Flying as of 6/30/2010

Discussion in 'Post Your Photos' started by TomT, Jul 6, 2010.

  1. TomT

    TomT WindyNation Engineer

    There should not be any issue with that one.
    I have added a cap to the board to the gate of the mosfet to give about 1 sec delay between switch states to cure the problem.
    When I first made the boards I was using two transistors .
    I had it working and never tried it after I added the mosfet.
    Turned out after I added the mosfet it no longer worked.
    Now it does. :)

    The first car one I used was a starter solenoid and it was only 6 ohm and burned up quick.
    Melted internally.
    The golf cart relays are about 17 ohms and draw .7 amps.
    Which should still be OK.
    I will try it out the next time I order boards.
     
    Last edited: Mar 11, 2020
  2. leamywind1

    leamywind1 WindyNation Engineer

    Ok Great!! Thanks for the response. To pick your brain even more. LOL
    What do you think about using a Dc to DC boost converter 12-80v 10 amp input (800w) and adjustable 12-80v 10 amp output for the 22-60v GTI's? I ordered one to experiment with. Also do you think it could be used for a GTI? I beleive for a GTI it will acts as an adjustable MPPT. It's settings are on the load side only for volts and amps. Meaning setting it for like 30v out to the load gives you 30v at 10 amps. On the input it starts at 12v and goes to 30v at 10 amps. Its starting input range would always be 12v but its output range can vary up to 80v. I'm not sue how it would all work yet but maybe using a the dc to dc converter to a 22-60 GTI so i can start production a lot earlier ultimutley trying make a 22-60 gti now 12-60 GTI or like 18-60 even if i have to use two converters. They were only 20 bucks ea. This also is in the works to work an Enphase inverter which i have hooked up (1-M-190) to one of your boards to disconnect it at 40 vdc. So far its working. So I have a few brain storm experiments going on right now. LOL.
    Any thoughts?
     
  3. TomT

    TomT WindyNation Engineer

    I was looking at a few of those.
    Just not wanting to spend any more money.
    If it has a pos and neg in and a pos and neg out it should work.
    What is the link for the Dc to Dc boost board?
     
    Last edited: Mar 11, 2020
  4. leamywind1

    leamywind1 WindyNation Engineer

  5. TomT

    TomT WindyNation Engineer

    As you all know we have been receiving some good wind today.
    I had to tie the Solar GTI's to the wind to cut down on the amount of dumps.
    Every 20 secs sometimes.
    I decided to let the little Effsun run wild on the 22-60 volt SunG GTI.
    So I thought.
    Just came back into the room and the relay in it was chattering ?????
    Did the only thing I could.
    Shut down the turbine.
    Unplugged the GTI then waited a few and plugged it back in.
    Green light came back on.
    Turned turbine back on.
    Viola it started working again.
    Some how it locked up and started chattering I have no idea why.
    On a more positive note the mechanical relays are working just fine and doing their job. :D
     
    Last edited: Mar 11, 2020
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  6. TomT

    TomT WindyNation Engineer

    I was wrong. There was a break in the wind when I noticed the lockup and chattering.
    It was not locked up.
    The fan was making the noise.
    It has not run in two years.
    I will have to remove the fan and oil it under the sticker.
    That should fix it like the other one I had to do that to.
     
  7. TomT

    TomT WindyNation Engineer

    Those .73 ohm resistors were too low. For the dump system.
    The turbines were making some noise. Also the relays were going too much and the GTI's quit making power when they switched.
    So I changed it up to 1.46 ohms. It is now close to the 1.8 ohms they are now calling for. That is down from 3 ohms I see.
    Now the relays stay engaged longer and the GTI's still make some power too while in dump mode.
    This is for the 10.8-30 volt 500 watt GTI.
    And on the 22-60 volt 500 watt GTI. 2.9 Ohms seems to work just fine. With the same results.
    :)
    Also on other NEWS.
    The cap at the gate of the mosfet did not work as planned. Had to add a resistor and a diode to make it all work. Testing will be on going as soon as the parts arrive.
    Finally have weekends off to work on this stuff again.
    :)
     
  8. TomT

    TomT WindyNation Engineer

    I have not been home during the day much.
    But the other day I noticed that the Solar GTI was running at reduced power.:eek:
    The old ones when they got hot stopped producing power till they cooled down. The one I have on my panels is less than a year old.
    So now to try and keep it cooler so it does not run at reduced power all afternoon.:(
    This is my first attempt. If not I will add fans on the out side.
    I would buy another but this solution is alot cheaper.
    The fans use .08 amps and are ball bearing ones.
    The old fan was a sleeve bearing and used .2 amps.

    FansGTI.JPG HeatSinksGTI.JPG
     
  9. TomT

    TomT WindyNation Engineer

    We had some good sun a couple days ago and they still dropped out. :(
    So I had to install fans on the out side.
    I will make something more permanent later. So far they have not dropped out yet.
    Also this is a better reading of what I am getting now.:)
    ExtFans.JPG New Readings.JPG
     
  10. TomT

    TomT WindyNation Engineer

    Also for the time being. I have hooked both turbines so they switch to the 500 watt 22-60 volt GTI.
    So far so good. I am seeing better output and the dump handles the overage real well.
    Does not go to dump as often this way.
    I can not wait to see the numbers on the 9th of next month.;)
     
  11. TomT

    TomT WindyNation Engineer

    Also a word of WARNING. DO NOT put anything higher in wattage than what was there to begin with. I started to smell plastic melting and disconnected the relay that I attached to the wires to drive the 3 external fans. Must be it can not handle anymore than .2 amps.
    Today I noticed that the internal fan is now on all the time.:oops:
    Will have to fix it later.
     
