Pure sine wave inverter feedback

Discussion in 'The Projects Forum' started by lovelyhakeem, Sep 26, 2013.

  1. lovelyhakeem

    Thread Starter New Member

    Dec 15, 2010
    23
    0
    Dear members , I have designed Pure sine wave inverter
    Input = 12 v DC
    Output = 320 v DC , 220 v AC
    Transformer = 400 W Ferrite core transformer .
    In 1st stage I have used push pull topology to convert 12 v to 320 and in second i have used Microcontroller pic16f684 , IR2110 , And mosfet to convert 320 DC to AC.
    mine main issue that circuit work well at no load condition but voltage drop at load (to about 265-270 V DC ) . I have used feedback of SG3525 but after all still voltage drop. Any idea how to maintain voltage constant . PLZ PLZ help
    Regards
    Qamar
    http://imageshack.us/photo/my-images/20/lwfw.png/
    http://imageshack.us/photo/my-images/801/p5gc.png/
     
  2. Experimentonomen

    Member

    Feb 16, 2011
    331
    46
    Why did you post a second thread with the exact same question ?
     
  3. lovelyhakeem

    Thread Starter New Member

    Dec 15, 2010
    23
    0
    Dear bro , I have posted it only once, but if i have posted twice mistakenly then Sorry , but instead to mention it , plz help me to solve my problem , I will be thankful to u.
     
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