New 18 foot blades up and flying

[jarrod9155]

Well finally installed my blades on my grid tie set up . They are royal wind and solar 18 foot blades on a axial flux 18 inch rotor with 16 coils , 32 magnets . I am seeing way better performance over the powermax blades 13.1 . The last few days I have seen any were from 1.5 kw to 4 kwatts a day . The wind only really blows for about 6 to 8 hours a day at 8 to 15 mph peak power was about 2500 watts . Would like to see more power the mppt tracking with the inverter is the tricky part for me making a power curve thats matches the blades and generator . http://www.youtube.com/watch?v=JzpSlJLIJwE  here a quick video

[defed]

awesome.  how fast does it spin?  i'm used to watching my 4' go about 600 rpm!

[fabricator]

Excellent! That is excellent performance also, what inverter are you using? I'm shopping inverters for my 17' machine right now, but I wont be grid tied.

[Dave B]

Jarrod,

  This is great to see and thank you for posting. Dave B. here, we spoke on the phone a while back and I work with Dave Moller of Royal Wind and Solar. I told Dave you had posted and were flying your 18' Gottigen Blades, I'm sure he will see this as soon as he can. We look forward to your updates on performance and your grid tie inverter programming. We have been asked many times with regards to grid tying and we hope you can help us with your experience. We are very familiar with the blades performance as direct heating and over the past year now with my 16' machine as a 24 v battery system. Again, thank you for posting and your referral to Royal Wind and Solar for your blade purchase. It will be fun to read (and see) more on your system as you make adjustments and we appreciate your feedback.  Dave B.  &  Dave Moller

[jarrod9155]

Sorry for how far the video was shot from used my i phone to do it real quick from my porch . The blades start to cut in at 110 volts , thats about 110 to 120 rpm and the inveter starts tracking from there for example at 120 im pulling 150 watts and 153 volts im pulling 300 watts and so on . I believe at 200 i start pulling   close to 1200 watts  and there im pushing the blades pretty fast from there my mppt go up pretty quick in watts to volts to keep the rpm down and let it furl .my best day so far was monday I pump out 4 kw in 8 hours  . I would like to here from dave on the max rpms he would recomend
On these blades . The inverter is a arora4.2 with a home built wind box .
E

[vawtwindy]

so far i am spending my time in reading some great enthusiasts articles both in the format of question/answers and in user diaries,

Congrats jarrod

but in everyplace the pole is getting balanced in defined pole format, like 8 magnets, 6 coils, 12 magnets, 9 coils, 16mangets 12 coils but in your post you mentioned that ^{axial flux 18 inch rotor with 16 coils , 32 magnets} does that mean you are using 20 magnets 16 coils? even if it is 20 magnets you might end up in using 15 coils?

can you please give me a bit of clarification.

[jarrod9155]

It is 12 coils 19 awg 350 turns and 16 mags per rotor total 32 

[imsmooth]

What kind of wind box did you use?  I have the aurora 3.6

[nekit]

It is 12 coils 19 awg 350 turns and 16 mags per rotor total 32 

What voltage range is the mill putting out?  I have a 17' mill wound 14awg 118 turns.  In test runs seems to make 90Vac to 400Vac from 90 rpm to 300rpm.  I'm running the 3x1.5x.75 magents, your running the smaller one correct?

[jarrod9155]

It is 12 coils 19 awg 350 turns and 16 mags per rotor total 32 

What voltage range is the mill putting out?  I have a 17' mill wound 14awg 118 turns.  In test runs seems to make 90Vac to 400Vac from 90 rpm to 300rpm.  I'm running the 3x1.5x.75 magents, your running the smaller one correct?

I use a omrone voltage sensing relay sences from 60 volts to 600 volts set at 350 volts and doesnt let off till its under 50 percent off set value once trigered . And also used a 110 relay with three contactor to releace the contacts to the inverter in case of grid falure and used the nc contacts on it to triger a brake relay that is powered buy a battery back up 24 volt relay .

[jarrod9155]

Imsmooth
   What did you use to figure your mppt table out most off mine has been guessing and whatching the turbine and voltage  and power out

[Dave B]

Jarrod,

  I spoke with Dave Moller briefly today. I have run my 16' Gottigen Blades upwards of 300 - 325 rpm when I was heating water. Dave's 20' we plan to keep below the 225 mark for his current application. We are both comfortable with 18' flying at 250 rpm and the more common concerns are tower clearance and solid hub construction not the blades themselves, we know how they are built. You might find you can dial in more power in the lower rpm compared to other blade profiles, we say that with plenty of experience of direct heating and a constant load. Keep us posted of your project, in many ways you are paving the way for others to learn of grid tying these axial machines and we are obviously very interested of your mppt and blade / alternator matching. Thanks also for the videos, we see you have posted a few more as well. Great work Jarrod, we look forward to hearing more.  Dave B & Dave Moller

[jarrod9155]

Thanks dave for the feed back I check your web site and saw your data on 18 foot blades what i did was use some off that data to adjust my mppt alittle more . Again today we saw 8 to 15 mph wind for about 8 hours and i recorded 2.1 kwh for the day with the 13.1 power max  blades it would off been .7 or so kwh . I have push the rpm s to about 300 so far  with no problems still very happy thanks again . Hope to raise the pole from 35 feet to 60 feet next week that should help a little also .

[imsmooth]

Go here and I explain how I calculate the program points for the inverter.

http://www.mindchallenger.com/wind/axial14a.html

The whole tutorial starts at http://www.mindchallenger.com/wind
and covers the axial and F&P.