It has a 14 magnet rotor inside and our skewed stator core for easy turning - up to 1600 watts max output! NO COGGING - Cut in speed of 6 MPH This unit comes with: Freedom PMGTM (PERMANENT MAGNET GENERATOR) WITH 14 MAGNET ROTOR. Freedom PMGTM has no brushes, very dependable! 125,000 hours + of rated bearing life. One heavy duty bridge rectifier for converting 3 phase to DC output. Fully galvanized mounting Bracket and Heavy Duty two arm tail assembly. Tail fin measures 29" tall for maximum tra
ALEKO WGVQ300 Three Phase Permanent Magnet AC Synchronous Vertical Wind Generator 300W 24V Wind Generator Turbine
From Manufacture: A wind turbine is a popular name for a device that converts kinetic energy from the wind into electrical power. Technically, there is no turbine used in the design, but the term appears to have migrated from parallel hydroelectric technology (rotary propeller). The correct description for this type of machine would be aerofoil-powered generator. Our Aleko Wind generator will provide you with the power you need for your home or your business. Product Description: Low star
The Aleko WG300 24V is popular low start up wind speed wind turbine in home yard, cabins, boats, advertising signs, telecommunications tower, etc. Thousands have been sold and are in use worldwide. People have the particular inclination for it’s clean, aerodynamic lines and its quiet and continuous operation. Without any doubt Aleko WG300 accumulates more energy than any other comparable wind generator available, you’ll always see spinning in the lightest of breezes!
WINDMILL (DB-400) 400W 12V Wind Turbine Generator kit residential, agriculture & marine. Built in MPPT charge controller + automatic and manual breaking system & volt meter. DIY installation providing off-grid green energy power.
WindMill 400W Wind Turbine The 400W wind turbine is our economy level wind turbine, made specifically for off-grid residential use in mind. Its DIY set-up instructions and with all the materials needed provided for, you will be able to set the wind turbine up in no time at all. The 400W wind turbine is durable, low maintenance and the lightest wind turbine in our line up of wind turbine having weighing at only 16.8 lbs. Coated with special high weather tolerant protection spray to protect the wi
WINDMILL 600W (12V / 24V) (50A / 25A) Wind Turbine Generator kit. MPPT charge controller included (Amp, Volt & Watt display) + automatic and manual braking system. DIY installation.
WindMill 600W Wind Turbine The 600W wind turbine is our mid power level wind turbine, made specifically for off-grid residential use in mind. Its DIY set-up instructions and with all the materials needed provided for, you will be able to set the wind turbine up in no time at all. The 600W wind turbine is durable, low maintenance and the most powerful wind turbine in our line up of wind turbine having weighing at only 26 lbs. Coated with special high weather tolerant protection spray to protect t
Earth4Energy questions, how long and how cheap?
I might be looking into buying that kit, and im wondering like what is the cheapest easiest first porject it shows you how to do, and for how much?
and how long does that first project take?
and how long do the other project approximately take and for how much $?
thank you very much
Eath4Energy is a scam. Please see my review at http://www.nlcpr.com/Deceptions6.php
If your motivation is to reduce your energy bills, then you should first look at conservation projects. These are things like using low flow shower heads, replacing old appliances and adding more insulation.
If your motivation is to generate some energy for learning purposes or as a matter of principle, then consider the following:
Building a wind generator yourself is not a simple project. If you can build an utility trailer for your truck (welding, metal fabrication) then you could certainly tackle the job. There is a great book available from www.otherpower.com called Homebrew Wind Power plus you can order any parts and assemblies that are beyond your abilities to fabricate. Cost of turbine is about $2000 and you need a tower as well. There are cheap units at some hardware stores but they are garbage compared to to the unit designed by www.otherpower.com
A more realistic project would be to get a commercial solar panel (making your own from broken cells on eBay is not worth it), inverter, charge controller and battery and using it to power some things in your house. For about $1000 you could have something to power a small computer. A complete system to power your home is more in the $30,000 range.
