Event analysis and real‐time validation of doubly fed induction generator‐based wind energy system with grid reactive power exchange under sub‐synchronous and super‐synchronous modes

Abstract

Abstract The insertion of renewable power generators into the power system network has been promoted by the environment protection aspects. Doubly fed induction generator (DFIG)‐based wind energy system is one of the most viable technologies for sustained power generation. This paper focuses on the operational analysis of DFIG‐based wind energy conversion systems (WECS) with real‐time experimental validation. An event analysis is executed under sub‐synchronous and super‐synchronous speeds with the variation in wind velocity and reactive power exchange by controlling the rotor side converter and grid side converter under MATLAB/Simulink platform. The results of the analysis with reactive power exchange can be utilized for the enhanced control of power electronic converters of DFIG‐based WECS for better support to the grid. The validation of results is accomplished by emulation of 2 MW DFIG‐based three blade wind turbine system in the laboratory under a real‐time hardware‐in‐the‐loop platform.

Keywords

• doubly fed induction generator
• hardware‐in‐the‐loop
• renewable energy sources
• renewable power generators
• wind energy conversion systems