Stored energy

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Offline syhprum

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Stored energy
« on: 15/07/2009 08:11:48 »
I understand that the energy stored in an inductor is I^2*l/2 if I steadily increase the current in an Iron cored inductor until the core saturates what happens ?
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lyner

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Stored energy
« Reply #1 on: 15/07/2009 09:02:42 »
When the core saturates, the effective  Inductance reduces for any increase in current so lesss energy is stored for a given current.

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Offline daveshorts

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Stored energy
« Reply #2 on: 15/07/2009 09:09:38 »
Yes, so the total amount of energy stored doesn't decrease, it just starts increasing much, much more slowly.

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lyner

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Stored energy
« Reply #3 on: 15/07/2009 23:42:31 »
Yes. The core doesn't 'absorb' any more energy - the permeability of free space is all that's left when the fields are high enough.