• Fully functional Savonius wind turbine producing approximately 3.0V/50mA at wind speeds of 12 mph
• Completely hands on experience teaching every fundamental aspect of how electricity is harnessed from wind power
• Standardized parts allowing for windmill customization
• Comes with a build it yourself rectifier to convert electricity from AC to DC
• Designed to be used by children 10 plus, but mastered by college level students

PicoTurbine’s Savonius Windmill Kit is a fully function miniature vertical windmill. At wind speeds of 12 mph it produces approximately 3.0V/50mA. The frame is built from high quality craft wood and coated with premium enamel to help protect it from the elements. The kit comes with 4 ceramic grade-five magnets and 4 (220)-turn copper coils. This hobbyist’s kit walks users through every aspect of capturing and converting wind power into electricity.

Users will learn how to make S-foil wind blades that can (unlike horizontal wind blades) capture energy from any wind direction. They will then build step by step an alternator that will use magnetic induction to produce electrical current. The rotor distance is adjustable to the coil array allowing users to witness magnetic strength principles. The wind turbine produces alternating current that can be displayed when connected to the bi-color LED. This special LED emits alternating red and green light when voltage switches from positive to

Price: $ 59.95

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Savonius Model Wind Turbine Plus is a post from: Renewable Energy

7 Types of Vertical Axis Wind Turbine – Benefits Available!

You may already be familiar with wind turbines, but did you that are actually two types: Vertical and Horizontal. They each perform differnt functions, and both have their advantages and disadvantages. To decide which one is the best for you, look at your needs. Both share the same common factor as they produce energy by using the wind, except that they do it differently. The main rotor shaft in a Vertical Axis Turbine runs vertically rather than horizontally, hence the name. There are of course advantages and disadvantages for it being in this direction. One of the best advantages is that the gearbox can be placed at the bottom of the turbine, which is not possible in a horizontal turbine, so the top of the tower does not carry all the weight.

Another advantage of Vertical Axis Wind Turbines is that it does not have to face in the wind’s direction. The disadvantage is that it produces smaller amounts of energy than a horizontal turbine, and if the turbine is running in the same direction that the wind is blowing you can get pulsating torques through each turn of the turbine.

Types of Vertical Axis Wind Turbines

1. The newest type of turbine out at the moment is a windmill which has a rotation sail. When it is in operation the sails look like those you find on a ship, that expand or contract according to the change of winds. Each has three sails where the speed is controlled by a magnetic counter which expands or contracts the sails as needed. To minimise the damage to the sails there is a control unit for this purpose. The sails can tear during a large storm but the frame is very durable.

2. There are aerodynamic turbines with blades just like a plane made of airfoil base in order to capture the wind’s energy. They are so designed to catch this artificial current of kinetic energy to the centre. A very effective wind turbine it runs at full capacity most of the time to utilise all the wind energy by redirecting and lifting it upwards to the turbines there. It not only responds to the wind but also free flowing water systems such as creeks, rivers, streams and oceans.

3. Darrieus Wind Turbines are known to be efficient but they are big machines for their shape and size. Because a lot of cyclic stress that is put on the tower it does tend to wear out sooner. It consists of three blades which are shaped like loops which connect to the top and bottom of the axle, and often called the “eggbeater windmill” because that is what it resembles. They are connected from the ground upwards by large external structures which hold it up.

4. The Giromill consists of three vertical blades and was based on the patent of the Darrieus design. It is very low on maintenance as it self starting. The blades of strong, light material which are more robust to cope with the stresses placed upon them. They require less blade speed to channel energy with each turn of the blades as they are very high performing.

5. Savonius Wind Turbine mills usually consist of two scoops which convert windpower into torque on a rotating shaft. There also some which are self starting and feature three scoops. They are quite similar looking to helicopter blades except they are bent in a certain style and shape to provide enough energy to be of use.

6. The blades of Windstar Turbines are straight and made of aluminium. They are attached to either end of a central rotating shaft. There are a number of rotors with their own unique dual braking system of pneumatic disc brakes and blade pitch. Windstar Turbines were designed for locations with stronger winds.

