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DIY 1KW grid tie?

Discussion in 'Electronic Basics' started by BobG, Jun 25, 2006.

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  1. BobG

    BobG Guest

    Assuming I had a 1KW isolation transformer, and a hypothetical inverter
    that was programmable and synchronizable, could one drive about a KW
    into one leg of the 120? Do the grid tie inverters adjust amplitude on
    every half cycle? Are all grid tie inverters sine wave output? Or can
    they adjust the width of the 140V pulse to make the power per half
    cycle greater than what was on the grid that half cycle?
     
  2. BobG

    BobG Guest

    OK, here's a similar question.... if I look in a 500W modified square
    wave inverter, do I see a hi freq 12V chopper, a hi freq 500W
    transformer, and two 200V half bridges? Is there any sort of amplitude
    or pulse width regulation at all, or is it just a big dumb NE555?
     
  3. Phil Allison

    Phil Allison Guest




    ** I see a quite remarkable similarity between this question and the
    previous one you posed.

    The same old Google Groper stupidity.





    ......... Phil
     
  4. BobG

    BobG Guest

    =========================
    What a memory! I suppose you know exactly what the internal topology
    of msw inverters is, but you want to make me look stupid and you smart,
    so if I fly off the handle and tell you to get stuffed, you'll come
    back with some apoplectic stream of cursing like a sailor with
    Tourettes.... so Mr Smarty Phil, do msw inverters have regulation in
    them, or do you just want to keep all your info to yourself?
     
  5. Rich Grise

    Rich Grise Guest

    If you want to make your meter run backwards, you will have to clear
    it with the power company. They have all the answers as to synchronization,
    load sharing, phasing, and all that sort of stuff.

    Good Luck!
    Rich
     
  6. BobG

    BobG Guest

    Hi Rich. I'd be happy with it running a little slower. I have this
    small system I've set up in case we get another big wind and a power
    outage again here in Cen Fla. My curiousity about the technical aspects
    is sort of academic... seems like if I can pull 10 amps out of one leg
    of the 240, I could push 10 amps back in, and who would know? Isn't it
    better to ask for forgiveness than ask for permission?
     
  7. Phil Allison

    Phil Allison Guest

    "BobGoogle " <>




    ** Go ahead - make my day .......

    Google Fuckwit !





    ....... Phil
     
  8. BobG

    BobG Guest

    ===================================
    I saw that movie... Dirty Harry, right? Hey Phil... know anything about
    electronics? want to help me with my project or you just want to
    slobber all over the keyboard?
     
  9. Phil Allison

    Phil Allison Guest

    "BobGoogle "


    ** Go ahead, Bob - make my day .......

    Post your wacky Q over on "sci.electronics.design ".






    ........ Phil
     
  10. jasen

    jasen Guest

    If you kill someone who's working on a "disconnected" circuit (but you're
    feeding power into it) you may find forgiveness hard to come by.

    Bye.
    Jasen
     
  11. BobG

    BobG Guest

    Thanks for the cautionary warning Jasen. It is duely noted. Now do you
    have any technical info on how to modulate the inverter output to send
    about 10 amps back up the wire? Does it need to sense and adjust every
    half cycle or many times per half cycle?
     
  12. Phil Allison

    Phil Allison Guest



    ** LMFAO.


    This GG LUNATIC is a fair dinkum, bloody SCREAM !!!




    ...... Phil
     
  13. BobG

    BobG Guest

    =================================================
    Now Phil, try not to get all worked up. You might get an aneurism and
    God Forbid not be able to type anymore. It would be a true loss to the
    engineers on usenet to not be able to be insulted by a savant such as
    yourself. By the way, is your curriculum vitae available online? I'd
    like to see if you have really done anything world class in your life
    besides win the Aspberger's Trophy for most obnoxious personality on
    the entire Australian continent.
     
  14. Phil Allison

    Phil Allison Guest



    ** LMAO !

    This Google Groper LUNATIC is a fair dinkum, bloody SCREAM !!!





    ...... Phil
     
  15. BobG

    BobG Guest

    ===============================
    Go Phil! Post it again once more for all to see! The pride of the
    Southern Hemisphere!
     
  16. Phil Allison

    Phil Allison Guest

    "BobGoogle "


    ** Go ahead, Bob - make my day .......

    Post your wacky Q over on "sci.electronics.design ".

    Maybe one of the resident rocket scientists will give you enough half baked
    info to electrocute yourself.





    ....... Phil
     
  17. BobG

    BobG Guest

    ==============================
    What a pleasant friendly thought you've extended from down under. I can
    imagine how your coworkers look forward to your pleasant repartie
    everyday. "Here comes old PottyMouth Phil! Hey Phil! You wished any
    Yanks to be electrocuted today? We need more blokes like you to make
    the world love us! Keep it up!"
     
  18. jasen

    jasen Guest

    Not electronically.

    but there is this thing where you drive an induction motor at slightly faster
    than the internal magnetic field moves at (normally they run slightly slow)
    and it pumps energy back into the power line. I forget what it's called.

    Bye.
    Jasen
     
  19. jasen

    jasen Guest

    Phil has nothing on Rod Speed.

    Not That I'm particularly proud of either.

    Bye.
    Jasen
     
  20. BobG

    BobG Guest

    =============================
    Slip? Its caused by ELI the ICE man. But there aint no induction motor
    in a cheap msw inverter! Just a chopper to step the voltage up from 12
    to 140 and an h-bridge. The fancy grid ties need to sniff the v and/or
    i going in and out to stay in sync... somehow..... I bet Phil knows...
    but he aint sayin!
     
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