Tag: multi rotor

  • Multirotor wind turbine: an update

    Some time ago I wrote a post about the interesting concept of multirotor wind turbines, including the full scale prototype built by Vestas with 4 refurbished V29-225kW (that is, with a 29 meters rotor diameter). It has been installed in a test site of the Technical University near Roskilde, in Denmark – I believe I’ve…

  • Strength in Numbers: the multi rotor, 12 blades turbine concept

    The idea is not new: for instance around 1800 some “twin” mills have been used to pump water in Denmark and there are quite a few similar concepts and international patents dating the first half of 1900 – see for instance the drawing  below. What is interesting here is the size of the company testing…