- #1

BlackMelon

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- TL;DR Summary
- Finding power loss due to eddy current

Reference website: https://www.electricalvolt.com/2019/08/eddy-current-loss-formula/?expand_article=1

Hi there!

Recently, I am studying this kind of power loss from the following link:

https://www.electricalvolt.com/2019/08/eddy-current-loss-formula/?expand_article=1

Just to summarize an idea,

Supposed that we got a material, which is penetrated by a magnetic flux. The material will generate the eddy current to oppose the change of the flux.

We divide this material into portions.

We treat each of the portion as a one-turn coil, having I_eddy flowing through.

Use the Faraday's Law to find the induced voltage (E) in each portion.

Use R = rho*(length)/(area) to find the resistance of each portion (that I_eddy flows through)

The power loss of each portion is dP = E^2/R

Integrate dP over all the portions to get "P: The power loss due to eddy current."

Recently, I am studying this kind of power loss from the following link:

https://www.electricalvolt.com/2019/08/eddy-current-loss-formula/?expand_article=1

Just to summarize an idea,

Supposed that we got a material, which is penetrated by a magnetic flux. The material will generate the eddy current to oppose the change of the flux.

We divide this material into portions.

We treat each of the portion as a one-turn coil, having I_eddy flowing through.

Use the Faraday's Law to find the induced voltage (E) in each portion.

Use R = rho*(length)/(area) to find the resistance of each portion (that I_eddy flows through)

The power loss of each portion is dP = E^2/R

Integrate dP over all the portions to get "P: The power loss due to eddy current."

**From this equation in the link, I am curious why the bounds of the integration is 0 to T/2. Should it be -T/2 to +T/2 instead?**

(Please look at the diagram in the aformentioned link)

Best Regards,

BlackMelon(Please look at the diagram in the aformentioned link)

Best Regards,

BlackMelon

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