A new variae-speed constant-frequency wind electric conversion system

摘要

The variable-speed constant-frequency wind electric conver-sion system can allow the rotational speed of wind turbine to varywith wind speed and operate at a constant and optimal tip speedratio. Therefore, the wind turbine can maintain high power coeffi-cient over wide range of wind speed and the speed regulatingmechanism of wind trubine can be simplified.