[RE-wrenches] Grid-tie hydro

[Bruce Geddes]

SMA use the Windyboy with a rectifier/diversion box for this application.
  ----- Original Message ----- 
  From: Mark Dickson 
  To: 'RE-wrenches' 
  Sent: Friday, April 23, 2010 6:04 AM
  Subject: [RE-wrenches] Grid-tie hydro


  Hello Wrenches, 

  Got one for you. . .

  We have a customer that has great potential for a micro-hydro system and already has the grid on his property.  The obvious way to tie the turbine unit in would be to go back through batteries and a GVFX or XW.  In trying to eliminate the batteries and the inefficiencies I want to look at using a battery-less grid-tie inverter.  I am assuming that I could use a small inverter such as the PVP 1100 and high-voltage Stream Engine.  The problem I am trying to work around is how to divert the ~240DC output of the turbine, if and when the grid goes down.  Would this be as simple a placing a relay on the AC side of the inverter and having it switch on/off a large diversion load?

  For the diversion load I was thinking I could just series up a set of water heater elements to get to the necessary voltage.

   

  Has anybody accomplished this before?  Jay?  Are there any other elegant solutions for this?

   

  Has anybody successfully used a WindyBoy with hydro?

   

  Best regards,

   

  Mark Dickson,

  NABCEP Certified Solar PV Installer T

  Oasis Montana Inc.

   

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