7. Vertical Axis Wind Turbines have many advantages as the running costs are low and they are easier to maintain. They can almost withstand any type of low or high wind. They are smaller which means they can be transported easier. The disadvantages are that producing efficient energy from winds takes twice as much time. The turbines have to be installed on flat land and some models require guide wires, which adds more stress to the bottom of the tower; and they have a low starting torque. A consumer has to look at a design that is suitable for them by deciding on the best one for their needs.

7 Types of Vertical Axis Wind Turbine – Benefits Available! is a post from: Renewable Energy

• High Availability: Constantly produces power from 5.6mph up to more than 95 mph
• Performance: Highly efficient aerodynamic blades and system design guarantee superior performance.
• Hybrid system: The charge controller can incorporate 600W wind and 250W solar power together to simultaneously charge the same bank of batteries
• Load control: The controller has over-charge protection, short-circuit protection, and automatic dump-load function. These are highly efficient systems that will reliably produce maintenance free energy for over 15 years
• Built in “ON/OFF Switch” for easy wind turbine operation

WIND TURBINE GENERATOR – Include tail. Our efficient generators are built using high-performance rare earth neodymium permanent magnets, so the alternator is compact and light weight. Our generator housing is precision-cast aluminum built to withstand severe climates, sand and salt corrosion. Light and durable, the way you want your maintenence-free system.
3 MOLDED LIGHT WEIGHT BLADES FULLY BALANCED – these blades are aerodynamically optimized and injection molded with the latest thermoplastic technology. They are whisper quiet and vibration-free. The HUB and nose cone are included.
SOLAR/WIND HYBRID CHARGE CONTROLLER – This controller performs the 3 roles: AC-to-DC rectifier, battery charge controller and load controller for both the wind and/or solar power.
LOAD BANK BOX – This is a separate box contains the dump load to act as the outlet of the excessive energy in the high wind situations. This new design separated the controller and the load so the heat from the load will no

Price: $ 799.99

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PowerMax+ 600 Watt 24 Volt Hybrid Wind Turbine Generator Review is a post from: Renewable Energy

Just launched! Watch our stunning new time-lapse video of the construction of 3 wind turbines at Bristol Port. The turbines will produce over 15 million units of new green electricity annually, enough to save around 13000 tonnes of carbon emissions every year for the next 30 years! www.ecotricity.co.uk
Video Rating: 4 / 5

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Ecotricity – Bristol Port – Wind Turbine Construction Video is a post from: Renewable Energy

• 14″ blk int brc turbine
• 14″ superior internally braced wind turbine attic exhaust vent
• Aluminum construction
• Premium grade upper and lower stainless steel ball bearings with integrated molded shield to protect
• Dual ball bearings – adjusts to 12/12 pitch

14′ superior internally braced wind turbine attic exhaust vent. Aluminum construction. Premium grade upper and lower stainless steel ball bearings with integrated molded shield to protect bearing raceway. Dual ball bearings adjusts to 12 12 pitch. Premium bracing system engineered for high wind resistance. Tested to ensure durability and performance in extreme temperatures and high winds. This exhaust vent requires adequate soffit intake vents. Includes: Base and riser. Lifetime limited warranty. No. CX14IBALBLK: Black No. CX14IBALBRN: Brown

Rating: (out of 1 reviews)

List Price: $ 42.99

Price: $ 38.32

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Ventamatic CX14IBALBLK Superior Internally Braced Aluminum Wind Turbine Review is a post from: Renewable Energy

Making A Home Wind Turbine

When one thinks of a home wind turbine, what most probably comes to mind is a gigantic tower with jumbo-jet sized spinning blades. But, with everyone becoming more aware of conserving energy, the technology has advanced so much that it is now possible to have your own small-scale wind turbine at home. Even better is the opportunity for us to make our own, without having to rely on the professionals.

So, how does a home wind turbine make power?

