A large signal dynamic model for single-phase AC-to-DC converters with power factor correction

• Main Authors: Lu, Y.W., Wangfeng Zhang, Yanfei Liu
• Format: Conference Proceeding
• Language: English
• Subjects: Applied sciences; Circuit properties; Circuit simulation; Circuit topology; Computational modeling; Current control; DC-DC power converters; Electric, optical and optoelectronic circuits; Electrical engineering. Electrical power engineering; Electrical machines; Electronic circuits; Electronics; Exact sciences and technology; Power electronics, power supplies; Power factor correction; Pulse width modulation converters; Regulation and control; Signal convertors; Steady-state; Switching circuits; Switching, multiplexing, switched capacity circuits; Transfer functions
• ISSN: 0275-9306; 2377-6617
• DOI: 10.1109/PESC.2004.1355567

This paper presents a model for average current control that can be applied to DC-to-DC converters and AC-to- DC power factor correction (PFC) circuits. The proposed DC-to-DC model consists of two parts: 1) an averaged DC-to-DC converter topology with all the switching elements replaced by dependent sources 2) an average current control scheme with a pulse width modulation (PWM) model, which determines the duty cycles. Similarly, the AC-to-DC PFC model is obtained by combining an averaged boost converter model with the PFC control scheme using average current control. To verify the proposed model, simulated results were compared to experimental waveforms. The experimental results demonstrate that the model can correctly predict the steady-state and large signal dynamic behavior for average current controlled DC-to-DC and AC-to-DC PFC converters.