How does flux exist in transformer?

We apply an alternating voltage at the primary side. This creates a flux inside the transformer core (Φp). Some voltage is induced on the secondary side winding according to the Lenz’s Rule (E=−dΦp(t)dt). This voltage crates a current through the load (is(t)).

Which type of flux does transformer need?

Therefore, transformer action requires an alternating or time varying magnetic flux in order to transfer power from primary side to secondary side. Since induced emf in the winding is due to flux linkage. 7. Different core construction is required for core type and shell type transformer.

What is a GSU transformer?

Generator step-up transformers (GSU) are the critical link between the power station and the transmission network, often operated day and night at full load. They must be built to withstand extreme thermal loading without ageing prematurely.

Which oil is used in transformer oil?

Mineral oil
Mineral oil and Synthetic oil are the majorly used transformer oil. These are the petroleum products, like Naphthenic based transformer oil and Paraffinic based transformer oil. Naphthenic based transformer oils are known for their heat distribution, which is one of the main problems with transformer.

Can you reverse the primary and secondary on a transformer?

Usually, there is not any problem with reversing the primary and secondary of a power transformer, as long as the transformer power rating, the product of RMS volts*amps, is not exceeded.

What is mutual flux in a transformer?

In a transformer, both primary and secondary currents produce flux. The flux Ф which links both the windings is the useful flux and is called mutual flux. However, primary current would produce some flux Ф1 which would not link the secondary winding. Similarly, secondary winding would produce Ф2 that would not link the primary winding.

How is the flux generated from the secondary winding of a transformer?

And this current creates an opposing flux in the core (Φ s). The amount of this flux that is generated by the secondary winding is equal to the one generated by the primary winding (Φ s = Φ p) because the transformer drain that much of current from the primary side power supply according to he formula V 1 V 2 = N 1 N 2.

Is it possible to make leakage flux zero in transformer?

On the other hand, core reluctance is small, therefore, a large flux passes through the transformer core. So, to make leakage flux zero, we must increase the air reluctance to infinite, which is not possible.

How does a transformer work?

We apply an alternating voltage at the primary side. This creates a flux inside the transformer core ( ). Some voltage is induced on the secondary side winding according to the Lenz’s Rule ( ). This voltage crates a current through the load ( ). And this current creates an opposing flux in the core ( ).