Fortsätt till huvudinnehåll

[VAWT] Awarded!

So I wrote applications for a competition for bachelors thesises at Chalmers University of Technology, called Bachelors Challenge.  After passing two steps of selection, we got to present our concept in front of a public audience and a jury consisting of representants from Chalmers and various companies, including the internationally famous Ångpanneföreningen. We competed in the category "Green Initiative and Sustainable Development".

Madeleine, another person from our six person team and I held the presentation. Competition was hard. One of the competitors for instance presented a concept for converting plant matter that is wasted today into useful plastics.

To our help Jens and Madeleine, from our  group consisting of six persons, built a model of the windturbine. As we couldn't find a suitable source of wind we decided to spin the turbine with a DC motor instead. Then we used my previously designed software to make an onscreen live demonstration of the performance, with and without the maximum-power-point tracking algorithm that was designed. Below is a picture from this part of the demonstration.  I'm the guy in the middle. 

Demonstrating the equipment live

We used the exact same electronics that I designed as for the real two meters high turbine. It measures the actual electrical power. It was kind of challenge to get everything finnished for the presentation, as we had to hand in the final report just a few days before the competition. However, with the investment of quiet a lot of hours everything worked out fine. We had just about  a minute to carry out the table with all equipment and get it to work, after the preceding group had done their presentation.

Other keypoints of the demonstration were possible applications, were we proposed the use in development countries. Here, empty kerosene barrels could be turned into savoniusturbines. Instead of using expensive and unhealthy kerosene for illumination as still is a common case, savionusturbines and LED's could be used. Our research and calculations showed that it would be a lot lot cheaper. 

We won a check worth around 2000 euros

Afterward there was a break, and the jury summoned to decide the winner. What a moment when that turned out to be us! The night went on to a delicious three-course dinner.  It was a great project with a great group and I learned a lot. 

After that, I went on an exchange semester abroad and haven't been able to continue on this project. However, the turbine was left logging data on an SD card, and I'll try to mine out some important results when getting home again. 

Kommentarer

Populära inlägg i den här bloggen

The heating system

One of my former projects was the design and practical realization of an automated wood fired heating system. Two key characteristics of the project were the reuse of junkyard bargains and realization of electronic system starting from component level. Budget was kept low. The system is now warming a house situated on a farm on the Swedish countryside.  I for sure have never done a project spanning so many different categories of work. In the end I had done manual metal work and welding, plumbing, electrical installation, creation of control- and calculation algorithms, circuit design and programming to name some. A box on the upper floor of the house with an Atmega328 microprocessor controls the whole heating  system.   Here is a video summary of the project: Systems furnace is a Braland 21 from http://www.braland.se The control system that is now up and running can among other things monitor 16 different temperatures, control all the systems...

[VAWT] Affordable wind measurements

The shop Clas Ohlsson in Sweden sells a spare anemometer for the   WH-1080 weather station  for a hobbyist friendly price around 15 euros. This anemometer can probably be found in other countries too. The WH-1080 spare anemometer Here   you can read about how to use this anemometer together with an Arduino or any other embedded system.  As we couldn't find any data on the characteristics of this sensor, we did our own calibration in a wind tunnel and the results are presented in the report above. This anemometer was used in a Bachelors Thesis project related to the devlopment of optimization of the Savonius Turbine, here tagged [VAWT].

Line follower robot prototype

Before Stockholm Robot Championship 2013 I built a prototype for a line follower robot. The goal was to build something quickly that would be easy to modify, get it to go around the track and then learn as much as possible for a perhaps next version to come. It's the first robot I've built, apart from basic one we built in a project course.  I tried an Olimexino ARM development board for this project. It's basically an Arduino clone but it's physically smaller and lighter than the Arduino Due board, and cheaper, at least on eBay. I had slight problems with the drivers on this board. Here are some info about Olimexino drivers that at least helped me: http://forums.leaflabs.com/topic.php?id=73  However, when considering the "bang for the buck" Olimexino is still an attractive choice when compared to Arduino I think.   I have some stuff laying around in the drawer that I would like to try out on this robot if I choose to continue on it. For instance I w...