A New Robust H∞ Control Power

Abstract

Attention has been paid by many researchers to address the various challenges of grid connection of DFIG-based Wind Energy Conversion Systems (WECS). This chapter focuses on the design of a robust H8 controller for the power flow between the stator of the Doubly-Fed Induction Generator (DFIG) and the grid. The robust H8 controller design is formulated as a mixed-sensitivity problem. A mathematical model of the DFIG written in an appropriate d-q reference frame is established to carry out simulations. The proposed power control scheme is elaborated and compared with a conventional Proportional-Integral (PI) controller based on vector control technique. The results show interesting performance of the controlled system in terms of the power reference tracking (the active and reactive power) and robustness against parameter variations compared with the conventional PI controller.

Robust Sliding Mode H∞ Controller of DFIG Based on Variable Speed Wind Energy Conversion System

“…4 explains the SM-H∞ control structure. Robust H∞ control issue has been examined widely in recent years [32,33]. It is an important solution for system disturbances and uncertainties [34].…”

An Efficient Active and Reactive Power Control of DFIG for a Wind Power Generator

“…In order to regulate the power of the DFIG based wind turbine system, the vector control strategy is used. It consists of using the flux orientation, such as stator flux orientation (SFO) [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]: ܸ ௦ௗ ൌ 0 and ܸ ௦ ൌ ܸ ௦ ൌ ߱ ௦ ߮ ௦ . The active and reactive powers at the stator side and rotor side of the DFIG are given as:…”

“…The obtained simulation results were satisfactory, showing the robustness of the H ஶ compared to the conventional PI controller. Recently, a robust power command based on the Active Disturbance Rejection Control (ADRC) for DFIG used in a WECS system has been designed in [14]. Simulation results showed that the proposed ADRC controller had the best performance in terms of robustness against machine's parameter variations.…”