  12. TomT

    TomT WindyNation Engineer

    The new boards are working fine including the delay.:D

    SwitchBoard.JPG
     
    Last edited: Mar 11, 2020
  13. TomT

    TomT WindyNation Engineer

    I could not build a temperature controlled switch.
    For less than this to control the extra fans on my solar GTI's.
    $7.00 shipped to my door for free.:)
    ThermSwitch.png
     
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  14. TomT

    TomT WindyNation Engineer

    The Thermal Switch arrived and is in service today!!:) Works great.
    It is 1.5 X 1.5 inches.
    Instructions are Chinese.
    Diagram is good enough to figure it out.
    Takes up to 14 gauge wire.
    NO/NC Relay
    Temp drop to off 1-2-5-10 C
    Temp to turn on 20-90 C in 5 C steps.
     
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  15. TomT

    TomT WindyNation Engineer

    Since they have Prairie Wind pretty well set up and I needed to change my pma mounting.
    I cut a piece out of the bottom of the pipe to shrink it down but it was still making alot of rattling noise in higher wind.

    VertFurl1.JPG

    I went and made the new mount to replace the old one.
    The non turned down end. Just fit inside my 2 inch sch 80 pipe.
    So I welded up a 2 inch sch 40 short piece near the turned section and used a coupler to attach it to the sch 80 pipe.
    Used 1/8th inch thick teflon for the bearing like the last two I made.
    Here it is with new AVENGER DC-12 I am testing.
    So far using 5 wind grabber blades it put 515 watts into my 12 volt battery at 28 MPH.
    I now have three blades on it and will be doing more testing on my battery and a 22-60 volt 1000 watt GTI as soon as both are here at the same time.
    May be awhile the leaves are starting to come out. I also went from 8 inch to 10 inch width on the plate.

    NewPMAMount.JPG

    I used the wider plate just in case I want to put a larger PMA up in the future. ;)
     
    Last edited: Mar 11, 2020
  16. TomT

    TomT WindyNation Engineer

    (UPDATE) 3 blades will not cut it here. The DC-12A stalls out at 25-32 MPH.
    I went back to 5 blades for more testing.
    Right now I have it hooked to the 10.8-30 volt 500 Watt GTI. Hooked in parallel with the 1000 Watt 22-60 volt GTI.
    In gusty wind it over volts the 10.8-30 volt without a problem. But in calmer winds it will not make any power on the 22-60 volt GTI till 10 mph.
    So I will put both on the 10.8-30 volt GTI.
    Then the Effsun 300 will go over to the 22-60 volt 500 Watt GTI at 15 volts like it does now.
    And the DC-12A will cross over at about 18 volts to the 1000 Watt 22-60 volt GTI.
    I will see how that does.
    UPDATE 12/15/2014
    I now have both switches set for 22 volts.
    All was running fine till the Grid Ties did a relearn.
    After awhile at 15 volts they just started not making any power.
    Just letting both turbines go to the 22-60 volt ones.
     
    Last edited: Mar 11, 2020
  17. TomT

    TomT WindyNation Engineer

    I just got the boards I made for the MDPUB 555 controller circuit.
    Will have the relay tomorrow to hook up two of the solar panels to keep my batteries charged.
    Then it will switch them back to GTI's.
    The board is 1-1/4 IN by 2-3/8 IN.

    DSCN0100.JPG
     
    Last edited: Mar 11, 2020
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  18. leamywind1

    leamywind1 WindyNation Engineer

    Very nice. Is this a multi voltage controller where it will switch in at a certain voltage and switch off at another voltage each having its own voltage switching perimiters?
    thanks
    Larry
     
  19. TomT

    TomT WindyNation Engineer

    From what I read on it it goes from 11.9 to 14.9 volts.
    You can be anywhere in that range.
    Can also be used for a 24 volt system.
    It has a 8 volt regulator for the IC chips.

    555ChargeController.JPG
     
  20. TomT

    TomT WindyNation Engineer

    After a little work I have got the board smaller.
    Right now OSH Park will do the boards for $13.00 for 3. Here is a picture and the BRD file that you have to upload to get them made. Unzip the file then upload it to OSH Park. This board will work without the switches being installed.
    Set voltage set points by using a multimeter and the GND ,CHRG and DUMP pads.
    555ChargeController.png
    555ChargeControllerSchematic.png
    v3 BRD file is a single sided board if you want to make your own.
    Download eagle free.
    Load the file and print it.
    It should be a full size board.
    If you print it to a transparency you can use a photo resist board to make the circuit board.
    Make sure to set print properties to black only and heavy if you can first.
    Just make sure no light gets thru.
     

    Attached Files:

    Last edited: Mar 11, 2020

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