A Digital Predictive Peak Current Control for Power Factor Correction With Low-Input Current Distortion

• Published in: IEEE transactions on power electronics Vol. 31; no. 1; pp. 900 - 912
• Main Authors: Youn, Han-Shin, Park, Jin-Sik, Park, Ki-Bum, Baek, Jae-Il, Moon, Gun-Woo
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.01.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Adaptive control systems; Bandwidth; Compensation; Control systems; Controllers; Current control; Digital; Digital control; Distortion; duty ratio feed-forward-control (DFF); Electric currents; Generators; Harmonic distortion; Inductors; Microprocessors; Oscillators; power factor correction (PFC); predictive control; Ramps; Slopes; Voltage control; Digital control; power factor correction (PFC); predictive control; duty ratio feed-forward-control (DFF)
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/TPEL.2015.2417194

A digital predictive peak current control (PPCC) employing the adaptive slope compensation is proposed in this paper. The PPCC precisely predicts the peak current reference with the adaptive slope compensation according to operation regions and load conditions. Thereby, the PPCC can control the peak inductor current, and it significantly reduces the total harmonic distortion compared to that of the conventional digital average current control with duty ratio feed-forward which is widely used. In addition, parts of the PPCC are implemented by utilizing the internal high-resolution ramp generator and comparator of a digital signal processor without external components. The principle and analysis of the PPCC are presented, and the performance and feasibility are verified by experimental results with universal input (90 V rms ~ 260 V rms ) and 750 W - 400 V output laboratory prototype.