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We discuss observer and state-feedback controller design for grid-connected voltage source power converters with LCL-filter under symmetric grid voltage variations where only the converter-side currents are available for feedback. The LCL-filter is modeled as lossy network including resistances, capacitance and converter-side and grid-side inductance.… (More)

— Explicit model predictive control with disturbance observer is discussed for grid-connected voltage source power converters. Control objectives are set-point tracking of the DC-link voltage and reference tracking of the reactive power exchanged with the grid under unknown disturbances (load power). Controller and observer design are based on a linearized… (More)

We discuss pole-placement based nonlinear state-feedback control of the DC-link voltage in grid-connected voltage source power converters. For controller design we use a linearized system model, compute the feedback gains via pole placement and present an analytical expression for the gains in dependence of the actual operating point. The linearized model… (More)

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