A Novel Single-Phase Interleaved-Based Three-Level PFC Rectifier

Power quality is a concern and more and more relevant due to the numerous technologies requiring an interface with the power grid through power electronics converters. Thus, efficient power factor correction (PFC) circuits, ensuring unitary power factor, sinusoidal AC currents, and controlled DC voltages, are of utmost importance. Aligned with such importance, a novel Single-phase Interleaved-based Three-level (SIT) PFC rectifier is proposed in this paper, which can be used in various applications for AC-DC conversion. A thorough explanation of the SIT PFC rectifier is given, supported by a comparison with the traditional solutions. Additionally, a predictive-based current control is discussed. The obtained simulations permit to examine the complete operation principle of the SIT PFC rectifier (i.e., sinusoidal AC current, interleaved-based mode, three levels of voltage, controlled DC voltage), revealing its accuracy even when operating in critical conditions of operation.