Performance Analysis of Doubly Fed Induction Generator Coupled With Wind Turbine

Abstract

Renewable power generation can help countries meet their sustainable development goals through provision of access to clean, secure, reliable and affordable energy. There are many generators available for wind energy. As far as DFIG is concerned, it is very important to make DC-link voltage stable for doubly fed induction generator wind energy conversion system. The advantage of DC-link voltage is that it provides an extra spinning reserve capability for the wind system, which can be used for sink or source of active power. This paper focuses on analysing the performance of wind power in conventional system under various scenarios. Here wind power in a power generation and transmission system alongside the conventional 3-phase sources, is introduced and have simulated its working and performance. While analysing the performance of DFIG it becomes important to explore the effects of DC-link voltage under various cases: (i) effect of load variation on dc link voltage Vdc at fixed speed (ii) effect of load variation on dc link voltage Vdc at variable speed. These cases are compared with fixed and variable DFIG wind energy conversion system. All these systems have been simulated with the help of the inbuilt components provided in SIMULINK library of MATLAB.