There are, unfortunately, no cheap ways to make your own power as Earth4Energy is promoting other than perhaps getting lucky in an eBay auction or purchasing a solar system from a bankruptcy sale.
Do your conservation measures first. Then read Homebrew Wind Power, read the solar links at http://www.nlcpr.com/Links1.php and then decide what type of project you are up for. By then, you will know exactly what you want to do.
Grid connect Controller for wind turbine driven induction generator (async motor)?
Thanks to your many very helpful answers to my previous questions I was able to find a company that sells such a device. As you may recall, I was intrigued by this device: http://www.clariantechnologies.com/main/page_home.html. It is a vertical axis wind turbine driven async motor that acts as an induction generator that plugs directly into an existing outlet in your home. No inverters, no batteries. Sales price around $500. With an electric meter (a freebie from our power company) than can run backwards, this would allow me to greatly reduce my energy bill all at a very low cost. To make the cost even cheaper, and to increase the power output, I want to make my own wind turbines, and use my own async motors. So all I need is the controller.
I have found a company that sells such a device: http://www.prairieturbines.com for $830. It connects a 5500 watt wind turbine driven async motor directly to the grid. No inverter, no batteries. It uses a “hall-device” to measure the RPM, it provides about 1 AMP to the motor to energize its coils, 50amp solid state “zero-cross relays”, capacitors, 30amp breaker/enclosure, an exterior mounted disconnect, and an interior-mounted fused-control voltage switch. This is it!!!
So my question is, does anyone know how to build this controller. This company doesn’t sell the plans to this, and $830 is too high for me. I am sure I could build this with components for less that $400. If there is any electrical engineering person out there that can help, this will be a challenge, but it is great knowing that someone already has figured this out and is selling it.
Look at the Prairie Turbines site again. The price of the micro-controller including the hall device is $255. The $45 book provides a complete list of material and instructions to build everything else.
The micro-controller monitors the speed sensor and provides control signals to two solid-state relays. One relay connects the motor to the grid when the speed reaches the motor’s 1800 RPM synchronous speed and disconnects the motor if the speed drops below 1800 RPM. The other relay is energized to release the brake when the controller is energized and de-energized by the controller when the motor speed exceeds the maximum safe operating speed. If this occurs, the controller apparently must be manually reset.
I did not find the maximum safe operating speed stated on the web site. If the full load speed of the motor is 1750 RPM, the full load slip is 1800 minus 1750 or 50 RPM. The speed at which the motor would generate full load current and present full load torque to the turbine is 1800 RPM plus the full load slip or 1850 RPM. With the design described, a three-phase motor is connected to a single phase source with capacitors connected between the source and the third motor phase. That is likely to increase the motor slip somewhat.
I am not sure what happens if the motor is driven above the speed at which it generates full load current. A three-phase motor operating as an induction generator connected to a three-phase supply has a torque vs. Speed curve that is something like the mirror image of the motoring torque vs. Speed curve. The curve is likely different with the single-phase connection used in this case. I don’t know what the speed vs. Current curve looks like in either case, but I will see if I can find it. I am also curious to know if the Alan Plunkett listed on the web site as an author is the Alan Plunkett that is well known author of technical papers on inverter and variable frequency drive subjects.
I found information indicating that, for a 3-phase motor connected to a 3-phase supply, the speed vs. Current curve for induction generator operation is like a mirror image of the speed vs. Current curve for motor operation. That would mean that the maximum speed would need to be limited to the synchronous speed plus the full-load slip. The web site indicates that the full-load speed for the motor that they used is 1725 RPM for 3-phase operation. That would make the maximum speed 1875 RPM plus the additional slip due to the single phase with capacitor arrangement.
