Why is a 13 m/s wind turbine so low?

A unique feature of this turbine is a very low cut-out speed of 13 m/s. The reasoning behind this is twofold; (1) not to contribute to excess wind production at high wind speeds and (2) reduce load and thus cost of the turbine by avoiding operation at high wind speeds.

What is the cut-in wind speed?

The conventional cut-in wind speed is 3.5 m/s. These differences are well known anecdotally to manufacturers, installers and owners of small turbines and it is surprising that they have attracted so little academic attention. 13.1. ( a) Low speed behaviour of a three-bladed 500 W turbine, taken from Wright (2005).

How fast can a wind turbine run?

The probability of wind speed between 4 and 20 m/s for this site is quite high, as this is the typical operating range of the most of wind turbines analyzed. The turbines considered in the study have a cut in wind speed of 3.5–4.5 m/s and a nominal speed of 10.5–15 m/s.

What is low wind performance?

Low wind performance is usually discussed in terms of the cut-in speed, defined in the International Electrotechnical Commission (IEC) standards for large and small turbines as ‘the lowest mean wind speed at which the turbine produces power’ as determined by 10-minute averages of wind speed and power output, IEC (2006).

What are the advantages and disadvantages of a wind turbine?

While the main advantage of such technology is that it generates significant amounts of electricity at low wind speeds, it comes at a cost. In order to extract more power from lower wind speeds, the rotor of the turbine needs to increase in size while keeping the rated power constant.

Can a wind turbine extract power at low wind speeds?

Introduction It is important to state immediately that there is no magic solution to the problem of extracting significant power at low wind speeds from wind turbines; the wind speed sets the upper limit on that power. In other words, the Betz limit for conventional turbines applies equally at 5 m/s as at 25 m/s.