Core loss current in a real transformer.

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SUMMARY

The discussion focuses on the core loss current in transformers, specifically referencing the concepts from "Electric Machinery Fundamentals" by Stephen Chapman. Core loss current consists of two components: eddy currents, which increase with changes in the magnetic field, and hysteresis losses, which are dependent on peak amplitude and capped at the saturation point of the core. The graph of core loss current plotted against time shows a constant value for a fixed duration before varying linearly, illustrating the relationship between these components.

PREREQUISITES
  • Understanding of core loss in transformers
  • Familiarity with eddy currents and hysteresis losses
  • Basic knowledge of magnetic fields and saturation points
  • Ability to interpret electrical graphs and data
NEXT STEPS
  • Research the effects of eddy currents on transformer efficiency
  • Study hysteresis loss calculations in electrical engineering
  • Explore transformer core materials and their saturation characteristics
  • Learn how to plot and analyze electrical current graphs over time
USEFUL FOR

Electrical engineers, students studying electrical machinery, and professionals involved in transformer design and analysis will benefit from this discussion.

aamirrafiq
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I was recently going through electric machinery fundamentels by Stephen Chapman and noticed the graph of the core loss current. I need help in understanding the nature of the current graph plotted against time, like how its value stays constant for some fixed time then varies linearly.
 
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core loss in a transformer is made of two separate components, the eddy currents, and the hysteresis losses.

eddycurrents increase with the change in magnetic field, while hysteresis losses are dependent on the peak amplitude, and capped at the total saturation point of the core.

can you provide the graph? (or a similar one online?)
 

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