TY - JOUR ID - 719 TI - Efficient Low-Voltage Ride-Through Nonlinear Backstepping Control Strategy for PMSG-Based Wind Turbine During the Grid Faults JO - Journal of Operation and Automation in Power Engineering JA - JOAPE LA - en SN - 2322-4576 AU - Nasiri, M. AU - Milimonfared, J. AU - Fathi, S. H. AD - Department of Electrical Engineering, Faculty of Engineering, Abhar Branch Islamic Azad University, Abhar, Iran AD - amir kabir university AD - Department of Electrical Engineering, Amirkabir University of Technology, Tehran 15875-4413, Iran Y1 - 2018 PY - 2018 VL - 6 IS - 2 SP - 218 EP - 228 KW - Backstepping controller KW - Low voltage ride-through (LVRT) KW - maximum power point tracking (MPPT) KW - permanent magnet synchronous generator (PMSG) KW - wind turbine DO - 10.22098/joape.2006.4183.1325 N2 - This paper presents a new nonlinear backstepping controller for a direct-driven permanent magnet synchronous generator-based wind turbine, which is connected to the power system via back-to-back converters. The proposed controller deals with maximum power point tracking (MPPT) in normal condition and enhances the low-voltage ride-through (LVRT) capability in fault conditions. In this method, to improve LVRT capability, machine-side converter controls dc-link voltage and MPPT is performed by grid side converter. Hence, PMSG output power is reduced very fast and dc-link voltage variation is reduced.  Due to nonlinear relationship between dc-link voltage and controller input, nonlinear backstepping controller has good performances. By applying the proposed controller, dc-link overvoltage is significantly decreased. The proposed controller has good performance in comparison with Proportional-Integral (PI) controller and Sliding Mode Controller (SMC). In asymmetrical faults, to decrease grid side active power oscillations, the nonlinear backstepping dual-current controller is designed for positive- and negative- sequence components. The simulation results confirm that the proposed controller is efficient in different conditions. UR - https://joape.uma.ac.ir/article_719.html L1 - https://joape.uma.ac.ir/article_719_38bbcb2c90684d4f15ca1cdcb4d5bfa1.pdf ER -