Vertical Windturbine

Related Links

The VASGO Homepage
The Aufwind Goms Homepage


How This Project Started...

In this page, i describe a project that has been realized by two of the students of the HES-SO Valais. Their names are Franco and Orlando Summermatter, two brothers with mechanical background. They are both enroled to the Institute of system engineering, Orlando is specializing in Power and Control, Franco is specializing in Infotronics. They have competed to the "Aufwind" project, a project with the goal to encourage people to build efficient windturbindes. Ten projects have been elected, among which was also the project of Orlando and Franco. They call their invention the VASGO. Figure 1 shows the windmill built up but with rotors of stage number one still missing and no generator coupled to it.

The VASGO Windturbine picture

Figure 1: The VASGO Windturbine


To the left, you can see Franco and to the rigth, you can see Orlando. In the center of the picture, you see the VASGO.

Technical Stuff

The legs are about 3 meters high. Each stage of the turbine is 1 meter high and has a diameter of 2.5 meters (including the wind guiding blades). The total heigth is 6.7 meters, as the organisators allowed a total higth of 7 meters. Another prescription was that everything moving had to be at a heigth not less than 3 meters. The VASGO has an output power of 2 kW at a windspeed of 14 m/s and 1 kW at a windspeed of 7m/s. The VASGO can withstand windspeeds up to 140 km/h. It has a built-in electromagnetic brake that is rpm-controlled. The turbines do not have aerodynamic profiles but just half-pipes, this makes the engine resistant to high wind-speeds and optimizes its starting behavior at low windspeeds. This also simplifies production. The generator is coupled to the turbine stages by a gear box in order to adapt both systems to each other. Below, you see a small video of the VASGO in action.

Figure 2: The VASGO Windturbine in action

Further steps

It is planned to build a huge axial flux generator that is no more using a gear box. This will further improve over all efficiency and simplify the mechanical coupling of the turbine stages to the genarator. The axial flux genarator is also more adapted to low windspeeds as it produces higher voltages at lower rpms.