BLADE PITCH ANGLE CONTROL FOR A WIND TURBINE GENERATOR

摘要

This generator memory (15) stores generator power handling capability as a function of both load power factor (P.F.) and ambient temperature. Given TAMB input signals for a given altitude, the generator memory understands that the generator power handling capacity increases with increasing P.F. and decreasing ambient temperature. The power factor and temperature signals are provided by suitable transducers as a thermocouple (27) and power factor meter (28), and input to memory (15) through lines (20,35), respectively. The blade memory (20) provides a signal indicative of blade power handling capacity as a function of an average wind velocity signal obtained from a transducer (37) and provides input to the memory.