Does anyone knows were can I buy one of this here in Brazil? Thanks! Sergio...
3505
Jesse
jtownsend200...
Aug 4, 2012 2:20 pm
Howdy Y'all! I've been a member on here for while now and would like to build a wind turbine/solar panel setup for my house. I live in the DFW area and we...
3506
kk4hfj
Aug 4, 2012 2:38 pm
how many daily amp hours do you need? what is the average wind speed for your area, and how many hours per day do you get at that speed? ... -- Steve, KK4HFJ ...
3507
Doug
dougselsam
Aug 5, 2012 1:44 pm
I can address the wind part: If you live in a good wind resource, you can power a home with a 10 kW turbine. Smaller than that and you can make a dent in...
3508
jtownsend2004@...
jtownsend200...
Aug 5, 2012 1:56 pm
We average 1557kwh a month, so if my calculations are correct, 4.325 daily amp hours using 12V batteries. Monthly wind average speed is 11.6 mph. There are...
3509
kk4hfj
Aug 5, 2012 2:14 pm
1557 kWh monthly is 52 kWh daily 52 kWh / 12v = 4333 ah daily With 11mph avg winds, I might not bother with wind at all. You would need a wind turbine with 40'...
3510
jtownsend2004@...
jtownsend200...
Aug 5, 2012 4:45 pm
We average about 232 sunny or partly sunny days here. Â ~jesse ________________________________ From: KK4HFJ <solar@...> To: axialflux@yahoogroups.com...
3511
John P
dbsleder
Aug 5, 2012 4:46 pm
Jesse, that is a whopping lot of electricity! The first thing needed is to eliminate a lot of useage. It would be very hard to be able to produce that much...
3512
kk4hfj
Aug 5, 2012 4:48 pm
My suggestion is that you need to reduce consumption before designing a wind / solar set up, as your consumption is very high, and your natural resources are...
3513
Jim Morris
james-morris...
Aug 5, 2012 9:05 pm
I would suggest you take a look at absorbing solar energy with water heating panels and store the heated water in an insulated tank. Then you can generate...
3514
kk4hfj
Aug 5, 2012 9:23 pm
Remember folks, this is an diy alternator group. ... -- Steve, KK4HFJ http://www.green-trust.org http://www.essnmag.com http://arduinotronics.blogspot.com...
3515
James Morris
james-morris...
Aug 6, 2012 6:03 pm
I recognize that, but this is an appropriate response to the specific question posed. I referred to a generator as a possibility, and meant that as an axial...
3516
kenjud@...
kenjud...
Aug 6, 2012 6:10 pm
Hi. I'm relatively new to this group and have not posted before. I've found it very interesting. In reply to the last post re it being an alternator group, ......
3517
kk4hfj
Aug 7, 2012 12:00 am
Outback makes inverters that can be grid tied with battery banks. A simple dump controller takes care of charge control, regardless of source of power. Use a...
3518
kk4hfj
Aug 7, 2012 12:01 am
http://www.green-trust.org/windpowercalc/ will help you size a wind turbine for your application. ... -- Steve, KK4HFJ http://www.green-trust.org ...
3519
Nick Andrews
nicothefabulous
Aug 7, 2012 4:29 pm
Using the dump load to preheat your water heater works great! ... -- Nick A "You know what I wish? I wish that all the scum of the world had but a single...
3520
Ed Koetsier
ekoetsier
Aug 7, 2012 4:32 pm
Or.. A good quick and dirty dump load, for testing, for example, is plain old 100w 240v (or 110..)Â incandescent light bulbs. Everyone has then lying around...
3521
Snarky Gnome
jkrobbie
Nov 9, 2012 7:25 pm
Hello all, I would like to experiment a little with a small scale generator using a variety of prime movers (gas, diesel, steam, wind). That part is not a...
3522
solar@...
kk4hfj
Nov 9, 2012 8:21 pm
Generators do not produce a particular current, they supply whatever current is being called for by the load, right up to rotor lock or coil burnout. Steve...
3523
simone
k5mmx
Nov 9, 2012 8:22 pm
I Think the best way is to use/adapt a marine wind generator, they are already made for low RPM and some have built in charging control (other are just a bare...
3524
kurtee
Nov 9, 2012 8:22 pm
A while back I built one of these induction motor generators. http://www.qsl.net/ns8o/Induction_Generator.html The key is to spin them a slight bit faster than...
3525
solar@...
kk4hfj
Nov 9, 2012 8:24 pm
That would be wonderful if this was a induction generator group. Sadly, we only discuss axial flux permanent magnet alternators here. It is possible to build a...
3526
Snarky Gnome
jkrobbie
Nov 9, 2012 8:58 pm
That's my point. I'd like to try building an axial flux generator that is small in both physical size and wattage output, but stable at hertz and voltage. I...
3527
solar@...
kk4hfj
Nov 9, 2012 9:01 pm
hz and voltage stability is controlled by the stability of the device driving the alternator. Amps out is determined by the load you apply, the ability of the...
3528
Snarky Gnome
jkrobbie
Nov 9, 2012 9:44 pm
Okay, this is some of the info I'm looking for. Any ideas, based on the parameters I've given, how many coils I would need? How many windings per coil and what...
3529
kk4hfj
Nov 10, 2012 2:13 pm
3 coils per phase, 35 windings per coil for 12v, 72 for 24v, 144 windings for 48v. ... -- Steve, KK4HFJ http://www.green-trust.org http://www.essnmag.com ...
3530
Chris Stokes
stokes0520
Nov 11, 2012 4:44 am
I wonder if you can get 200 watts with a 6 inch rotor at 700 rpm. Most of the Piggott examples have a larger diameter, like 10.5" for a bit higher power. What...
3531
kk4hfj
Nov 11, 2012 1:06 pm
Just make smaller coils, with smaller magnets. The diameter is not critical, just the ratio of magnets to coils, and the number of turns per coil. You may have...
3532
Snarky Gnome
jkrobbie
Nov 11, 2012 7:50 pm
Let me phrase the question a different way. First, here are the parameters: -200w -60hz -24v -3 phase -at 900rpm (let's just make this constant to simplify...
3533
kk4hfj
Nov 11, 2012 7:53 pm
You already answered the number of coils. 3 per phase, 3 phase, is 9 coils. That means 12 magnets per side (24 total). Size the coils so that the magnet passes...
