I just spoke with Derek at Hi Power and he insists that his LV1500-120V unit can run with no load present and not burn out. He recommends tying it directly to a PVP inverter with no diversion load-doesn't get much simpler than that! That is a system that will produce 650watts continuous for under $7000.
Btw, the customer has the rights to the creek and is ready to go. Thanks Dave and Jeff for the lead! Best regards, Mark Dickson, NABCEP Certified Solar PV Installer T Oasis Montana Inc. _____ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Bruce Geddes Sent: Thursday, April 22, 2010 2:36 PM To: RE-wrenches Subject: Re: [RE-wrenches] Grid-tie hydro SMA use the Windyboy with a rectifier/diversion box for this application. ----- Original Message ----- From: Mark Dickson <mailto:m...@oasismontana.com> To: 'RE-wrenches' <mailto:re-wrenches@lists.re-wrenches.org> 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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