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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