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This unit comes with: Freedom ll PMG (PERMANENT MAGNET GENERATOR) WITH 28 MAGNET ROTOR Freedom ll PMG has no brushes, very dependable 125,000 hours + of rated bearing life Two heavy duty bridge rectifiers for converting 3 phase to dc output Mounting Bracket and Heavy Duty 2 arms tail assembly Tail fin measures 29" tall for maximum tracking No slip rings to fail or replace. Wire tension system Comes with 11 Raptor nylon carbon fiber composite blades Aerodynamically tapered Genuine RAPTOR GENERAT
ALEKO WG450A Wind Generator is 450W 24 volt model. Fresh 2013 Version just shipped from the factory. This is the latest design with 5 blades. This item is new in the factory unopened box. Comes with instruction manual.
WINDMILL 1500W 24V 60A Wind Turbine Generator kit. MPPT charge controller included + automatic and manual breaking system & Amp meter. DIY installation.
WindMill 1500W Wind Turbine The 1500W wind turbine is our most high powered wind turbine, made specifically for off-grid residential use in mind. Its DIY set-up instructions and with all the materials needed provided for, you will be able to set the wind turbine up in no time at all. The 1500W wind turbine is durable, low maintenance and the most powerful wind turbine in our line up of wind turbine having weighing at only 33 lbs. Coated with special high weather tolerant protection spray to prot
Building a Micro Wind Turbine: Go Off-Grid with the Wind Power Generator: (Wind Power, Power Generation)
Getting Your FREE Bonus Download this book, read it to the end and see "BONUS: Your FREE Gift" chapter after the conclusion. Building a Micro Wind Turbine Go Off-Grid with the Wind Power Generator If you wish to off-grid and generate electricity by harnessing the power of the wind, then you have certainly come to the right place. We have come up with a highly comprehensive guide that will let you build a well-equipped and functioning wind power generator in no time. Wind energy is one of the mos
how to make a mini wind tunnel?
Our group is making a mini wind tunnel for the college exhibition (STD XI). we want to study the pattern of air movement around various types of vehicles and aircraft(toys) by leaving a trail of gas or smoke.there are many other ways of doing so like sticking fine strips of paper at different points on the vehicle, but we want to use the old method by using smoke as it will give a clear picture of air movement. please give some ideas especially on how to make the smoke generator for the same.
Smoke is a problem because most smoke will also contain carbon monoxide, and that’s not the kind of stuff you want your “exhibit” producing at a science fair.
I have absolutely no idea if it would work…but…Halloween is over and many retailers will prbably be having clearance sales on their Halloween items. I know that those “fog machines” produce their own cloudy “stuff”. I’d suggest you look into a buying a discounted fog machine, now that the sales are on.
You can also make your own fog machine if you want.
Best Solar Power Home related magazines?
We’re planning to incorporate Solar design features into our next home – actually, we’re looking at wind & solar. Which magazines are worth subscribing to? Which are not?
I should specificy that we’re more interested in passive solar than in solar panels.
Actually, check out some of the links on http://www.builditsolar.com
If you are going to do much of the work yourself, you will be sadly disappointed by what is available in print:
Homepower magazine http://www.homepower.com for example, it most often reads like a sales brochure, because “hands on” to a number of people usually means buying most of the system ready made in a kit. Hands on for me is breaking out the soldering iron and doing point to point wiring on components to construct the regulators (often called charge controlelrs.) Too much chaff for a hands on person to find useful. Some of the ads are useful.
Nuts and Volts http://www.nutsvolts.com/ is a bit better, but their topical coverage is far ranging so you do not always get as much as you would like. Spendy, might be better to sheck it out at the bookstores and buy it off the newstand when a decent article appears.
Mother Earth news http://www.motherearthnews.com is pretty good, but the best bang for the buck there is to buy their archives on CD rom, which is 3 disks, broke down by decade. There is a fair amount of substance, sometimes you encounter an article that sought to convert one item over to another, only it would have been much less work and cost for them to have started out from ground level and construct (with used parts) the same thing, which they sought to construct in the first place, a solar charged electric tractor is one specific item I have come to mind as one the author of the article could have done better. You might find the book they published “The Mother Earth News Handbook of Homemade Power,” which is not real good for specifics in some areas, but is good for some ideas if you are good at working from thumbnail sketches, you can fill in the blanks where there are gaps in detail. The book was written more as a “primer” than a complete compillation.
