Tìm kiếm theo: Tác giả Nguyen Ngoc Nam

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  • Tác giả : Nguyen Ngoc Nam; Ngoc-Duc Nguyen; Changwoo Yoon; Young Il Lee;  Người hướng dẫn: -;  Đồng tác giả: - (2021)

    This paper proposes a disturbance observer-based robust model predictive control (MPC) for a voltage sensorless grid-connected inverter with an inductive-capacitive-inductive (LCL) filter. A full-state estimator and a grid voltage observer are designed to reduce the number of sensors. A lumped disturbance observer, considering the parameter mismatch along with the grid impedance variation, is also designed to eliminate the steady-state error. A cost function, which consists of the error state and control input, is employed in the MPC design. Based on the Lyapunov stability, the full-state observer, voltage estimation, lumped disturbance observer, and the robust controller gains are ob...