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This paper illustrates the assessment between the multiloop control strategies that aim to damp the resonance hazard of LCL-filters and expanding the available stability margins. The establishment of the multiloop control is sustained in a sensorless manner with the reconstruction of the state variables using the Kalman observer, thus enhancing the cost measures and reliability of the distributed...
This paper proposes a observer-based state feedback controller for the PWM inverter output LCL filter used in PV applications. The controller is comprised of an inner pole-placement loop and its poles are placed following the state-apace control theory. An additional outer current loop is responsible for making sure the grid inductor output current is as clean as possible of harmonic components. Its...
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