Transformers : flux leakage and saturation current

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SUMMARY

The discussion clarifies that saturation current and flux leakage in transformers are distinct phenomena. Saturation current refers to the point where all magnetic domains are aligned, while flux leakage denotes the magnetic flux from the primary coil that does not reach the secondary coil. It is established that flux leakage can increase inductance because it contributes additional magnetic flux that links to the primary coil, enhancing self-inductance despite the expectation that it would decrease inductance based on the formula L = flux/i.

PREREQUISITES
  • Understanding of transformer operation principles
  • Knowledge of magnetic domains and their alignment
  • Familiarity with inductance and its calculation
  • Basic concepts of magnetic flux and its behavior in electrical circuits
NEXT STEPS
  • Research the concept of magnetic saturation in transformers
  • Learn about the effects of flux leakage on transformer efficiency
  • Study the mathematical relationship between inductance and magnetic flux
  • Explore the design considerations for minimizing flux leakage in transformers
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Electrical engineers, students studying electromagnetic theory, and professionals involved in transformer design and analysis will benefit from this discussion.

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Can anyone explain why saturation current and flux leakage are not related?

saturation current = current where all the magnetic domains are aligned right?

flux leakage = flux from the primary that doesn't reach the 2ndary

can someone also explain why, flux leakage causes a increase in inductance? (shouldn't it decrease inductance as L = flux/i )
 
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Where a current in a coil produces flux which links that coil you have inductance. The more flux that is produced by the current, the more self-inductance you have.

In an ideal transformer, a resistive load on the secondary is reflected and seen on the primary side as a resistive load on the primary power supply. If the primary current also produces some flux which links only the primary coil, that is seen as inductance on the primary side. The more flux leakage that current causes, the greater the self-inductance.
 

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