China has been running most of the wind farm wind power generator unit is asynchronous.

The main characteristics of simple structure, reliable operation at low prices. This generator set for the fixed-speed constant-frequency unit, the operation is essentially the same speed, wind generators run on wind energy conversion under the best chance of a relatively small power-generating capacity and thus lower than the new unit. To run from the power system needs to absorb reactive power. To meet the power of the wind farm power factor requirements, multi-use parallel compensation capacitors in the machine-side approach, the compensation strategy is asynchronous generator with a capacity of several groups of a fixed capacitor.

As the wind speed in size with climatic and environmental change, driving the wind turbine generator is not always possible to run at rated wind speed, in order to take full advantage of the low wind speed when the wind, increase in the annual generating capacity, widely used in recent years, two-speed asynchronous generator. This two-speed asynchronous generator can change the number of pole pairs, with large and small motor two kinds of operating mode.

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