a little gem

[97fishmt]

This little gem has been kicking it out at my cabin when my big unit is down while
I'm away.  I actually arranged to sell this one for 3 cords of wood but I've only received
one cord so far.  So it's back up on my little pole and keeping my 12 volt bank topped off.

This is a real nice motor for 12 volt charging. 

[philb]

That's a nice unit. What do you look for when selecting a servo?

[97fishmt]

Basically the newer ones with the neo magnets for compact size.

200 volt 1500rpm.

The 400 volt 1500 rpm are awesome for 24 volt charging.

[Wolvenar]

Neat, I followed posts on these a couple years back.. what names. or what should I look for if I were to search out some of them?

[97fishmt]

All the manufactures are a little different in building motors because it takes thier controller
to make it work as a motor.  All the permanent magnet AC servo motors will work as an
alternator.  Some just work better in the rpm range that we are looking for-for a wind generator.

I like Yaskawa, Ormek is the one in the picture. I have a Siemens that has been working for
over 10 years.

I'd be glad to help with any questions anyone has about using a servo motor for a wind turbine.

Mike

[97fishmt]

This is my big one up now.

It's labeled as IIS, a custom servo motor company from New York.
300 volt 1500 rpm 80 amps.  I expect to get 3000 watts out of this
one at 30 volts. (100 amps)   25 volts @ 120 rpm  Just getting the
prop together now.

[97fishmt]

I know these are old pictures from other posts,
I'm just establishing how I've made the wind
work for me and hanging my hat in a corner of
the room at this site. 

Mike

[MadScientist267]

That's pretty sweet, man.

One thing I've always wondered about the servos, as I haven't had my hands on any myself to even tinker with. From what I understand they are similar in behavior to steppers, right? So is there the whole noise issue (like the whine) that comes from steppers?

I realize that fundamentally, they are different. But from what I read, there are similarities that seem to me to be enough like stepper to beg the question.

Steve

[97fishmt]

Not at all Steve,

The magnets are skewed so there is no cogging.  They spin free of any magnetic drag.
 They are wound with 3  phase windings with neo magnets.  It's as good as it gets.
 They are what Zubbly was trying to duplicate. Just nobody could afford them.
 Now you can find them being swapped out of machinery or new old stock.

[Isaiah]

 There is a picture of one here http://www.thebackshed.com/forum/forum_posts.asp?TID=4488&PN=1 That is a servo and I just made the blade extenders ( it made a 6 footer out of a 4 footer) and all you can hear is a little air noise off the blades  when she reaches cut in. bub And I have several that we will be putting up as time allows.
 With Mike's help we like them but do the math so you dont get one that wont make your desired cut in speed  Smileys/default/smiley.gif

[Isaiah]

Mike
What do you use on your tower mast pipe to hold the yaw tube in place ?
To keep it from sliding down the pipe?
 I have to make up some new  motor mounts and am collecting Idea's

[97fishmt]

Hi Isaiah,
     If I understand you right, my pipe over pipe bearing at the tower top is welded
to the motor platform.   The tower stub has a teflon doughnut on top of the stub
and the motor mount goes over it , riding on the teflon bushing.   This is the motor mount.

[Wolvenar]

@97fishmt

Wow, that looks awefully familiar

Nice looking job btw

[bvan1941]

97 Fishmt,
I have read your posts about Servo Motors as a WT for some time. Have been looking on Ebay for the last 3 weeks for a suitable unit for a project. Prices have gone up!
I have taken to looking for units that are listed as 2kw and up with 15 amps and voltages as high as i can find at no higher than 2000 RPM as a project. If I have read your posts correctly (on another forum) I believe these parameters would provide an effective WT at 10-20 mph windspeeds, correct?
By the way thanks so much for your out-of- the-box thinking, can't wait to get started. What are you using for power control? what is the pole size for your big unit?
Bill

[artv]

Hi 97,
If your anywhere near Ottawa, I'd give you 5 cord for that...
What are these motors used for ?
Maybe I can find some....A friend of mine owns a junk-yard..
I like your projects ,well within my ability's ...
Do you have any pics of the guts of the thing....
These electric motors pretty much look all the same to me ,...just wondering what distiguishes,good from bad.......thanks for posting .....artv