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ceramic v.s. neodymium
By Paulm, Section Homebrewed Electricity Posted on Fri Nov 12, 2004 at 07:29:32 AM MST
are ceramic just as good?

For my first induction motor conversion I'm trying to keep cost down cause I don't know how well things will work out. Ceramic magnets are so much cheeper than neos. I they are not as strong but will they still work ok? Most PM motors seem to use ceramic magnets for the field. Anyone have some experience with induction motor conversion with ceramic magnets ?

ceramic v.s. neodymium | 4 comments (4 topical)

Re: ceramic v.s. neodymium (3.00 / 0) (#1)
by troy on Fri Nov 12, 2004 at 07:49:15 AM MST

Good ceramic magnets will be lucky to produce half the output compared to neodymium magnets, and a third would be more likely. Neodymium magnets are astounding in their flux density. That doesn't mean ceramics are inappropriate for your application so long as you account for the difference in strength.

Good luck and have fun doing it!

troy

Re: ceramic v.s. neodymium (3.00 / 0) (#2)
by fuzz on Fri Nov 12, 2004 at 02:41:31 PM MST

As troy stated, less power but using ceramic magnets could give you some advantages, its cheaper and less cog effect.
In my opinion are ceramics more suitable for a smaller windmill if you want to use a converted induction motor

fuzz

Re: ceramic v.s. neodymium (3.00 / 0) (#3)
by ghurd on Fri Nov 12, 2004 at 07:53:32 PM MST

Can you give some more advantages?

I'm doing a 1/30hp neo conversion and worry about stalling. This would only need bigger blades, but I don't get much else.

G-
Ghurd.info
[ Parent ]

Re: ceramic v.s. neodymium (3.00 / 0) (#4)
by tecker on Sat Nov 13, 2004 at 04:51:07 PM MST

You can get some time energy with really large ceramics (longer duration in potiential ) which translate to more amperage

ceramic v.s. neodymium | 4 comments (4 topical)

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