Abstract

Darrieus type wind turbine has high turbine efficiency and small starting torque, so it is requiring strong wind speed to start rotating. This paper presents new starting assist method of Darrieus turbine using movable aileron. To confirm an effect of the aileron, the paper conducted wind tunnel experimental tests about characteristics of starting torque, starting wind speed and load torque. Tested turbine is four-blade and the ailerons tested were a fixed-angle aileron and three configurations of movable ailerons. The movable ailerons are increased starting torque, and the wind speed for start-up is reduced. When using a movable aileron the load torque at low rotational speed region is increased. Furthermore, the load torque of the turbine with AR-type movable aileron is roughly equal to the turbine of bare blade (without aileron) at high rotational speed region.

Keywords:
renewable energy, startup, h-type blade, four-blade turbine, bare blade, wind tunnel, r-type blade, wind turbine, rotational speed, load characteristic
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2014. International Society of Offshore and Polar Engineers
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