For your wind systems, there is a lot to be found at http://www.lindsaybks.com Hugh Piggott has written a few good books on the home construction of windmills. The LeJay Manual is a good reprint that has a lot of good info for home constructing- down to the wooden propeller profiles. As well as the book “Generator Secrets.”
One of the good sources for materials and tools supplies and systems is Northern Tool http://www.northerntool.com
One thing on propeller materials- never us ABS and never use PVC. As tempting as those can be they break. When they break, the blades will go for a great distance in modest winds. They can kill too.
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Description: DC 3.7V 10000rpm 7mm Hollow Cup Motor Mini Electric Coreless Motor Specification: Rated voltage DC 3.7V Rated speed 10000rpm Rated current ? 55MA Stall current ? 100MA Starting voltage ? 1.0V Quantity Features: Perfect for DIY model aircraft helicopter and a variety of electric drive products. Package Included: 1 x Hollow Cup Motor
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What is the establishment cost for a coal burning factory?
I need this for a science assignment. Holy crap do I hate science.
So yeah, what is the establishment cost to set up a coal burning factory? (Where the coal is transferred into energy)
The current establishment cost of a coal fired power station is about $2000 per kilowatt of power produced. Over a 50 year life; this is quite low compared with establishment costs for wind and solar power generation, and a lot (hundreds) of wind generators are needed to produce the same power output of a large coal powered generator. This is why it is proving difficult to replace coal for large scale power generation.
Here’s a wiki ref:
How can laws of thermodynamics applied to the system of wind power?
Apply the 1st and 2nd laws to the wind powersystem. State what conclusions (environmental, economic…) can you draw from applying the 2 laws.
Energy conservation can show how efficient/cost effective a wind power generator can be.
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bayite DC 6.5-100V 0-100A LCD Display Digital Current Voltage Power Energy Meter Multimeter Ammeter Voltmeter with 100A Current Shunt
Main Specifications: Working voltage: DC 6.5 ~ 100V Measuring Accuracy: 1% Power Consumption: 0.2W Measurement speed: 2 times/s Store Energy data when power off. Can be reset to 0. The blue backlight can be turned on/off manually Test Range and Display format: 1.Active Power test range: 0~10kW 2.Energy test range: 0~9999kWh 3.Voltage test range: DC 6.5~100V 4.Current test range: 0~ 100A Precautions 1. This module is only suitable for 6.5~100V DC power. 2. Applied load should not
ECO-WORTHY 12V to 110V 900W Wind Solar Power: 5pcs 100W Poly Solar Panels + 1pc 12V/24V 400W Wind Turbine + 1KW 12V-110V Off Grid Inverter + Cable Connector for Home Use
400W Wind Turbine Generator Rated Power:400W Service Voltage:12-24V Cut-in Wind Speed:2.5m/s Rated Wind Speed:10.5m/s Maximum wind speed:35m/s Rated Rotate Speed:800r/min Battery capacity:200-400AH Output Voltage(AC):110-220V Control system:Automatic fan dedicated controller Generator style:Permanent-magento-phase A.C Fan blade quantity:3pcs Wind leaf material:Carbon fibre composite Rotor diameter:1.2M Tower diameter:Suggest more than 80mm Altitude of towe:4.5M-10M Pole diameter:Out diameter 7.4
How much wind does a wind turbine need to make energy for a small island?
what would be the best turbine [large or small] to use on a small island that has appriox 128 people. i need to also know how much wind there needs to be for a wind turbine to produce energy. Sources would be nice thanks
As can be seen from the power curves in the first link, there is nothing till about 12km/h wind, then only a small fraction of the maximum power which is reached at around 28km/h. It is important to undertake a proper survey, as wind shear can have a large influence. The Vestas site has advice about planning, but not much detail. Send them an email.
