SYSTEM FOR PITCH ANGLE CONTROL OF WIND TURBINE

摘要

PURPOSE: A pitch angle control system for a wind turbine is provided to continuously manage the voltage and frequency of a system connection point by detecting the voltage and frequency and controlling the pitch value of an aerogenerator. CONSTITUTION: A pitch angle control system for a wind turbine comprises a generator comparison unit, a reference pitch value computing unit(12), multiple pitch control units(10), and a compensation pitch value computing unit(30). The generator comparison unit produces error signals based on the difference of the generator measurement signals and generator reference signals according to the operation of the wind power generation system. The reference pitch value computing unit produces a standard pitch value by using error signals. The multiple pitch control units comprise a pitch servo unit.