During the last two decades, the production of
wind turbines has grown in size from 20 KW to 5 MW.
There currently exist various competing technologies for
wind generator systems whose differences lie in the
complexity, cost and degree of control over the system
characteristics. In the wind energy conservation system,
the wind turbine captures the wind energy. Then the
generator changes it to the electrical power. Wind
turbines are classified into two types as fixed speed wind
turbine and variable speed wind turbine. Variable speed
wind turbines yield more energy than the fixed speed
wind turbines, reduce power fluctuations and improve
reactive power supply. Basically direct drive Permanent
Magnet Synchronous Generator (PMSG) and Double Fed
Induction Generator (DFIG) are used in variable speed
wind turbine generator. In this paper, the simulations of a
variable-speed wind turbine with a permanent magnet
synchronous generator and power electronics devices
have been analyzed to performance during various input
wind velocities.
International Journal of Recent Research and Review, Vol. VII, Issue 2, June 2014.

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