Observer-Based FL-SMC Active Damping for Back-to-Back PWM Converter with LCL Grid Filter

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Gwon, Jin-Su;Lee, Hansoo;Kim, Sungshin

  • 투고 : 2015.08.17
  • 심사 : 2015.09.24
  • 발행 : 2015.09.25

초록

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.

키워드

PWM converters;FL-SMC control;Suboptimal observer;Kalman filter;Total harmonic distortion;Power quality

참고문헌

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과제정보

연구 과제번호 : IT기반 융합산업 창의인력양성 사업단