Why Is Magnetic Hysteresis Loss Represented as Resistance in Equivalent Circuits

AI Thread Summary
Magnetic hysteresis loss is represented as resistance in equivalent circuits to illustrate the energy losses in magnetic materials during the magnetization process. This representation helps in understanding how energy is dissipated as heat due to the lagging response of magnetic dipoles in the core material. The discussion highlights the challenge of visualizing magnetic phenomena as electrical parameters, particularly the additional current drawn from the power source. Users are encouraged to explore existing resources, but many find that these sources lack in-depth explanations of the underlying physics. A deeper understanding of the relationship between magnetic hysteresis and electrical resistance is sought for practical applications in machines like transformers and motors.
b.shahvir
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Hi Guys, :smile:

Can someone please explain to me the logic behind the representation of 'Magnetic Hysteresis loss' as a resistance in electrical equivalent circuits?... will be extremely grateful.

Thanks & Regards,
Shahvir
 
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b.shahvir said:
Hi Guys, :smile:

Can someone please explain to me the logic behind the representation of 'Magnetic Hysteresis loss' as a resistance in electrical equivalent circuits?... will be extremely grateful.

Thanks & Regards,
Shahvir

Welcome to the PF. What can you tell us about your question? What have you learned so far about it? What web resources have you been using to investigate the question?
 
I have studied some info on this subject on the net. Even though the physics of Hysteresis Loss has been explained appropriately, I wish to dwell deeper into the phenomenon to get to the source of my doubt. In spite of the relevant theories, it becomes difficult to visualize a magnetic phenomenon into an electrical parameter as mentioned by me earlier. When we talk of energy expended by the power source to ‘pump up’ the magnetic field in the core, sounds a bit abstract!

I want to understand what phenomenon in the magnetic hysteresis causes the machine (Xmer or motor) to suck an additional losses (wattful) current from the power source.

Is it a result of the delay caused by the magnetic dipole friction in the magnetic core... which prevents the magnetic field from building up quickly? I would be grateful if someone could elaborate on this part. Thanx.

Kind Regards,
Shahvir
 
Someone please reply to this query too! :frown: (or is this query in the wrong section of the forum :confused:)

Kind Regards,
Shahvir
 
berkeman said:
I googled "magnetic hysteresis loss" and got lots of hits

Thanx for considering my request. The first thing i did was to browse the net like you did, but the discussions do not delve deep into he physics of Hysteresis loss! (they are general explanations). Still i'll give it a go.

berkeman said:
(including your post of the questionn on another forum, also without much of a reply). There seem to be some pretty good hits on the list:

OOPS! :biggrin:
 
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