Core loss current in a real transformer.

In summary, the conversation discusses the core loss current in electric machinery and its relationship to eddy currents and hysteresis losses. The graph of the core loss current plotted against time is characterized by a constant value for a fixed time, followed by a linear variation. Eddy currents increase with changes in the magnetic field, while hysteresis losses are dependent on the peak amplitude and reach a maximum at the total saturation point of the core. The speaker asks for a graph or a similar one online to better understand the nature of the current graph.
  • #1
aamirrafiq
1
0
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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  • #2
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?)
 

Related to Core loss current in a real transformer.

What is core loss current?

Core loss current refers to the amount of current that is lost in a transformer's core due to the magnetic flux that is generated during operation.

What causes core loss current?

Core loss current is caused by hysteresis and eddy currents, which occur due to the changing magnetic field in the transformer's core.

How does core loss current affect a transformer?

Core loss current can lead to power loss and decreased efficiency in a transformer. It can also cause the transformer to heat up, which can lead to damage and decreased lifespan.

How is core loss current measured?

Core loss current is typically measured using a wattmeter, which measures the power loss in the transformer's core. It can also be calculated by measuring the voltage and current in the transformer and using the formula P = VI.

How can core loss current be reduced?

Core loss current can be reduced by choosing a high-quality core material, using proper insulation, and designing the transformer with optimal core dimensions. Regular maintenance and proper operating conditions can also help reduce core loss current.

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