The Efficiency And Losses Of Transformers Explained


We cannot neglect the importance of transformers, as we’ve become so dependent on every kind of electrical and electronic application, each of which requires a transformer to bring in safe amount of power for effective and safe performance. But, it is absolutely important that the transformers are efficient in their functioning so that any kinds of problems can be avoided. One important factor in transformer efficiency is “transfer loss”. Here’s all you need to know about transformer efficiency and transformer losses, so that you can get hold of the right kind of transformer.

What is transformer loss?

Transformer loss is the difference between output power and input power. There is no mechanical loss like friction or windage loss in an electrical transformer because it is a fixed device, but there are copper and iron losses present in a transformer. Also, there is the eddy current loss.

Copper loss/iron loss – In a transformer’s core, the process of magnetization reversal leads to hysteresis loss, which is dependent on the grade of iron, volume of iron, flux density value, and magnetic reversals frequency. The hysteresis loss or current loss of a transformer is dependent on the material’s magnetic property that is used for the construction of the core, which is why the losses are known as copper loss or iron loss. The windings in the transformer offer ohmic resistance, which also leads to copper loss. The copper loss for primary windings is I12R1, and for secondary windings is I22R2, where I1 and I2 are the currents flowing in the windings, and R1 and R2 are the resistances. Such copper loss is highly dependent on the load.

Eddy current loss – The primary winding in a transformer is supplied with AC current, as a result of which magnetizing flux is set up, which in turn creates induced EMF in the secondary coil after coming in touch. However, some additional conducting parts like the iron body or steel core of a transformer also gets linked to the flux, which results in the circulation of small currents due to the induced EMF. This current is known as eddy current, which is responsible for energy dissipation in heat form.

What is transformer efficiency?

Transformer efficiency is important for economical functioning, which is determined by the ratio of output power to input power. A transformer can possess maximum efficiency when the iron and copper losses in it are equal.  You can get the most efficient transformers at Miracle Electronics, which is a reliable and recognized transformer manufacturer in India that offers transformers with maximum efficiency and minimal losses. This is possible as we have a team of skilled professionals using the latest technologies to be able to meet the highest quality standards and fulfill the demands of every kind of customer. You can buy all kinds of transformers here, such as power transformers, toroidal transformers, medical isolation transformers, three phase transformers, EI transformers, UI transformers, SMPS transformers, and many more.

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