A home wind turbine makes power by spinning a generator. The generator is attached to the rotor, made up of three aerodynamic blades, that is then attached to a tower. To keep the turbine facing the wind, the rotor has a tail, that acts as a weather vain.

The generator is basically an electric motor. As the coils in the motor spin past the magnets, an electric current is produced. The power produced is stored in batteries, which are connected to an inverter to change the direct current to alternating current, which can then be used to power your home. The advancement of motor efficiency, is the reason wind turbines have become so popular for home use.

Depending on your area’s wind conditions, the tower can vary in length. If you live near the sea where it is windy, the tower can be shorter, but in low-wind areas the tower needs to be taller to catch as much wind possible.

Over time the blades have improved drastically as researchers developed lighter, stronger, more efficient blades, with the capability of turning even in the lightest breeze. Back in the day, wind turbines had five blades, and looked similar to windmill water pumps, but recently they have moved to three blades, taking the form of over-sized airplane rotors. Like the tower, the blades vary in size, according to your wind conditions and energy requirements.

While so far we have been explaining the typical horizontal axis wind turbine, there is another design that is starting to gain popularity for small-scale projects. It is the vertical axis wind turbine or VAWT. Very different to the standard horizontal axis turbine, the VAWT spins on a vertical axis, and almost looks like a waterwheel put on its side. Since the VAWT tends to operate low to ground, it needs far more wind to make it turn efficiently, so it is not the ideal option for homeowners or small businesses. The VAWT has also been accused by ecologists of interrupting and harming various migratory birds, making it less attractive for green enthusiasts.

Before going out and installing a wind turbine, it is best to ask yourself the following questions:

- How big is the property?

Wind turbines generally operate better in large areas that cover an acre. This is because wind flow is not deflected by any nearby buildings.

- What is the average wind speed?

The recommended wind speed should be at least eleven miles per hour, but if that isn’t the case then you may have to use a taller tower and larger blades to catch higher altitude winds.

- What else can I use the wind turbine for?

If you could use the turbine for other purposes, such as pumping in water from outside, then it may be useful than you think. This is the reason you see so many windmills scattered over farms – they help pump water from reservoirs to the farmhouse.

- Does my house need a constant power supply?

This is why so many people want to get a small wind turbine in the first place – to keep the house powered during blackouts, and prevent economic losses. Although the wind turbine may not power the house all the time, it’s stored power can be used in emergencies, when the utilities are just not enough.

Answering these questions will give you a good idea of how much power you need, how big the tower a blades need to be, and how much it would be worth investing to start making your own power at home.

The great thing about technology is that it is always improving. So much so that motors have become smaller, efficient and cheap enough for us to attach a few small turbines right on the roof, and produce the same power as a larger turbine on a tall tower.

Although professional home wind turbines can run into several thousands of dollars, it is possible to make your own for a tenth of the price, with components found at home and your local hardware store. Furthermore, the U.S. offers both state and federal tax credits that you can use to offset the installation cost. So not only will you reduce your electricity bill, but also your tax at the same time.

Related Wind Turbine Articles

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Making A Home Wind Turbine is a post from: Renewable Energy

• 10.6 Foot (126″) diameter High Efficiency Fiberglass Blades
• 25 Strong Neodymium Magnets with Durable 4 Layer Coating
• 11 LBS Essex Magnet Wire with High Temp Rating
• Steel Hub and Nose Cone
• 210 amp bridge rectifier to convert 3-phase AC to DC

10.6 Foot DIY Wind Turbine Package for DIY Wind Turbine Plan – 1000 to 1500w

The package includes:

One set of 3 High Efficiency Reinforced Fiber Glass Wind Turbine Blades – 10.6 Feet diameter

Wind Turbine Hub. Nose Cone

25 super strong Epoxy+Nickel + Copper+Nickel quadruple layer coated NdFeB Neodymium magnets – Grade N42, stronger and better performance than N40, N38 and N35

11 LB Magnet wire – Original Factory Spool, genuine Essex enameled magnet wire with heavy build

Available magnet wire size in AWG for this package:

13, 14, 15, 16, 17, 18, 20, 21, 22, 24

Please read Hugh Piggott’s “How to build wind turbine” book to find out the magnet wire size you need.

