There are very few applications of DC wind turbines. The most common models are constant-speed and constant-frequency squirrel-cage induction generators, variable-speed and constant-frequency doubly-fed induction generators, and variable-speed and variable-frequency direct-drive permanent magnet synchronous generators. 1. Constant speed and constant frequency squirrel cage induction generator Constant-speed constant frequency (CSCF) wind turbine is a generator that […]