Eddie Current
Eddie Current
(OP)
Gentleman, Iam looking for full explanation for this occurrence, and what steps can be taken to correct this.
Thanks, fjconair
Thanks, fjconair
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RE: Eddie Current
I don't know what type of equipment you are referring to.
When an ac current flow it creates a field. That field is enhanced if the current happens to be wrapped around an iron core. Any conductor through which the main or stray field passes will have eddy currents induced. This may include the conductor itself, core iron, cable shields, conduit, structures etc.
From examination simple principles, we can deduce that eddy current circulating in a path is proportional to B*f*A/resistivity, and therefore losses proportional to B^2*F^2*A^2/resistivity^2.
That formula should tell you which factors you need to attack. Try to decrease B by decreasing exciting current, adding shielding between source and victim, running supply/return cables together to cancel fields etc.
Core iron is made relatively immune to eddy current by dividing it into thin separately-insulated lamiantions. If laminations break down we get more eddy current losses.
Eddy losses within large conductors themselves are decreased by using stranding.
RE: Eddie Current
Eddy current - what electricpete said.
RE: Eddie Current
RE: Eddie Current
RE: Eddie Current