lines of flux and laminations

[Jamie Morken]

Hi,

Is it true that the lines of flux in an electric motor and/or a
transformer tend to be parallel to the laminations? Why it is this
way and not perpendicular to the laminations instead?

cheers,
Jamie

 

[Artem]

Perpedicular is problem by "eddy currents". For electricity it's looks
like short in wending.
Rotor in asynchronous motors instead have shorts for magnetics field.
(sorry for english)

 

[Jamie Morken]

Jamie Morken wrote:

Hi,

Is it true that the lines of flux in an electric motor and/or a
transformer tend to be parallel to the laminations? Why it is this
way and not perpendicular to the laminations instead?

cheers,
Jamie

Nevermind! I see now that the right hand rule (rotating flux
perpendicular to the current) explains this as the current would
want to be perpendicular to the laminations.

cheers,
Jamie

 

[Adrian Tuddenham]

Jamie Morken <jmorken@shaw.ca> wrote:

Hi,

Is it true that the lines of flux in an electric motor and/or a
transformer tend to be parallel to the laminations? Why it is this
way and not perpendicular to the laminations instead?

The laminations are intentionally designed to run parallel to the flux
so that it has an easy direct pathway and doesn't have to cross the air
gaps between them.


--
~ Adrian Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk

 

[Guy Macon]

Adrian Tuddenham wrote:

Jamie Morken <jmorken@shaw.ca> wrote:

Is it true that the lines of flux in an electric motor and/or a
transformer tend to be parallel to the laminations? Why it is this
way and not perpendicular to the laminations instead?

The laminations are intentionally designed to run parallel to the flux
so that it has an easy direct pathway and doesn't have to cross the air
gaps between them.

It helps to understand why the laminations exist rather than just
having an iron core. Study that, then figure out the lamination
direction that best accomplishes that purpose.

 

[Terry Given]

Guy Macon wrote:

Adrian Tuddenham wrote:

Jamie Morken <jmorken@shaw.ca> wrote:


Is it true that the lines of flux in an electric motor and/or a
transformer tend to be parallel to the laminations? Why it is this
way and not perpendicular to the laminations instead?

The laminations are intentionally designed to run parallel to the flux
so that it has an easy direct pathway and doesn't have to cross the air
gaps between them.


It helps to understand why the laminations exist rather than just
having an iron core. Study that, then figure out the lamination
direction that best accomplishes that purpose.

then apply the same analysis to grain orientation, to see why GOSS
(Grain Oriented Silicon Steel) is used.

Then try and figure out how to use GOSS in an E core.....

Cheers
Terry