Comparative analysis of faults from stall controlled wind turbines with asynchronous generators and pitch controlled wind turbines with synchronous generators
Keywords:
Wind turbine, stall control, pitch control, synchronous and asynchronous generators, failures type, downtime.Abstract
A large number of wind turbines from different manufacturers
have been installed worldwide. They have different operating
principles and are designed according to the climatic conditions
of the installation site. The objective of this study is to perform
a comparative analysis of the behavior of the different types
of internal and external failures, their frequency and their
duration for different types of wind turbines. To accomplish
this, data collected directly from the Supervisory Control
and Data Acquisition (SCADA) system is used to monitor two
wind farms installed in Soria (Spain). The study reveals the
typical faults of each type of wind turbine. Wind turbines with
synchronous generator and pitch control experience more types
of faults; however, the frequency and duration of faults are
greater in wind turbines with stall control and asynchronous
generators.
