Phasor Diagram of No Load Ideal Transformer

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SUMMARY

The discussion centers on the phasor diagram of a no load ideal transformer, specifically addressing the phase relationship between V1 and E1. The consensus is that V1 is anti-phase with E1, which aligns with Lenze's law. Participants emphasize the importance of visualizing the transformer by redrawing the diagram to place both coils on the same side of the core, ensuring the correct orientation of the winding directions.

PREREQUISITES
  • Understanding of phasor diagrams in electrical engineering
  • Knowledge of transformer operation principles
  • Familiarity with Lenze's law
  • Basic skills in diagrammatic representation of electrical components
NEXT STEPS
  • Research phasor diagram conventions in electrical engineering
  • Study the implications of Lenze's law on transformer behavior
  • Explore the design and analysis of ideal transformers
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Electrical engineers, students studying transformer theory, and professionals involved in power systems analysis will benefit from this discussion.

samieee
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For a no load ideal transformer

vufGi.jpg


V1 is anti phase with E1?

wnvOP.jpg


or

in phase like this?

1EyPP.png
 
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I have seen both types of phasor diagram in different books. But the first one is the accurate answer, I think. Because of Lenze's law.
 
It'll help you visualize the problem if you redraw the top figure to place both coils on same side of the core.

Make both coils less tall and move your secondary over to other side so it's just above the primary,
paying careful attention to preserve which direction the turns are wound.
 

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