Technical FAQs 4

What is a variable speed wind generation system?

As compared to the fixed speed wind generation systems, the variable speed wind generation systems produce more power [6,46,47] and provide less stress on the generator shaft, as the shaft speed can vary with the variation of wind speed . The variable speed WECS is also cost effective and provide simple pitch control for the turbine .

How does a constant speed wind turbine work?

A constant speed wind turbine operates at the maximum power point according to the wind conditions to control the active and reactive power of the machine. This is achieved through power electronics for machine control. The turbine may include a synchronous or induction generator.

What is a fixed speed wind turbine?

Frequently used fixed-speed WECS. In this type, the wind turbine can store the varying wind power as rotational energy by controlling the speed of the turbine. Thus, the stress on the mechanical structure is minimized, and the generated power becomes smoother than that in fixed-speed WECS concept.

What type of generator can a variable speed wind turbine use?

Variable speed wind turbine with full-scale frequency converter. It may include a synchronous or induction generator. The machine control is performed with power electronics.

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Fixed-propeller constant-speed wind power generation system

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