Hi everybody, Let start by saying I'd like to start a discussion about the expected life expectancy of electronic components for renewable energy systems: ...
27729
Steven Shepard
sbtdesigns
Apr 4, 2010 4:16 am
You should expect 20-30 years service from good quality solar modules. The balance of system electronics won't last nearly that long. Most inverters become...
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jerry freedomev
freedomev
Apr 4, 2010 5:28 pm
Hi Michael and All, Like wind generators, electronics can be designed for short or long life. To last a long time they need parts, design built to last by not...
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Stephen Cahill
toskynary
Apr 5, 2010 5:07 pm
Hello to one and all. Well the subject line is the question. Here are the parameters I can work with. Can go to a 2.5 meter HAWT turbine. Or mini wind farm ...
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mark page
pagefarm
Apr 5, 2010 9:32 pm
looking for recomendations of a wind machine that i can power my house with. Page Farm Brangus Quality Brangus Cattle ...
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Michel Stievenart
eolfan
Apr 6, 2010 2:06 pm
Hi Stephen, have a look to the Kestrel E300i http://www.kestrelwind.co.za/content.asp?PageID=60 my two cents... Michel ________________________________ De :...
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tom mack
tbhpmci
Apr 7, 2010 1:24 pm
Hi Michael- I have not operated any renewable energy apparatus. Generally the final demise of many (as pcb) soldered connections derives from degradation of...
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ann_larson12345
Apr 7, 2010 2:17 pm
hi there You may remember me as the moaning minnie from some weeks ago! I was asking if anyone was totally off grid and found that their system really worked...
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Frank Leslie
fleslie_fit_edu
Apr 8, 2010 5:10 pm
Check the Sandia Darrius rotor with Savonius starting. ...
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Lyn Schaeffer
littlesnitty
Apr 8, 2010 7:27 pm
I have run an Exide Electronics 6000 kw UPS as an inverter on my solar/wind system for 13 years 24/7 with zero problems, never shut it down once. This is a...
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Doug
dougselsam
Apr 9, 2010 6:26 pm
Thanks for a great reference Ian: I bought a Hialeah meter online (General Electric brand) and it arrived a few days later looking brand new, and it was cheap....
27739
windginny
Apr 12, 2010 4:07 am
whats the best way to test a load on a 1000 watt three phase gen with a bridge rectifier? i have 3 10 ohm 225 watt resistors. should i connect them in...
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Robert Bruninga
wb4apr
Apr 12, 2010 1:56 pm
Depends entirely on the voltage. ... windginny...
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JOHN MARTIN
jmartin778
Apr 12, 2010 2:49 pm
Good morning all, We bought a PM Alternator, 3 phase 48Volts with no wire markings. Please show us how to measure and identify each wire connector.Which one...
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Nando
nando37@...
Apr 12, 2010 6:43 pm
GREG: The best way is to know best what the generator is capable of. Measure the internal resistance with the gen at rest. What is the voltage generated ?. @...
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Frank Leslie
fleslie_fit_edu
Apr 12, 2010 6:43 pm
John, You didn't say how many wires there are?! If three-phase, there are three wires for a delta connection or four wires for a "Y" or "WYE". The output is...
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Nando
nando37@...
Apr 13, 2010 12:07 pm
Frank: Some 3 phase do NOT supply the common wire, Nando ... From: Frank Leslie To: JOHN MARTIN ; 'windginny' ; small-wind-home@yahoogroups.com ;...
27745
ann_larson12345
Apr 13, 2010 12:08 pm
Me again! We continue to have problems with Bornay customer service and getting parts. So I am wondering. If we decide to change turbines next time we have a...
27746
OOWONBS@...
billsf9c
Apr 13, 2010 12:10 pm
It seems common sense to me to start in series, lest you go over current. The next answer is to match the impedance of the generator. You want it to match the...
27747
Chris Mason
netconcepts_...
Apr 13, 2010 11:37 pm
I would recommend getting an electrician or technician involved. If you don't understand three phase, you need some technical help otherwise you stand a good...
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dougselsam
Apr 13, 2010 11:41 pm
John: If that is the 3-phase alternator I manufactured for you, it is a 3-phase permanent-magnet alternator and all 3 wires are equivalent. There is no...
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Neil Dennis
wombat_eagle
Apr 13, 2010 11:42 pm
Just wohdering, in the "thin" blade expeiment, did the blades have an airfoil curve or were they flatl Just looking at the idea of making some with sheet...
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tom mack
tbhpmci
Apr 13, 2010 11:43 pm
Hello Ann- (I)WindTurbineInstallations , 'device class' note: Windmills are comprised of aerodynamic , electric , electronic , and general mechanical...
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Doug
dougselsam
Apr 13, 2010 11:46 pm
Star (Y) wiring is typical of most 3-phase PM alternators used in wind energy, so regardless of who made the alternator, this is universal information. If...
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LaRell Nielsen
larell@...
Apr 14, 2010 6:53 am
There are two different types of 3 phase so you need to get someone to help you....
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jamarc39
Apr 14, 2010 4:28 pm
Hi. I have been running off grid for a couple of years now with PV but are now looking to connect a wind turbine to my system. I would like to set it up with...
27754
windginny
Apr 15, 2010 2:05 am
hi, what will happen if i run my the power from my gen to a bridge rectifier then to a 12 volt battery charger that only monitors the battery voltage and...
27755
windginny
Apr 15, 2010 5:55 pm
hi, can anyone recommend a voltage regulator for a 3 phase pm gen? I need one for a 1000w and a 1800 watt gen..my output volts from my rectifier is about...
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Nando
nando37@...
Apr 15, 2010 5:55 pm
GREG: This question is a very general question that should be re-directed with a specific one to your needs . The battery bank if an alternative energy source...
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Frank Leslie
fleslie_fit_edu
Apr 16, 2010 12:38 am
I used to have an Al blade that spun for many years until work-hardening took its toll. I made a carved profile in the end of a block of 2x4 lumber and pounded...
