Fixed Speed Configurations

From Wind wiki

Wind turbines with fixed-speed configuration use induction generators directly connected to the grid. Because the grid’s frequency is fixed, the speed of the turbine is dependent on the ratio of the gearbox and the number of poles in the generator. Most fixed-speed turbines, in order to increase the production of power, are equipped with a pole change generator which makes it operate at two different speeds. As large current can possibly rush in, a soft starter is utilized to limit the current during the start.

There are several things that one can be satisfied with induction generators. It has a robust design, there’s no need for maintenance, well-enclosed, and produced in large series. And to top it all, it is a reasonably low price and strong enough to withstand overloads. The only problem about it, however, is the uncontrollable and excessive use of power.