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The aim of this paper is to propose and compare two multivariable current controllers of voltage source converters (VSCs) connected to the grid through an LCL filter. The first proposal is a linear quadratic (LQ) servocontroller, which uses a full-order estimator to obtain the full state vector. The second proposal is based on the internal model control (IMC). The behavior of both controllers is tested...
The aim of this paper is to propose a multivariable current controller of voltage source converters (VSC) connected to the grid through an LCL filter. The proposal is a linear quadratic (LQ) servocontroller, which uses a fullorder estimator to obtain the full state vector. Two kinds of estimators are proposed and compared: prediction estimator and Luenberger estimator. The behavior and robustness...
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