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2 blades tested today.
By Jerry, Section Wind Posted on Wed Sep 16, 2009 at 03:02:03 AM MST
TLGs and Jerry blades.

Today I had a short window of time. This test has been in the wings for a while now.
Another board member sent me a set of TLGs Boast Buster blades and a hub for the 2 blade Cyclone version.
Acording to TLG these blades are an upgrade for GM wind generators comercialy built by Hornet, Wind Blue and the like.
The board member wanted to see how they preform on a 1 hp GE-ECM.
You won't belive this but I did the test in stock 3 phase star. This ment a 48 volt test. No time for the modifide lower voltage version today. Maybe in a day or 2?
I'll also be doing some other blade types as well. Today test was a truck mounted test.
There was absolootly no wind today dead calm. So I only used the test #s from one direction with no averaging.
Here are the TLGs #s. 4.5FT
5 mph 0 watts
10 mph 0 watts
15 mph 49.38 watts
20 mph 103.44 watts
25 mph 159.32 watts
30 mph 245.21 watts
The "Jerry Blade" #s 4 ft
5 mph 0 watts
10 mph 0 watts
12 mph 49.9 watts
15 mph 106.84 watts
20 mph 160.26 watts
25 mph 278.8 watts
30 mph 343.86 watts
The TLGs are only 1/2 ft larger but definetly have a very slow rpm profile.
I've got a Wind Blue stator on the way so there will be a bunch of TLG, Hornet, Jerry Blade and diferant alternator testing as well.
The normal disclaimer here. The wind up over the cab curupts the mph #s but it was a very calm day all day and the blades were all tested under the same conditions.
Leter till next report.
Jerry

2 blades tested today. | 4 comments (4 topical)

Re: 2 blades tested today. (3.00 / 0) (#1)
by ghurd on Tue Sep 15, 2009 at 09:39:56 PM MST

This being a 48V ECM test means the battery was 48V?
G-
Ghurd.info

Re: 2 blades tested today. (3.00 / 0) (#2)
by bsafe on Wed Sep 16, 2009 at 08:51:02 AM MST

Please correct me if I am wrong, I thought the ECM was good for 24v charging, unmodified, 12 volts with the star point seperated .

[ Parent ]

Re: 2 blades tested today. (3.00 / 0) (#3)
by Jerry on Wed Sep 16, 2009 at 09:45:18 AM MST

Hi bsafe.

Well yes and no? I've tested it that way in the past yes. I recently benched the stock ECM at 400 rpm. Measuring one coil read 4 volts. There are 6 coils per phase or 24 volts per phase. Since at any given point in time power with the star 3 phase is harvested from 2 phases wired in sires and accounting for the 1.7 loss I thought for cutin around 500 rpm would work well for 48 volts.

Besides I was in a hury on this test. Neet thing about the ECMs. 3 phases 6 coils each 18 coils total. This makes for many diferant combinations.

Depending on the desired voltage, cutin, blade type, blade size, your area wind quality and a few other conciderations. The ECM is quite versitile.

Another reson I had for this to be a 48 volt test. My RE system is 48 volts. You know I like a wind farm of small gennies.

Right now I only have 2 small gennies flying. At one time I had 7 here at home and 14 at my store.

I wanted to see how the stock star 3 phase would handle 48 volt work. I'm actuly going to try the 3 seperate bridges plus caps and sires the dc outputs.

This is the same configuration I do on the GM car alts. Diferance here is 48 volt aplication rather then 12.

I figure if I can get a couple amps from each ECM at 10 mph and fly 4 to 6 of these units I could get a few 100 watts at cutin and who knows at 20 mph?

Well back to testing.

Jerry

Airheads Page

[ Parent ]

Re: 2 blades tested today. (3.00 / 0) (#4)
by jlt on Thu Sep 17, 2009 at 08:23:07 AM MST

keep up the good work jerry you are my hero.I have gathered up 6, 1/2 hp motors to use on a water power project.and running them into a 48 volt battery bank. with outback grid tie inverter.not sure if i can get them to spin at 500 rpm though.these will be installed on a small barge with direct drive props.and just placed in the current.

2 blades tested today. | 4 comments (4 topical)

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