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Vienna rectifier is a kind of power converter with complicated operating constraints. Thus, it is difficult to control with conventional control strategies, especially during transients or under low power factor operation. This study proposes a hybrid control scheme with dual loops for the three-phase Vienna rectifier. In the outer loop, proportional-integral controller is designed to regulate the...
In this paper, the effect of digital control on output impedance converter is analyzed. The continuous time equivalent model is used to describe the digital control system in voltage mode, then output impedance is derived by small-signal model. The time delay caused by digital control is considered to analyze output impedance. The analysis indicates that digital control sharpens the peak of output...
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