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Efficient Low-Voltage Ride-Through Nonlinear Backstepping Control Strategy for PMSG-Based Wind Turbine During the Grid Faults | ||
| Journal of Operation and Automation in Power Engineering | ||
| مقاله 7، دوره 6، شماره 2، اسفند 2018، صفحه 218-228 اصل مقاله (1.59 M) | ||
| نوع مقاله: Research paper | ||
| شناسه دیجیتال (DOI): 10.22098/joape.2006.4183.1325 | ||
| نویسندگان | ||
| M. Nasiri* 1؛ J. Milimonfared2؛ S. H. Fathi3 | ||
| 1Department of Electrical Engineering, Faculty of Engineering, Abhar Branch Islamic Azad University, Abhar, Iran | ||
| 2amir kabir university | ||
| 3Department of Electrical Engineering, Amirkabir University of Technology, Tehran 15875-4413, Iran | ||
| چکیده | ||
| 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. | ||
| کلیدواژه‌ها | ||
| Backstepping controller؛ Low voltage ride-through (LVRT)؛ maximum power point tracking (MPPT)؛ permanent magnet synchronous generator (PMSG)؛ wind turbine | ||
| مراجع | ||
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