Direct driven wind energy conversion system connected to load using variable frequency transformer

Abstract

This paper proposes a variable frequency transformer for wind energy conversion systems using permanent magnet synchronous generator. It is a doubled-fed wound round induction machine which transfers the power between asynchronous networks. Typical permanent magnet synchronous generator-based wind energy conversion systems with back-to-back converters produces harmonics which creates power quality problems.The above problem can be overcome using the variable frequency transformer between permanent magnet synchronous generator and load. This design does not employ any power electronic converter for wind energy conversion system and harmonics can be diminished using the variable frequency transformer. In this paper, the PMSG is connected through variable frequency transformer for different wind speeds. The results are endorsed using MATLAB/SIMULINK.