In this kind of situation, with no grid to fall back on, it is usual to have diesel generators running to smooth the load. These are special “low load” types (see the 6th link below). They run on no load when the wind is there, synchronised with the wind generators.
I should warn you that it is easy to convince yourself that a wind system is ok when it isn’t, because you want it to be true. There are all sorts of considerations. It may make sense to have oversized turbines so you still get enough power despite bad wind. What happens when no-one is using power? One or two big ones or lots of smaller ones? You need the turbine manufacturer and/or experienced consultants to help make these decisions with a proper site appraisal. If the trees are all horizontal that is a good start. It should definitely be what most people would think is a windy place, and with steady winds. Solar panels are easier to engineer, perhaps lower risk, but it does depend on where you are too. No clouds in that case. It is not uncommon to have them together, with the low load diesels.
You probably already know the peak power demands from existing power supplies. You should try to factor in for 25 years growth of island power usage too. The figure varies, especially because or airconditioning/heating situation. One could say a typical is 4kWh per house per day. You have to consider community buildings too. This figure takes no account of peak demand anyway. It tells you how much fuel you need for diesel generators.
Vestas is a Danish pioneer in larger wind systems, with some innovative features.
The first link shows power versus wind speed.
The second link also has these for the latest models, look for the brochures. It also gives advice about
The third link has a list of other manufacturers.
The 4th and 5th links have pictures of wind farms with some details that could be helpful for contacts.
The sixth link is about low load diesels.
How to get prepared to find a job as a wind turbine technician?
I am currently on my last year of A&P school to work on aircraft but in my region of Northeast Indiana, I’m starting to see more and more wind farms popping up. I am considering working on wind turbines and understand the nasty weather, heights and amounts of climbing that job can bring. I’m just not sure if acquiring my A&P could get me the job and the necessary skills for that line of work. Am I ready to start talking to an employer to get in?
Climbing 200 feet is important. Once a year someone has to climb down and hand inspect each blade. Being comfortable working on machinery at 200 feet is required. You don’t climb much in nasty weather, but you will climb to the nacelles in winter.
Most windmills use a induction generator with a back to back inverter. The generator generates power at whatever frequency, and the inverter converts it to 60hz. Being able to trouble shoot this type of equipment is a plus.
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How big a generator do I need to run the essentials for a home, including a well pump?
We are wanting to purchase a generator for emergenices, but how big do we need one to be? I am especially interested in the running of our well pump for water (we are in a rural area). What type of generator would work best? Are there solar alternatives?
The smallest I would recommend is 5000 watts. This should be enough to operate the well pump, small cooking appliances, lights, television, fridge, etc. Power will be limited and you will have to be careful not to overload the generator. I power my house with a 5500 watt generator. You should also consider installation of a proper transfer switch and be aware of the dangers of carbon monoxide poisoning.
Read through my generator page listed below for more information.
If your main goal is to power the well pump solar or wind are not feasible. The power requirements are simply too high. It may be an option to supplement your electrical consumption for other smaller loads however.
How can do I make a home made electric generator?
I will like to know how I can make a home made electric generator. I know you can buy them today for cheap but I tought it would be a fun project.
I’m not sure from your question what you want to make, the generator itself or a system that generates power?
The generator itself would be very difficult for home production. Take apart a car alternator or starter motor (which would work as a generator) and see whats involved. Using these same items to generate power from another source such as wind is perfectly reasonable to do with directions how available on the Internet.
Having said that, if you just wanted to make something that worked but wasn’t actually practical, take a look at the link http://www.howard.k12.md.us/res/MakingStuff/motor.html
This would work as an ac generator if the ends of the wire wound on the cork were connected to some type of collector ring and brushes and the needle turned by something
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