Step-by-step design procedure for a grid-connected three-phase PWM voltage source converter

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Filter Optimization for Grid Interactive Voltage Source Inverters (2010, background): “The basic guideline for the selection of the LCL filter parameters is established in [4] and [5].”
Synchronization of Parallel Single-Phase Inverters With Virtual Oscillator Control (2014, background): “Additionally, as outlined in [47]–[52], the proposed filter-design strategy also ensures that the relative distortion contributions of the individual inverter output currents are matched, such that the THD of the parallel system is essentially the same as the THD of each individual inverter.”
Grid Impedance Estimation via Excitation of $LCL$ -Filter Resonance (2005, methodology): “This technique can be used in obtaining the frequency characteristic of the grid, if the method repeats the measurements at different frequencies.”
Grid-Filter Design for a Multimegawatt Medium-Voltage Voltage-Source Inverter (2011, background): “Passive damping causes a decrease of the overall system efficiency because of the associated losses that are partly caused by the low-frequency harmonics (fundamental and undesired pollution) present in the state variables and partly by the switching-frequency harmonics [4], [5].”