Differences between Electromagnetic flux and magnetic flux

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Discussion Overview

The discussion centers around the differences between electromagnetic flux and magnetic flux, particularly in the context of permanent magnet machines. Participants explore the nature of flux in these machines and inquire about materials suitable for magnetic flux shielding.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions the existence of "electromagnetic flux," suggesting that flux from magnets is typically referred to as magnetic flux.
  • Another participant seeks clarification on materials that can provide magnetic flux shielding for a large stator core, indicating a need for strong shielding properties.
  • A suggestion is made that soft iron is effective for shielding in high magnetic fields, with a note on the continuity of the tangential component of H across air-iron boundaries.

Areas of Agreement / Disagreement

There appears to be some disagreement regarding the term "electromagnetic flux," with one participant expressing confusion about its usage. The discussion on materials for magnetic flux shielding is ongoing and does not reach a consensus.

Contextual Notes

The discussion does not clarify the definitions of electromagnetic flux and magnetic flux, nor does it resolve the assumptions related to their usage in different contexts.

vunteng
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May I know that are there any different between the electromagnetic flux and magnetic flux?

Are there any electromagnetic flux in a permanent magnet machine?

What kind of flux will go through the permanent magnet machine's stator cores with copper wires on it?

I am really sorry to ask so many questions in one go. However, I really need help to make myself clear on this concept.

Thank you in advance for the helping!
 
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welcome to pf!

hi vunteng! welcome to pf! :smile:

i've never heard of electromagnetic flux :confused:

the flux from an electromagnet (or any other magnet) is ordinary magnetic flux

where did you see "electromagnetic flux"?​
 
Actually I am looking for a material which is magnetic flux shielding. It is to hold the large size of stator core which around 1m long and 0.2m wide, so it must me very strong and magnetic flux shielded.

Can you please suggest me few materials in the above properties?
 
For high magnetic fields (above a few Gauss), boxes made of soft iron are good. Remember that H-parallel (tangential component of H) is continuous across an air-iron boundary. See picture of clock in

http://www.tpub.com/neets/book1/chapter1/1j.htm
 

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