Backstepping Approach Based on Direct Power Control of a DFIG in WECS

Abstract

The work presented in this paper aims to highlight new solutions that improve the performance and reliability of wind turbine systems based on a DFIG. Direct power control using hysteresis regulators in power control laws has many disadvantages, for example, variable frequency and ripple in control variable. To overcome these problems, the trend of current research has been carried out in the field of controls of robust nonlinear systems which give acceptable results in large operating domains. We present backstepping using SVM. A comparative study based on the simulation results is presented, thus making it possible to judge the robustness of the control in each case and for the different operating regimes of the DFIG; these results reflect the good performance of this method and which can be improved the system performance.

Enhancing the control of doubly fed induction generators using artificial neural networks in the presence of real wind profiles

“…the generated currents and poor current quality, leading to various faults [20,[28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45]. This not only increases maintenance costs but also poses a risk to the grid.…”

“…It effectively decouples active and reactive power, exhibits prompt response without overshoot, and maintains minimal static error, among other benefits. However, the traditional DPC approach suffers from drawbacks such as a high switching frequency, resulting in significant harmonic distortion in the generated currents and poor current quality, leading to various faults [ 20 , 28 – 45 ]. This not only increases maintenance costs but also poses a risk to the grid.…”

“…As a result, adopting the DPC strategy becomes more costly and requires more experimentation. Another proposed solution includes the use of a backstepping controller to enhance the quality of the output current in DFIG system [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36]. However, the inclusion of a backstepping controller amplifies the complexity and execution challenges associated with Direct Power Control.…”

“…While sliding mode control (SMC) has some advantages such as robustness, simplicity, and fast response, it also comes with disadvantages, including the chattering effect and parameter sensitivity, which can limit the performance and applicability for DFIG control [ 26 , 27 ]. Consequently, modification and improvements of the SMC technique have been proposed in the literature, such as the super-twisting algorithm [ 28 ]. In a different approach the paper in [ 25 ] proposes and tests the nonlinear Backstepping control for wind turbine systems.…”