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GE ECM MOTOR


By Nando, Section Wind
Posted on Thu Feb 15th, 2007 at 08:36:04 PM MST
How good a GE ECM motor for a small wind mill

Gentlemen:

I would like to read from the members that have used a GE ECM MOTOR as a generator for a wind mill.
What HP size was used ?.

Who has done a wind mill without converting the windings and who has done it modifying the windings.

Detail the modifications please

The power results good or bad.

I have been asked to see if its worthy to use them for small wind mills to assist Center American Communities that do not have electricity nor water resources for a small hydro and the solar panels systems too expensive for them, they do have good wind regimes.

Thanks in Advance.

Nando

GE ECM MOTOR | 7 comments (7 topical, 0 editorial)

Re: GE ECM MOTOR (3.00 / 0) (#1)
by ghurd on Thu Feb 15th, 2007 at 01:53:21 PM MST
(User Info)

Hi Nando,

This you probably saw, but it is the only real numbers I recall.
The 1/2 and 3/4 HP are more common than the 1 HP, at least here.
GE now makes a 'Brain Repair Kit',
so most of mine came from the complete furnace being replaced (100% working motor),
or have a bad bearing, loose magnet, etc. (non-working motor with a problem not related to the controller)

http://www.fieldlines.com/story/2005/4/16/42254/0713

G-



Re: GE ECM MOTOR (3.00 / 0) (#2)
by asheets on Thu Feb 15th, 2007 at 02:05:30 PM MST
(User Info)

Just so I know what we're talking about, one of these, right? http://www.boreal-geothermal.com/ecm-direct-drive-electronically-commutated-motor.htm
_____________________________

Alan Sheets



Re: GE ECM MOTOR (3.00 / 0) (#3)
by Nando (nando37-at-tx-dot-rr-dot-com Correct theanti-spam) on Thu Feb 15th, 2007 at 03:23:31 PM MST
(User Info)

Yes that is the right one.

Does any one may have another types or brands ?.

I am interested !!

Nando

[ Parent ]



Re: GE ECM MOTOR (3.00 / 0) (#4)
by ghurd on Thu Feb 15th, 2007 at 07:34:49 PM MST
(User Info)

Jerry had an Emerson, maybe called 'EPM'.  I do not find it listed.
It may have been replaced with "UltraTech Variable Speed Motor".
http://www.emersonclimate.com/NEWS/News/CC_001758.htm

LG used some kind in some washing machines.  It may be closer to an F&P.
There were several styles, but I could not get a good look at any.

GE is also making some ECM refrigerator motors,
but I believe just for the evaporator fans.
Some are larger than others.
eBay sometimes has one listed that is only 2" square.
while the GE ECM 84 Series 208-240V has a shaft output power of 90W.

G-

[ Parent ]



Re: GE ECM MOTOR (3.00 / 0) (#5)
by Jerry on Thu Feb 15th, 2007 at 08:36:12 PM MST
(User Info) http://www.dplusv.com/Photo-03.html

Hi Nando.

Here are the wind test #s I got from a 1 hp. GE ECM.

  1. mph 0 watts, 10 mph 30 watts, 15 mph 97 watts, 20 mph 162 watts, 25 mph 280 watts,
  2. mph 380 watts.
This thing works as good if not better then the SW-403.

The motor has 3 wires coming out. Its 3 phase. Works best to find the star point and wire "Jerry Phased". I used 4ft Jerry blades.

Power out is less with the lower hp models.

                        JK TAS Jerry

Airheads Page


[ Parent ]



Re: GE ECM MOTOR (3.00 / 0) (#6)
by Nando (nando37-at-tx-dot-rr-dot-com Correct theanti-spam) on Fri Feb 16th, 2007 at 07:03:47 AM MST
(User Info)

Jerry:

Thanks for the message, but I do not know what is the meaning of "Jerry Phased", I can not correlate the wiring to standard electric motors terminology.
Neither I can correlate to Jerry Blades.

I am familiar with all GE ECM Brushless motors and I have samples of all of them, even others not yet available in the market because they are new.

What I am interested is the changes or modifications done and the reason for such changes, the wind mills and the operational RPM.

A 1/2 HP in hydro use can supply around 240 watts, the 3/4 HP, 340 to 360 watts and the 1 HP 440 to 480 watts.
This power is in constant defined RPM and loaded for maximum equivalent MPPT power transfer with minimum internal losses.

The Units for maximum power in wind mill service should be able to have such peak powers available in hydro if the Wind mill operates in the 1200 RPM or so.

We avoid internal circulating currents by not re-wiring the coils and allowing the wind mill to produce its natural high voltage and either use transformers or doing a rectification and convert the voltage down as needed, which in wind mill usage it may not be possible if the frequency is too low, (starting conditions).

The motors have 6 poles and may be usable with transformers around 300 RPM or a bit less. (30 Hz operation).

It seems that very few have used them for wind power generation and I was trying to pick their ideas and efforts to save some time and decision making for small wind mills to be built in Center and South America and in Africa for people that do not have any other sources for electric power available to them, being Solar Panels too a high price for the system.

Thanks to all that have supplied information and still waiting for those that have used them and have not yet replied to my message.

Nando

[ Parent ]



Re: GE ECM MOTOR (3.00 / 0) (#7)
by Bayesoft on Wed Feb 21st, 2007 at 02:38:25 AM MST
(User Info)

OK, I found the thread.

Does anyone have a pictoral on how to convert/wire these as a windmill generator?

Please help the stupid people. LOL



GE ECM MOTOR | 7 comments (7 topical, 0 editorial)
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