Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Generator output to Grid Tie Inverter

  1. Mar 16, 2010 #1

    I have a Lister generator that is capable of producing approx 5KW of power from an attached ST alternator.

    I am in australia so our standard power is 240v at 50hz

    I have a grid tie inverter for my solar panels - this unit accepts between 150v dc in to 500vdc It has a single input string only - what i would like to be able to do is to use the Grid Tie inverter as a load shed option for my generator.

    When my Lister is operating at less than optimum (approx 80% of rated output is optimum) then i would like to dump power to the grid (we get paid 60c per KWH for this) and i run the lister on Vegoil/Lard so it is essentially free to run - maintenance costs on the lister work out to be approx 10c per KWH of electricity production.

    Situation 1) - The Solar panels are putting out less than their optimum power output for whatever reason - early morning/late afternoon/cloud cover. - I would like to be able to add DC voltage in series to boost the Voltage coming out of the panels - all of the panels are currently connected in series and theoretically deliver around 270v to the Inverter.

    I have access to server based power supplies that can generate 12vdc at 32amps in a very stable way - would it be possible to series connect a number of these to the DC output of the panels to add their voltage/current to the inflow to the Inverter ?

    Situation 2) When the panels are generating no power be able to push out 150vdc from (say 13) of these power supplies into the panel - but to current limit it to a reasonable amount based on pwm or some such so that i was not overloading the lister ?

    thanks for any input in advance

  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted