scott suddreth wrote: > > Greetings Hydro folks, > > My name is Scott Suddreth and I'm in Boone, North Carolina in USA. I have a > transmission issue that I would like to put out on the table. I am a > Renewable Energy consultant who currently has some hydro clients. One client > has the following situation. 23 feet of drop (head) and 150 gpm of flow. The > fellows existing renewable energy system is at 24VDC. I have looked at the > Harris Permanent Magnet unit and the Canadian Stream Engine. Both units can > supposedly generate around 300 watts continuously at this site. However the > distance to the home is 560 feet which means a HUGE wire size for a 24VDC > system. Don Harris suggested that I look into the HydroMax controller as he > had heard that it might be able to make our situation more affordable. I also > looked at a 3 phase system but thought that the low head made it undesirable. > What do you folks recommend? >
We have used the HydroMax controller as well as its predecessor in many installations over the past 10 years. I stopped counting once our accumulated experience with these controllers reached 50 years - it is well past that now and we've never had a failure. We have used them on all our Banki-crossflow installations and have also used them at Pelton wheel, Turgo wheel and Aquair UW propellor turbine sites. The current models allow the input voltage to go well above the previous 165VDC limit - I think it is now 250VDC, but best check this out. Remember that the HydroMax controller provides linear series regulation as well as being an efficient DC to DC step down controller. This allows the turbine to speed up when full power is not required and can be a problem for turbines that can't handle prolonged freewheeling (unlikely to be an issue at 23 feet head). This can be dealt with for example by using a Trace C40 to drive a dump load and hence ensure that the HydroMax controller never sees the battery fully charged. Regards, Max Enfield Planetary Power ------------------------ Yahoo! Groups Sponsor --------------------~--> What would our lives be like without music, dance, and theater? Donate or volunteer in the arts today at Network for Good! http://us.click.yahoo.com/TzSHvD/SOnJAA/79vVAA/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/
