[RE-wrenches] Grid-tie hydro

[Mark Dickson]

That’s what he says. . . He uses a brush-less alternator—not 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-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at 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-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at 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:Mark at OasisMontana.com> Mark Dickson

To:  <mailto:re-wrenches at 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.

 


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-- 

~~~~~~~~~~~~~~~~~~~
Jeff Clearwater

Senior Design Engineer

Village Power Design
Solar Design Consultation for the Commercial Sector
http://www.villagepower.com
gosolar at villagepower.com

Voice: 831-427-2799
Fax: 413-825-0703
245 Dufour St
Santa Cruz, CA 95060
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