skewing and saturation
skewing and saturation
(OP)
Hi,
I have a 250 kW induction motor which has a high saturation level since rotor was changed from a non-skewed to a skewed one (one slot pitch)... Is there a correlation between saturation and skewing ??
Thanks for your answers,
I have a 250 kW induction motor which has a high saturation level since rotor was changed from a non-skewed to a skewed one (one slot pitch)... Is there a correlation between saturation and skewing ??
Thanks for your answers,





RE: skewing and saturation
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RE: skewing and saturation
There is a lot more that I can't easily transcribe (equations and words). The gist that I get is that the stator load current flows to match/cancel the mmf of the rotor load current. But since the stator is not skewed, it cannot possibly cancel the axially-varying component of the rotor mmf. This extra uncanceled component of mmf on top of the normal airgap exciting mmf apparently leads to saturation.
That's what I get out of the book. But it's a little above my head.
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Eng-tips forums: The best place on the web for engineering discussions.
RE: skewing and saturation
The expression given for rotor mmf that includes a "compensated" portion which doesn't vary with y (axial distance) and an "uncompensated" portion which does vary with y. The uncompensated axially-varying portion of rotor mmf is the one that can't be cancelled by stator mmf.
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Eng-tips forums: The best place on the web for engineering discussions.
RE: skewing and saturation
=====================================
Eng-tips forums: The best place on the web for engineering discussions.
RE: skewing and saturation