Step-by-step design and tuning of VOC control loops for grid connected rectifiers

Based on the symmetrical optimum (SO), and its extended version (ESO), this paper presents step-by-step guidelines for designing the near-optimum ac current and dc voltage controllers of the VOC controlled grid connected rectifiers, with considering all practical aspects. Also, the effect of controllers' parameters on the performance of the converter is explained. Extensive simulation and experimental results are provided which confirm the validity of the proposed technique.