See Ryan Biffard's and other messages:
http://groups.yahoo.com/group/lrk-to...iscount=30&l=1

Vriendelijke groeten Ron

Hi!

I could not find a formula to directly calculate the losses there. I found this pdf with a formula on page 7. Unfortunately in german, and with a pitfall for non-insiders: The losses are in Power per Weight.

And of course the formula only fits to thin laminations compared to their width.

http://neu.bucher-handel.de/media/bi... und Blech.pdf

servus,
Martin

edited

Not a half but a quarter of the original losses when halving the thickness.

Vriendelijke groeten Ron

edited

So if I made stator plates out of some really thin shim stock, say .002" (.05mm, I think...), would the thinness make up for the lack of silicon (resistance)?

Good Luck!

edited

Originally Posted by prinz

I have really 0,07mm thick plates made from a very special cobalt alloy.
insulating will be made with micro-microballoons for 0,005mm insulation thickness.

, but

Originally Posted by BeavrdamElectric

So if I made stator plates out of some really thin shim stock, say .002" (.05mm, I think...), would the thinness make up for the lack of silicon (resistance)?

Good Luck!

The silicon is not for resistance but for forming strandlike barriers/fences to guide the lines of force into streams and control any side movements into adjoining laminations causing collisons/hinderence that generate heat,so im led to believe

Originally Posted by olmod

The silicon is not for resistance but for forming strandlike barriers/fences to guide the lines of force into streams and control any side movements into adjoining laminations causing collisons/hinderence that generate heat,so im led to believe

Thanks, olmod - good information!

Good Luck!

Hmmmm most cheap motors use .5mm lams and the better ones use .21 lams so you can expect an decrease in losses around 25%..

I'll have to see how that formula plays out with several of my motors...

Thanks,
B

eddy current losses should decrease to (0.21/0.5)² of the initial losses,
or a decrease by 82%

unfortunately hysteresis losses dont...

servus,
Martin

Prinz...I can't find out how to contact you. I've got some questions about sourcing stator laminations. Send me a PM with your email address if it's not too much trouble. (sorry for hijacking the thread...I'll delete this message soon

For e-mail address see:
www.powercrco.de

Vriendelijke groeten Ron

Maybe I'm blind...but I can not find his email on the www.powercroco.de. Could the google translator have eaten it?!!