LEGO Wind Energy: Green Energy Projects with Mindstorms EV3

© Grady Koch 2019

Grady Koch and Elias KochLEGO Wind Energyhttps://doi.org/10.1007/978-1-4842-4439-5_9

9. A Dual-Rotor Turbine

Grady Koch¹  and Elias Koch²

(1)

Yorktown, VA, USA

(2)

Freiburg im Breisgau, Baden-Württemberg, Germany

 

In this chapter an idea is explored of placing two rotors on a single pillar. In our experiments adding another set of blades to a horizontal-axis turbine, such as that in Figure 5-1, did not improve power output. The extra weight of the second set of blades overcame any added rotation speed. However, adding another generator on the same pillar can provide more power.

Counter-Rotating Blades

Figure 9-1 shows the dual-rotor , dual-generator design. The blades are arranged to counter-rotate to avoid problems in balancing the pillar ...