Enhancement of Steady-State Performance of PFC Boost Rectifier using Modulated Model Predictive Control

Abstract

This paper proposes a modulated-type predictive current control strategy for a single-phase power factor corrected boost rectifier. The conventional model predictive control strategy suffers from distorted input current and polluted power. Thus, a high sampling frequency is necessary to satisfy the utilization standards. However, the selection of a high sampling period demands significant computation power. Motivated by the drawbacks of the traditional model predictive control strategy, the modulation stage is added to the control loop and releases the trade-off between high sampling frequency requirement and total harmonic distortion to achieve good current quality. Fully benefits from the advantages of predictive model control, such as ease of implementation and high-speed dynamic response, are exploited while ensuring an acceptable power quality on a lower sampling frequency. The theoretical framework to support evidence-based practice is comprehensively explained. The proposed closed-loop design methodology is analytically revealed, and critical aspects of the proposed method are discussed. Numerous simulations work, including steady-state and transient operations, are performed to demonstrate the superiority of the proposed method by comparing it with the traditional model predictive approach. Finally, experimental validation is conducted to prove the feasibility of the proposed modulated predictive control method in real time.