#vawt

The wind was variable, but we had a gust here and there. The VAWT was able to turn but did not perform as hoped. I think the pivot point was to far from the center of pressure, it wasn't balanced carefully, and one pivot seemed to hang up. So I suppose I'll have to make another only put a little more care into the construction.

2 years, 7 months ago

Details from the construction of a small Sharp style vertical axis wind turbine. There is a little video of it trying to spin, but the wind was so light and variable it really didn't get going. I was happy it turned at all considering the size of the wings compared to the diameter.

2 years, 7 months ago

Going over a spreadsheet for calculations in a Sharp style passive pitch control vertical axis wind turbine.

2 years, 8 months ago

An overview of the theory behind a computational model of passive pitch control on a vertical axis wind turbine. This is primarily for future reference.

2 years, 8 months ago

A brief look at a small Savonius vertical axis wind turbine made from Coroplast material and attached to a generator described in previous videos. No data is presented as we had no wind to speak of for over a week and I wanted to move on to another turbine idea.

3 years ago

I tried making a wind turbine to go with a small DC motor. My 3D printer is small so I'm limited to parts that are about 4" in diameter. A Savonius rotor of that size was not enough to overcome the drag from the motor. So I tried making an experimental VAWT. The connection between that VAWT and the motor was too weak, but when placed on a simple dowel axle, it would spin well in a good breeze.

3 years ago

A few photos and video of the ArborWind VAWT before it is taken down.

3 years, 2 months ago

The 0.35 m^2 vertical axis wind turbine was placed on top of a pole in a windier location for life testing to see how it holds up in the weather. There is no battery attached to it; just the lighting circuit. I was installed in early May, 2013.

3 years, 3 months ago

Details on how I made the blades for the 0.35 m^2 vertical axis wind turbine.

3 years, 3 months ago

A demonstration of the light for the 0.35 m^2 vertical axis wind turbine.

3 years, 3 months ago

A look at the wiring for the lighting application.

3 years, 3 months ago

Repurposing the controller board for a lighting application. The 0.35 m^2 vertical axis wind turbine is being prepped for a life test. And rather than charge a battery, the power will be used immediately by a light bulb.

3 years, 3 months ago

The wind was stronger giving me a chance to test the Overspeed circuit trigger.

3 years, 3 months ago

A test to see if the overspeed protection part of the controller can stop the 0.35 m^2 vertical axis wind turbine. The wind was not quite strong enough to test the trigger for the SCR, so it was triggered manually.

3 years, 3 months ago

An early load controller for the 0.35 m^2 vertical axis wind turbine. This one measures the input voltage, estimates the current that should be coming from the turbine for optimal power, and adjusts current to the buck controller feedback circuit to either call for more or less current. This is not maximum power point tracking; in controls parlance, it is a feedforward approach.

3 years, 3 months ago

A brief look at the completed PMA rotor assembly for the 0.35 m^2 vertical axis wind turbine.

3 years, 3 months ago

A load controller is needed for the 0.35 m^2 vertical axis wind turbine. The device is intended to make sure the load on the turbine matches to some extent the power available to prevent the turbine from rotating too slowly and going out of lift mode. This is an experimental current controller to take a PWM signal and control the current going to a battery.

3 years, 3 months ago

Assembly of the turbine for the 0.35 m^2 vertical axis wind turbine.

3 years, 3 months ago

The permanent magnet alternator rotor assembly for a 0.35 m^2 vertical axis wind turbine.

3 years, 3 months ago

Completion of a mold for the rotor for a vertical axis wind turbine.

3 years, 3 months ago

I wanted to make multiple copies of the rotor. I decided to make a mould and cast copies of the rotor.

3 years, 3 months ago

Details about making the stator for a 0.35 m^2 vertical axis wind turbine.

3 years, 3 months ago

This project is a more systematic attempt to make a decent small vertical axis wind turbine. The "035" refers to the frontal area of the turbine being 0.35 m^2.
This video is an overview of the design.

3 years, 3 months ago

Watching the LED vertical axis wind turbine, it looked like a firefly as the light would go on and off depending on puffs of wind.

