Publisher : Korean Institute of Intelligent Systems
DOI : 10.5391/IJFIS.2015.15.3.200
Title & Authors
Observer-Based FL-SMC Active Damping for Back-to-Back PWM Converter with LCL Grid Filter Gwon, Jin-Su; Lee, Hansoo; Kim, Sungshin;
This paper proposes an active damping control method for a grid-side converter that has an LCL grid filter in the back-to-back converter. To remove the resonant frequency components produced by the LCL filter, it is necessary to measure the grid current. To do this, sensors must be added. However, it is not necessary to add sensors because the grid current is estimated by designing a suboptimal observer. In order to remove the nonlinearity and to gain fast response of control, both feedback linearization and sliding mode control are applied. The proposed method is verified through a simulation.
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