Publication

Abstract : This study investigates the design of robust nonlinear controller for control of voltage and frequency of variable-speed standalone Wind Energy Conversion System (WECS). The variation in wind-speed and load raise the oscillation in terminal-voltage and frequency. These oscillation need to be minimized for enhancing the power management. To overcome this issue, an Intelligent Proportional Integral Terminal Sliding Mode Controller (iPI-TSMC) is proposed. Proposed iPI-TSMC establishes a fast-finite-time convergence with minimum steady-state error. Also this controller is robust against the wind velocity perturbation, load variations, and external disturbances. Closed-loop stability of the proposed controller is validated using Lyapunov-stability-theorem. The cogency of the proposed iPI-TSMC has been validated through MATLAB/simulink environment for different operating conditions. Also performance of iPI-TSMC is compared with fractional-order-proportional-integral (FOPI) and conventional integer-order-proportional-integral (IOPI) controllers. The simulation results, signifies the efficacy of iPI-TSMC as compared to other controllers. Feasibility of proposed iPI-TSMC controller is verified in real-time HIL simulator using op4510 platform.