Power transformer working principle

2019-05-29 11:44:32 JUKE CHINA ODM OEM Transformer factory Read

Power transformer working principle

When we are in contact with the Power Transformer, we must first understand the working principle of ourselves. After we use it, it will be much easier. Let's look at the working principle of the overall power transformer.
After the primary winding (primary winding) of the power transformer is connected to the AC power source, an alternating current flows through the winding to generate a magnetic flux. Under the action of the magnetic flux, there is an alternating magnetic flux in the iron core, that is, the primary winding is from the power source. The electric energy is absorbed into magnetic energy, and the (ring) chain thickness and the secondary winding (secondary winding) are simultaneously distributed in the iron core, and the induced electromotive force having the same frequency is generated in the primary and secondary windings respectively due to electromagnetic induction. If the secondary winding is switched on at this time, under the action of the secondary winding induced electromotive force, a current flows through the load, and the magnetic energy in the iron core is converted into electric energy. This is how the power transformer uses the principle of electromagnetic induction to transfer the power of the power supply to the load.

Under the action of the main magnetic flux, the coils on both sides respectively generate an induced potential, and the magnitude of the potential is proportional to the number of turns, and K is the ratio of the power transformer.
Power transformer working principle.png

The ratio of the current of the power transformer is inversely proportional to the number of turns of the primary and secondary windings.
Power transformer working principle.png

 The current on one side of the power transformer has a small current, and the current on the side with a small number of turns is large. The power transformer has different turns of the primary and secondary coils and acts as a transformer. When the primary side of the power transformer is rated voltage, the secondary side voltage varies with the magnitude of the load current and the power factor.