grid tie control system

Andy..I have found that 3 600 sun-gs of 22-60 are perfect for my 2 500's. I only use two during most winds but in anything over 20mph I plug the 3rd back in..I have seen over 1440w out of these turbines so the 3rd is only necessary in heavy winds...

 

Leamy,start rethinking your setup....holding back voltage is only capping out put.you can stack more 22-60s and clamp this way guarenteed!..I just got my 50-100v 1200 and also bought a 600w version of the 50-100v input.. I will post results soon but I have no anemeter so it will be hard to determine exact data..

Whats cool is the book that came with it shows how to repair mosfets and capacitors with pictures..So most electronic shops could repair these things now..

 

I guess the open question is, given identical wind conditions, do the Wind GTIs, with their tracking and locking characteristics, actually capture more watts to squirt to the grid than simply storing the watts using a PWM controller and GTIing off the battery in a controllerd fashion, perhaps even in real-time? I'm not a big fan of voltage trip points and relays, so I'm coming at it from another angle, not to take away from what anyone else is trying. It's all good.

 

Zener diode setup will be best and will work quicker and cheaper than buy that switch I have. They have gone from the $70 I paid to $125 In one year.

 

I stopped using batteries because. First they are also not efficient and my batteries go from 13.5 right back to 12 volts in one day. So go figure how much I am losing each time I charge them up. If I was off grid with the system I would have to live with it but I do not. BlueJay has alot more wind all the time than most of us so what he is working on will be great for higher winds. What Leamy is working on is for lower winds and some gusty winds. I do not know if he gets hit with 20-30 mph wave type winds where it goes from 10 mph to 30+ in a couple seconds or not like I do.

 

Found a better and simpler voltage switch. The Jaycar KC5377 kit. Wish I had found this earlier.
12 volts and will take 0-50 volt input to trigger relay. Has no delay. Mine does. Also has Hysteresis control to stop chattering of relay.
http://www.jaycar.us/productView.asp?ID=KC5377&keywords=kc5377&form=KEYWORD
Set it to disconnect the 10.8-30 volt GTI at a certain voltage and leave the 22-60 volt GTI connected.

 

Blue great news. I am glad you are making progress. At this point i feel i am not losing anything or rethinking my idea as my site is way different from yours and what i have so far works for me. That is a pretty bold statement to make to me towards me. Maybe using some gentle words would be a nicer way to put it.Please keep us updated as i am very interested in your finidings. Good luck.

 

In my case, the GT's can put power into the grid starting at 11v where depending on the size of the bank and the volatge of the batteries could require more wind speeds jjust to get 1 amp or 12 watts. I have found that the conversion of watts is much quicker then with a battery for storage. In my case i have 10 batteries. It also depends on your greed for watts. Higher winds means more power, but lower winds is more common for most. I am greedy so i chose full grid tie and as long as they spin i am a happy man.

 

Gentler words???? I wasnt even spittin fire? LOL I just dont get the whole diode to cap input,throw another 22-60 gti and not worry about overvolts...As for your 10-30 disconnecting--absolutely genius!!!! You are making a high end grid tie with even more MMPT tracking..
Gentler words HAHA

Tom that switch is very cheap for the amount of lost low wind watts you can reclaim..post results Please and if you burn it up quickly.

 

I will post just as soon as I get high enough winds.

 

Thanks blue, your a wonder with words.

 

I just wrote an email to the company that made my switch. They also sell it as a .1 sec delay too but you have to tell them before you order it. So as soon as find out I will change mine over. Should just be a capacitor change.
As for the CHEAP switch. I just thought I would throw that in for anyone interested. It will work just like mine with a Heavy Duty relay for alot less money.

 

Update on my system.
Got some good gusty wind today.
http://www.youtube.com/watch?v=JSF10CZDJJg

 

Nice watts. Did you try disconnecting the 1030 and your battery clamp to see if they would run at higher RPM (volts) in conditions like this using just the 2260? Or perhaps put one GTI on each ... with the stronger one on the 2260 w/o the battery. Looks good, though at times it is hard to tell if there is a decimal point showing or not on the KAW meters. Any idea why the 1030 meter blanks out at 1:31?

 

Have no idea why the 10-30v blanked out.
I could not disconnect anything with this wind as it would over volt or over load either of the grid ties in a few seconds.The dump load got a work out last night. Some times it did not disconnect for up to about 15 seconds. I was sure at a few times both were going to fly off the roof. Biggest gusts were 55 mph.
I tried one on each. The 300 watt on the 10-30v over volted all the time. The 600 on thew 22-60 volt over volted less but it did.
Also even when I shut them down at around 35 mph they both took off spinning really FAST. Lucky did not burn anything up. All is still running OK today.
When I have some money I will be going for a few 1000 watt 22-60 volt Grid Ties in the future. Then I can run the battery tie up to 50 volts.

 

Big wind can be frightening. Sounds like the 1000w has enough muscle to contain these turbines without adding workarounds. Glad they survived.

 

with those blades...Put real blades on these pma's and its hard to lock them down..