The principle is the principle of electromagnetic induction. When the AC voltage is applied to the primary winding and the AC current flows into the winding, it will produce excitation and generate alternating magnetic flux in the iron core. This alternating magnetic flux not only passes through the primary winding, but also passes through the secondary winding. , which induces induced electromotive force in the two windings respectively. At this time, if the secondary side is connected to the load of the external circuit, AC current will flow out, and electric energy will be output. Transformers have different usage conditions, installation locations, different voltage levels and capacity levels, and different structural forms and cooling methods, so they should be classified according to different principles. Transformers are divided into power transformers (which can also be divided into step-up transformers, step-down transformers, distribution transformers, factory transformers, etc.), special transformers (electric furnace transformers, rectifier transformers, welding transformers, etc.), instrument transformers (voltage transformers , current transformer), high-voltage transformer and voltage regulator for testing, etc.
The above content is the relevant knowledge explained, which can provide a deeper understanding of three-phase transformers.
Although transformers have different types and structures, their basic working principles are the same, and they all work based on the electromagnetic induction principle of electrodynamics producing magnetism and magnetism producing electricity.
Application of three-phase transformer
Three-phase transformer is widely used in circuits with AC 50Hz to 60Hz and voltage below 660V. Exporting important equipment, precision machine tools, mechanical and electronic equipment, medical equipment, rectifier devices, lighting, etc. The various input and output voltages of the product, the connection group, the number and position of the adjustment taps (generally ±5%), the distribution of winding capacity, and the distribution of secondary single-phase windingsEquipment, use of rectifier circuits, whether a casing is required, etc. can all be carefully designed and manufactured according to user requirements.
If the website content violates your rights, please contact us to delete it。
