Induction Generators [RE-wrenches]

[Pat Kiernan, Eco Electric, Inc.]

Richard and Wrenches,

I am working with two locals and Bob Matthews of Appropriate Energy
(250-679-8589, British Columbia) on the installation of a grid-tied 25 kW
hydropower induction generator system. Bob designed the system. The two
local guys laid all the pipe, set the machinery, and have made
arrangements to sell the power to our utility.

Assuming that the utility is cooperative, it looks like a fairly
straightforward installation electrically. A 575 volt induction motor will
be driven by a hydro turbine and tied to a utility 480 volt line through a
custom switchgear panel. The higher voltage motor is used due to magnetic
limitations (saturation) and losses which require the motor voltage to be
about 20% higher than the desired generation voltage. The local utility
requested that the system include safety switch gear that will disconnect
the generator from the grid during utility outages. Thomson and Howe of
British Columbia will build the switchgear panel.

Bob Matthews said that there are very few of these installations in the U.S.
that he knows of. He also indicated that it might be difficult to find the
appropriate induction generator for lower voltage systems (120 or 240 VAC).

I'll forward Bob Matthews coordinates to Neil


Pat Kiernan

Eco Electric, Inc.
PO Box 2389
Basalt, CO 81621-2389
tel/fax (970) 927-9270
e-mail: ecoelec at rof.net
----- Original Message -----
From: Richard Perez, Home Power magazine <richard.perez at homepower.com>
To: RE Wrenches <RE-wrenches at topica.com>
Cc: <herdmaster at elkinternational.com>
Sent: Friday, November 03, 2000 5:44 PM
Subject: Fwd: Induction Generators [RE-wrenches]


> Hello Wrenches
>
> I know zip about utility connecting induction generators. Can anyone
> please help this fellow out?
>
> Please respond directly to Neil at <herdmaster at elkinternational.com>,
> and Cc: me so I can get educated also.
>
> Thanks
>
> Richard
>
> >X-MindSpring-Loop: hp at homepower.com
> >Date: Fri, 03 Nov 2000 18:54:39 -0500
> >From: Herdmaster <herdmaster at elkinternational.com>
> >X-Accept-Language: en
> >To: hp at homepower.com
> >Subject: Induction Generators
> >
> >Dear Homepower,
> >
> >Do you know of any companies which manufacture small induction
> >generators for grid interconnect (1 - 10 kw). If not do you have a
> >contact who could provide me information on high eff. motor conversion.
> >I am trying to determine what kind of efficiencies I can expect? I need
> >a system which is high eff.
> >
> >Thanks, Neil Vandendool
>
> ------------------------------------
> Richard Pérez
> Home Power
> PO Box 520, Ashland, OR 97520  USA
> Tele: 530-475-3179
> FAX: 530-475-0836
> Subscriptions: 800-707-6585
> mailto:richard.perez at homepower.com
> Web: http://www.homepower.com
>
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