PROJECT TITLE :
High-Performance Grid Simulator Using Parallel Structure Fractional Repetitive Control
During this paper, a high-performance grid simulator based on a parallel structure fractional repetitive control scheme is utilized to emulate various operation situations of power grids for testing power products. In this paper, a simple fractional repetitive management scheme is proposed for grid simulators to realize high-accuracy tracking performance. Using parallel branches, the proposed repetitive controller will flexibly choose the interested harmonics for compensation, and independently, tune the convergency rate at selective harmonic frequencies. Compared with the traditional repetitive management, the proposed control theme achieves faster transient response. Moreover, the amount of delay units required within the proposed repetitive controller is reduced to a minimum of half of that during a conventional repetitive controller. Design method and stability criteria are presented in details. A set of experimental results is provided to verify the effectiveness of the proposed approach.
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