Hi Joe,
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. Ghanashyam -----Original Message----- From: Joseph Hartvigsen [mailto:[EMAIL PROTECTED] Sent: Thursday, September 30, 2004 11:24 AM To: [EMAIL PROTECTED] 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. http://www.powerflow.co.nz/powerflow1.html If you only need rough voltage limiting control a simple circuit like the one in the file triac.gif may do. http://groups.yahoo.com/group/microhydro/files/ There is also a controller "humingbird" design on this group founder's site. http://www.microhydropower.net/download/manuals.php 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. Joe Hartvigsen-Hydro Turgo Runners http://h-hydro.com --- In [EMAIL PROTECTED], "Ross Berry - Energy Source Ltd" <[EMAIL PROTECTED]> wrote: > 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 expected that > the controller will monitor the frequency, and dump load into existing hot > 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] Does your company feature in the microhydro business directory at http://microhydropower.net/directory ? If not, please register free of charge and be exposed to the microhydro community world wide! NOTE: The advertisements in this email are added by Yahoogroups who provides us with free email group services. The microhydro-group does not endorse products or support the advertisements in any way. More information on micro hydropower at http://microhydropower.net To unsubscribe: send empty message to [EMAIL PROTECTED] Yahoo! Groups Links ------------------------ Yahoo! Groups Sponsor --------------------~--> Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar. Now with Pop-Up Blocker. Get it for free! http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/FGYolB/TM --------------------------------------------------------------------~-> Does your company feature in the microhydro business directory at http://microhydropower.net/directory ? If not, please register free of charge and be exposed to the microhydro community world wide! NOTE: The advertisements in this email are added by Yahoogroups who provides us with free email group services. The microhydro-group does not endorse products or support the advertisements in any way. More information on micro hydropower at http://microhydropower.net To unsubscribe: send empty message to [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/microhydro/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
