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  • zpsolar
    Junior Member
    • Sep 2010
    • 3

    #1

    Panel and inverter compatibility

    I am completely new to the subject and looking forward to receive your advice. I just want to understand the terminologies, and then hopefully I will be able to combine my kits.

    I have a 500W inverter rated power is 0.5 KW, MPPT Range (VDC) is 46-75. My solar panel is 95 W,
    Maximum System Voltage is 750 V, Open Circuit Voltage is 22.1V and Maximum Power Voltage (MPV) is 17.9 V. Is this panel compatible with the inverter? Does the inverter MPPT range means that the solar panel or solar panel array must produce voltage between 46 and 75?

    Thank you for your help in advance.
  • Mike90250
    Moderator
    • May 2009
    • 16020

    #2
    > .5 KW, MPPT Range (VDC) is 46-75

    Well, this is something new. Do you have a link to the Mfg ?

    your 95W 17.9V panel will not likely be able to power this inverter at all.
    You can charge a 12V battery with the panel, and then the battery can power a small inverter for a short time.

    The thing to remember, is power harvested, minus looses of recharging the battery, is all you can use from the battery. You can't run a normal household off a battery and a 95w panel. You can run a few light bulbs, a few hours a night from it.
    Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister

    Comment

    • zpsolar
      Junior Member
      • Sep 2010
      • 3

      #3
      Thank you for your reply.

      You can find a same kind of inverter at http://www.solarsystemsupplier.com/U...frequency).pdf . Mine is not exactly same, but a very simmillar one from this manufacturer.

      Being new in this field, my purpose in the first step is to experiment with the solar system rather than run a household. Also, I want to carry on a software test on the RS232 interface of the inverter - that's why would be so great to fire up the inverter.

      Would you tell me please how many or what kind of solar panels do I have to put in place in order to fire up the inverter?

      Comment

      • Mike90250
        Moderator
        • May 2009
        • 16020

        #4
        The inverter you list, is a Grid InterTie Inverter. It's made to push power into the AC grid, and will not work to power a TV or blender.

        For it to work, you need to have several identical solar panels, wired in series, in your case, you need 2 or 3 more panels . Different panels will need their own size caculation.
        Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
        || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
        || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

        solar: http://tinyurl.com/LMR-Solar
        gen: http://tinyurl.com/LMR-Lister

        Comment

        • zpsolar
          Junior Member
          • Sep 2010
          • 3

          #5
          Thanks for the reply, it is really great you have been trying to help out for newbies like me.

          That was my understanding too that it is a grid tie inverter. That's fine, my ultimate objective is to get someone who knows what he is doing to build a grid tied array for me (with a bigger inverter and mote panels). First I was going to make some experiment on my own to understand better the technology and being a software person just wanted to test RS485 interface of the inverter. I also wanted to understand the basics of system design such as relation between number of panels and the inverter MPPT. So that's the background of my silly questions.

          What do you think connecting 4 x 10 W panels, each around 16V Max Power Voltage, would it power the inverter? The inverter MPPT range is 46-75V, so I thought 4 x 16V would be enough. Is that correct or should be the compatibility with the inverter calculated differently?

          Comment

          • Mike90250
            Moderator
            • May 2009
            • 16020

            #6
            Originally posted by zpsolar
            .....
            What do you think connecting 4 x 10 W panels, each around 16V Max Power Voltage, would it power the inverter? The inverter MPPT range is 46-75V, so I thought 4 x 16V would be enough. Is that correct or should be the compatibility with the inverter calculated differently?
            It should work, but I doubt you will be able to get any power out of it, if it would even fire up. I'm sure it's looking for 30-60 W panels, and feeding it 40w may barely get it to start up. It will need to be plugged into a outlet or something where it can monitor clean grid power for 5 minutes, before it will start up.
            Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
            || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
            || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

            solar: http://tinyurl.com/LMR-Solar
            gen: http://tinyurl.com/LMR-Lister

            Comment

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