Frequency Response Improvement of PMSG Wind Turbines Using a Washout Filter

TR Number
Date
2020-09-14
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
Abstract

High integration of renewable energy resources, such as wind turbines, to the power grid decreases the power system inertia. To improve the frequency response of a low-inertia system, virtual inertia approach can be used. This letter proposes a control method to decrease the frequency transients and restore frequency to its nominal value. A wind turbine usually works based on maximum power point tracking (MPPT) curves to achieve the maximum power. In this letter, the proposed controller uses a non-MPPT method to leave power for frequency regulation during transients. Moreover, it uses a washout filter-based method to remove the steady-state error in the frequency. Simulation results in the PSCAD environment validate the improved performance of the proposed method during load changes by comparing it with the MPPT and non-MPPT methods.

Description
Keywords
Control, frequency regulation, inertia support, PMSG wind turbine, washout filter
Citation
Shabestari, P.M.; Mehrizi-Sani, A. Frequency Response Improvement of PMSG Wind Turbines Using a Washout Filter. Energies 2020, 13, 4797.