Heavy duty 210 amp capacity bridge rectifier to convert 3-phase AC to DC

AC connector pigtail for connection to generator

Crimp-on wire splice connectors

10-12 AWG crimp-on ring terminals

8-10 AWG crimp-on ring terminals.

Magnet Technical Specifications:

Super strong and durable magnets:

2″ x 1″ x 0.5″ Thick N

Price: $ 499.00

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Wind Turbine Generator DIY Starter Kit with 126″ Dia Blades, 25 Neo Magnets, Rectifier Review is a post from: Renewable Energy

• Innovative 5-blade design to maximize energy output at low wind conditions under 25 mph.
• 60% MORE energy output at LOW wind than 3-blade turbine
• Reliable two-moving-part matainenance free design, Nearly silent operation
• Controller Electric speed limitation, blade over-speed braking
• Strong Neodymium magnet PMA, Nylon fiber composite blades

Advantages of 5-blade wind turbines over 3-blade wind turbines
1) 5-blade wind turbines will greatly improve annual energy production in low wind conditions. For areas with average wind speeds of 11 MPH (5m/s). If you compare annual energy output to conventional 3-blade wind turbine, there is an increase of annual energy output of more than 60%.

2) 5-blade wind turbines will dramatically improve the reliability and safety in high speed wind conditions. The blade rotation speed of a 5-blade turbine is 60% of the rotational speed for a 3-blade wind turbine. 5-blade wind turbines will greatly reduce chance of overspeed control malfunction. This will ensure operational reliability from a long term perspective.

3) The lower blade rotation speed of 5-blade wind turbine will lower wind turbine noise and make 5-blade wind turbines more community friendly than 3-blade wind turbines.

Nylon-Fiber Glass High Efficiency blades is aerodynamically designed to regulate themselves, slowing automatic

Rating: (out of 1 reviews)

Price: $ 599.00

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Home Wind Turbine Generator 5-Blade 500W Max/12V – Low Wind Model Review is a post from: Renewable Energy

WindEnergy7.com – Want Home Wind Turbines? Home wind turbines are our specialty. Buy a home wind turbine kit from our site. Fill out our contact form and I can connect you with the home wind turbine dealer for your area. There are still areas open for new dealers to become the local source…
Video Rating: 4 / 5

New wind turbine design. Nine News 27th June 2007. Australia, Perth WA.
Video Rating: 4 / 5

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Residential Home Wind Turbine is a post from: Renewable Energy

• CE/ISO certified, efficient. Low start up wind speed at 4.47mph
• Low cost proven systems deployed worldwide with good performance track records.
• mechanical furling overspeed control, hybrid wind/solar controller
• Includes generator, 3 blades/hub, tail, controller, generator-controller 50 foot cable, nose cone.

2KW system is a low Torque, low wind system, rated 2000w at 20 mph, startup wind speed is 4.47 mph.

Wind/Solar Hybrid Charge Controller is included to convert AC to DC. Charge controller can handle 2000w wind load and 600w solar load. Hybrid inverter also has built-in dump load function.

Hybrid controller has LCD display to show the charging current and battery voltage.

Tower, Battery and inverter are not included, you can purchase tower, batteries and inverters separately.

Inverter recommendations: We recommend UL listed inverters made by Xantrex or Outback.

Please contact us for inverters, tower, Batteries.

Note: This wind turbine is not recommended for higher than 30 mph wind speed, please use our HYenergy 2kw wind turbines for higher wind speed. Professional installation required.

No warranty for self-installation.

Technical Specifications:

Voltage: DC 48v
Alternator: Direct drive, 3-Phase AC permanent magnet PMA

Rated Power Output: 2000 watts

Rated Speed: 400 RPM

R

Rating: (out of 2 reviews)

List Price: $ 1,899.00

Price: $ 1,899.00

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Home Wind Turbine 2kw/48V – wind generator for home use Review is a post from: Renewable Energy