A Comparative Performance Analysis and Flicker Assessment of SCIG and DFIG-Based Wind Turbines

Document Type : Original Article

Authors

1 Electrical Power, and Machines Department, Faculty of Industrial Education, Suez University, Suez, Egypt

2 1Electrical Power, and Machines Department, Faculty of Industrial Education, Suez University, Suez

3 Department of Electrical Engineering Faculty of Engineering, Tanta University, Tanta, Egypt

Abstract

This paper presents a comparative performance analysis of squirrel cage induction generator (SCIG) and doubly fed
induction generator (DFIG) systems driven by wind turbines under different operating conditions. Also, the constant
and variable-speed configurations are compared regarding short-term flicker severity, Pst. The constant speed
configurations are based on SCIG in addition to SCIG equipped with static synchronous compensator (STATCOM)
with the same generation capacity. In this paper, comprehensive models of wind turbine are used to analyze power and
voltage fluctuations. The short-time flicker index is used to assess the emitted voltage fluctuation. The effects of grid
short circuit capacity and impedance angle on flicker emission are investigated. The influences of site mean-wind-speed
and turbulence intensity on voltage fluctuation are also examined. A flickermeter model is implemented according to
the guidelines provided by IEC 61000-4-15 to evaluate the severity of voltage fluctuation emission. The models of
different system components along with their control schemes are simulated using Matlab/Simulink® package

Keywords

Port-Said Engineering Research Journal
Volume 19, Issue 2
September 2015
Pages 76-86

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