- #1
Great Warrior
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I need a equation relating no. of turns of primary+ secondary, temperature increased due to eddy currents.
Need a relation or equation....
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Discussion Overview
The discussion revolves around finding an equation that relates the number of turns in primary and secondary coils of a transformer to the temperature increase caused by eddy currents, particularly in the context of inductive heating applications.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- One participant requests an equation linking the number of turns in primary and secondary coils to temperature increases due to eddy currents.
- Another participant inquires about the existing knowledge on transformers and eddy current losses, suggesting that specific questions based on prior readings would be helpful.
- A participant expresses uncertainty regarding the effect of doubling the number of primary turns on eddy current rise.
- One suggestion points to the Steinmetz equation as a potential resource for understanding magnetic losses.
- Another participant clarifies that if the goal is to utilize eddy current losses for heating (inductive heating), the frequency of operation is more critical than the number of turns, citing examples of induction furnaces with very few turns.
Areas of Agreement / Disagreement
Participants express differing views on the relationship between the number of turns and temperature increase due to eddy currents, with some focusing on the importance of frequency in inductive heating applications. The discussion remains unresolved with multiple competing perspectives.
Contextual Notes
There are limitations regarding the assumptions made about the relationship between turns and temperature increase, as well as the dependence on specific definitions and contexts of inductive heating.
- #2
berkeman
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Great Warrior said:
Welcome to the PF.
What reading have you done so far about transformers and eddy current losses? Can you post some links to your reading, and ask specific questions about the material in that reading?
- #3
Jeff Rosenbury
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Are you asking, "If I double the number of primary turns, how much does the eddy current rise?" (And the answer is, I don't know.)
- #4
jim hardy
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Search Steinmetz equation magnetic losses
- #5
Great Warrior
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No what if I want to utilize eddy current losses to have heating effect(inductive heating) so the relation for those parameters..
- #6
Jeff Rosenbury
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For heating frequency is more important than the number of turns. I've seen induction furnaces with less than ½ a dozen turns.Great Warrior said:
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jim hardy
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