Core loss current in a real transformer.

AI Thread Summary
The discussion focuses on understanding the core loss current in transformers, as outlined in Stephen Chapman's "Electric Machinery Fundamentals." The core loss current graph shows a constant value for a fixed time, followed by a linear variation, which reflects the behavior of eddy currents and hysteresis losses. Eddy currents increase with changes in the magnetic field, while hysteresis losses depend on the peak amplitude and are limited by the core's saturation point. Participants seek clarification on the graph's interpretation and request similar graphs for better understanding. Overall, the conversation emphasizes the importance of distinguishing between the two components of core loss in transformers.
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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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