A Review on Position Sensorless Methods for Wind Generators

Abstract

Wind energy is recognized to be one of the most efficient and effective ways of providing sustainable energy source. Developments in the wind energy area and its lower cost in comparison to other renewable energy sources lead to the fast expansion of wind turbines all over the world. However, there are some concerns about the performance of the off-shore wind turbines where maintenance is too costly. Recently, many research papers come with the ideas how it is possible to eliminate unnecessary parts to reduce the fault probability. Motion sensor is considered to be most attractive part. This paper aims to provide an overview of sensorless control techniques which are used in wind turbines. The performance of each method, advantages and disadvantages and a brief explanation of methods have been discussed.