Hi Manfred, Nando; Martin and all, I can make my comments about this discussion. We was using at MTF some chinesse generators with brushes in our smaller MHP kits, say 5 - 10 kW, because stock availability in Chile and low price; but you are right that AVR's (if we can talk of real AVR's indeed) are bad. We save the original AVR problem putting new special ones onto chinesse PEM machines, designed and constructed by Ing. Alfredo Cox, here in Concepcion. For great power, more than 10 kW we are using very best Marelli-Motori and Stamford brushless alternators, with very good AVR's. Regards, Carlos Bonifetti -------------------------------------------------------------
----- Original Message ----- From: "Manfred Mornhinweg" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, October 17, 2005 5:27 PM Subject: [microhydro] Re: induction motor as generator derating for different frequency > Hi Nando, Martin, and all, > > > I am NOT fond of the Chinese generators, the AVR is lousy and problematic > > and the generators use brushes. > > I have no practical experience with them, but other people have told me > the same about these Chinese generators. And most certainly I would NOT > like to put a brush-type generator into my future plant! As an > electronician, I'm confident that I can fix (remake) a poor regulation > circuit, but certainly I cannot convert a generator to brushless! :-) > > So I would certainly prefer to spend a little more on a good, brushless > machine. But these are available too in Chile. > > For Martin it will probably be best to decide what exactly he needs, > then compare the price of buying a machine in the USA and bringing it > here to use at a derated power, with the price of a good 50Hz machine > bought here. I don't know the outcome of this comparison. > > Manfred. > > ---------------------------- > Visit my hobby website! > http://ludens.cl > ---------------------------- > > > > > > 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 --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/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/