3 years, 3 months ago

A video taken in the process of building a vertical axis wind turbine that would use the energy produced to light an LED. There would be no storage; energy would be consumed immediately.

3 years, 3 months ago

After deciding that lift VAWTs are nice because they spin fast. And four blades results in weak wings while two blades have a harder time starting and have vibration issues. I decided to give the more conventional three blade design another go to get better performance than my earlier attempts. I was quite happy with this design.

3 years, 3 months ago

The two bladed vertical axis wind turbine failed. Here is a look at what happened.

3 years, 3 months ago

The two bladed vertical axis wind turbine on a windier day.

3 years, 3 months ago

Tests of a two blade vertical axis wind turbine. The four blade approach resulted in smaller, narrower wings which were not very stiff. This is a test to see if two stout blades is a better approach.

3 years, 3 months ago

The 4 bladed Darrieus in heavier air.

3 years, 3 months ago

A Darrieus type with 4 blades.

3 years, 3 months ago

Documentation of the stator assembly for a small experimental vertical axis wind turbine.

3 years, 3 months ago

A small vertical axis wind turbine for use in experiments. This video documents the construction of the rotor.

3 years, 3 months ago

Results from tests with the Lenz2 blades on the small vertical axis wind turbine.

3 years, 3 months ago

A quick look at the Lenz2 blades in action on the small experimental vertical axis wind turbine.

3 years, 3 months ago

Final assembly and a run of a small experimental vertical axis wind turbine. Spoiler: this one didn't do well. Something was wrong with my setup.

3 years, 3 months ago

Making the first set of blades for the experimental vertical axis wind turbine.

3 years, 3 months ago

Putting the parts together for a small experimental vertical axis wind turbine.

3 years, 3 months ago

Construction of the rotor for the foam vertical axis wind turbine.

3 years, 3 months ago

Improvements to the foam vertical axis wind turbine.

3 years, 3 months ago

Construction of the turbine for the foam vertical axis wind turbine.

3 years, 3 months ago

Measured performance of the foam vertical axis wind turbine.

3 years, 3 months ago

Construction of the stator for the foam vertical axis wind turbine.

3 years, 3 months ago

I put a small generator on a three bladed whirligig and tested it in heavier wind. It spun up to around 800 RPM before failure of a wing.

3 years, 3 months ago

An early experiment in using airfoils for a vertical axis wind turbine as opposed to mostly drag type blades. There is no generator on this one, so I called it a whirligig.

3 years, 3 months ago

Two bladed vertical axis wind turbines are notorious for having starting issues. So here is a trial version of a three bladed VAWT. No generator on this one.

3 years, 3 months ago

The small VAWT mounted to a pole and spinning in a light breeze.

3 years, 3 months ago

A quick test of the small VAWT designed for the five Watts for twenty-five dollars challenge. The project was dropped as magnet prices skyrocketed to about three times the price they were at the start of the project.

3 years, 3 months ago

An experimental vertical axis wind turbine with a combination of a Lenz2 turbine and lift style blades.

3 years, 3 months ago

The tether broke on the wind turbine so it was free to spin in heavier air. It did okay, but the pole needs to be beefier and some balancing would be helpful.

3 years, 3 months ago

A measurement of the tip speed ratio (TSR) for Steves elliptical blade.

3 years, 3 months ago

A comparison of Steves elliptical blade with an anemometer and a Savonius in a light breeze.

3 years, 3 months ago

The aluminum vertical axis wind turbine in the winter.

3 years, 3 months ago

The ceiling fan generator or a vertical axis wind turbine was modified with permanent magnets.

3 years, 3 months ago

The turbine spinning on a windy day.

3 years, 3 months ago

Looking at the current coming from the aluminum Savonius style vertical axis wind turbine.

3 years, 3 months ago

Assembly details for the turbine of an aluminum Savonius style vertical axis wind turbine.

3 years, 3 months ago

My second attempt at a vertical axis wind turbine; a Savonius type. Video is from early April, 2009.

3 years, 3 months ago

Results from my first attempt at making a vertical axis wind turbine. Video is from around 2009.

3 years, 3 months ago

My first attempt at building a vertical axis wind turbine from about 2009.

3 years, 3 months ago