Thats what he says. . . He uses a brush-less alternatornot sure if that is considered an induction motor or not. . .
Best regards, Mark Dickson, NABCEP Certified Solar PV Installer Oasis Montana Inc. _____ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jeff Clearwater Sent: Friday, April 23, 2010 11:58 AM To: RE-wrenches Subject: Re: [RE-wrenches] Grid-tie hydro Hey Mark, Not that would be an advance! So if the grid goes down it doesn't fry the inverter? And it doesn't run away and overspeed and destroy the generator/motor or the wheel? That would be very cool. I should give Derik a call. Is he still using induction motors as generators? Or is this a perm. magnet model? Best, Jeff C. Village Power Design At 4:00 PM -0600 4/22/10, Mark Dickson wrote: 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 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: <mailto:m...@oasismontana.com> Mark Dickson To: <mailto:re-wrenches@lists.re-wrenches.org> '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 Oasis Montana Inc. _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org -- ~~~~~~~~~~~~~~~~~~~ Jeff Clearwater Senior Design Engineer Village Power Design Solar Design Consultation for the Commercial Sector http://www.villagepower.com goso...@villagepower.com Voice: 831-427-2799 Fax: 413-825-0703 245 Dufour St Santa Cruz, CA 95060 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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