This paper proposes a control methodology for compensation of grid voltage unbalances using a new scheme of doubly fed induction generator (DFIG) based on a series grid side converter (SGSC), the seriesDFIG scheme. In such DFIG scheme, the grid side converter (GSC), which is usually connected in parallel to the machine stator, is replaced by the SGSC, connected in series with the machine stator...

The present paper formulates the state space modeling of doubly fed induction generator (DFIG) based wind turbine system for the purpose of the stability analysis. The objective of this study is to discuss the various modes of operation of the DFIG system under different operating conditions such as voltage sags with reference to variable wind speed and grid connection. The proposed control met...

Wind shear and tower shadow are the sources of power fluctuation of grid connected wind turbines during continuous operation. This paper presents a simulation model of a MW-level doubly fed induction generator (DFIG) based variable speed wind turbine with a partial-scale back-to-back power converter in Simulink. A simple and effective method of wind power fluctuations mitigation by active curre...

In this paper a novel DPC strategy for Doubly-Fed Induction Generation (DFIG) based wind energy generation system with Indirect Matrix Converter (IMC) is proposed. The DPC with IMC deals with several main characteristics which makes it very suitable for DFIG. By suitably selecting switching pattern, the strategy is able to improve the steady state and transient response behaviors of the machine...

This paper studies a control strategy to improve low voltage ride through (LVRT) capability of doubly fed induction generator (DFIG)-based wind turbine (WT). This solution is based on the DFIG with Crowbar circuit control and the installation of STATCOM which is connected at the point of common coupling (PCC). The simulation model of WTs with STATCOM is built using the environment MATLAB/Simuli...

Wind turbines are being built at power levels above 1.5 MW. Higher power levels are being anticipated for off-shore applications. To limit mechanical stresses and power surges in these high power systems speed control is necessary. The doubly-fed induction generator (DFIG) system is investigated as a viable alternative to adjust speed over a wide range while keeping cost of the power converters...

Abstract The Superconducting Magnetic Energy Storage (SMES) device is gaining significance in utility applications, as it can handle high power values with a fast rate of exchanging energy at efficiency. large-scale invasion renewable systems into grid give rise to many integration issues. This SMES these issues due its various features. In this study the role tackling stability presence wind g...

Doubly fed induction generator (DFIG) system suffers from complex control structure, slow dynamic response speed and cumbersome parameter design due to its traditional cascaded dual-loop strategy. A single-loop finite set model predictive (SLMPC) is proposed in the paper for DC-based DFIG DC grid, which simplifies structure design, enhances response. There are three improved aspects. First, eli...

The main advantage of using the Doubly-fed Induction Generator - DFIG, in wind power generation systems with variable speed, is that electronics used correspond only to a fraction generator’s nominal power, considering slip it processed by static converter connected rotor circuit. This paper covers details from steps mathematical modeling converters and design controllers, characterization prot...

Crowbar protection and chopper (CCP) are commonly used hardware measures in the process of low voltage ride through (LVRT) doubly-fed induction generator (DFIG). The protections operating states during fault have an important influence on electromagnetic transient (EMT) DFIG. Therefore, different from only considering single protection, coordinated control crowbar further considered this paper,...