The load controllers that have been widely used are from GP Electronics, UK
and Thomson and Howe Energy Systems, Canada - these controllers are
excellent for maintaining stable frequency and voltage, and are generally
for synchronous generators(single phase or three-phase). The one from New
Zealand is good for generators less than about 15 kW and single phase only.
The cost becomes too high for three-phase systems - as it suggests to use
one controller for each phases.
For induction generators, well established low-cost controller area
available from UK, Canada and Nepal. If you are interested I would be happy
to send you the info I have and their contact addresses.
From: Joseph Hartvigsen [mailto:jjh@...
Sent: Thursday, September 30, 2004 11:24 AM
Subject: [microhydro] Re: Electronic Load Controllers
I like what I've read and seen online about the powerflow unit if you
want very good frequency control.
If you only need rough voltage limiting control a simple circuit like
the one in the file triac.gif may do.
There is also a controller "humingbird" design on this group founder's
and a company named Thomson & Howe in BC Canada.
Hernando, an active group member is also developing a control unit and
may be looking for a test site.
It looks like you have enough power to consider a standalone direct AC
system. Systems smaller than ~5kW might not be practical in this mode
unless it were used just for running lights and heating with no motors
of any size.
Hartvigsen-Hydro Turgo Runners
--- In firstname.lastname@example.org
, "Ross Berry - Energy Source Ltd"
> Hi All
> I am looking for an electronic load controller suitable for a 230v
AC 50 Hz
> turbine. Typical O/P load of the turbine is about 30A. It is
> the controller will monitor the frequency, and dump load into
> water elements.
> Does anyone know of a source for these devices?
> Thanks for your assistance
> Ross Berry
> [Non-text portions of this message have been removed]
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