Autotuning of Digitally Controlled Boost Power Factor Correction Rectifiers

This paper presents a robust autotuning technique for digitally controlled boost power factor correction (PFC) rectifiers. The proposed tuning approach perturbs the PFC current and voltage control loops through injection of digital perturbation signals, and achieves the desired crossover frequencies and phase margins for wide ranges of operating conditions and power-stage parameters through simple compensator gain adjustments. An added benefit of the proposed approach is a precise estimation of the filter inductance and capacitance values, therefore facilitating accurate continuous/discontinuous conduction mode (CCM/DCM) boundary detection, which minimizes transition effects and further reduces the input current harmonic distortion. The proposed approach is verified by experimental results on a 300-W digitally controlled boost PFC rectifier prototype.

[1]  R. D. Middlebrook,et al.  Measurement of loop gain in feedback systems , 1975 .

[2]  Fu-Zen Chen,et al.  Digital Control for Improved Efficiency and Reduced Harmonic Distortion Over Wide Load Range in Boost PFC Rectifiers , 2010, IEEE Transactions on Power Electronics.

[3]  Stéphane Bibian,et al.  Digital control with improved performance for boost power factor correction circuits , 2001, APEC 2001. Sixteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.01CH37181).

[4]  Robert W. Erickson,et al.  Self-tuning digitally controlled low-harmonic rectifier having fast dynamic response , 2003 .

[5]  Jose A. Cobos,et al.  The determination of the boundaries between continuous and discontinuous conduction modes in PWM DC-to-DC converters used as power factor preregulators , 1992 .

[6]  D. Maksimovic,et al.  Impact of digital control in power electronics , 2004, 2004 Proceedings of the 16th International Symposium on Power Semiconductor Devices and ICs.

[7]  Dragan Maksimovic,et al.  Accurate mode boundary detection in digitally controlled boost power factor correction rectifiers , 2010, 2010 IEEE Energy Conversion Congress and Exposition.

[8]  D. Maksimovic,et al.  System identification of power converters with digital control through cross-correlation methods , 2005, IEEE Transactions on Power Electronics.

[9]  D. Maksimovic,et al.  Design and Implementation of an Adaptive Tuning System Based on Desired Phase Margin for Digitally Controlled DC–DC Converters , 2009, IEEE Transactions on Power Electronics.

[10]  S. Saggini,et al.  Simplified Model Reference-Based Autotuningfor Digitally Controlled SMPS , 2008, IEEE Transactions on Power Electronics.

[11]  Bin Wu,et al.  A digital power factor correction (PFC) control strategy optimized for DSP , 2004 .

[12]  Simone Buso,et al.  Simple digital control improving dynamic performance of power factor preregulators , 1997 .

[13]  D. Maksimovic,et al.  An Autotuning Digital Controller for DC–DC Power Converters Based on Online Frequency-Response Measurement , 2009, IEEE Transactions on Power Electronics.

[14]  Jan A. Melkebeek,et al.  Digitally controlled boost power-factor-correction converters operating in both continuous and discontinuous conduction mode , 2005, IEEE Transactions on Industrial Electronics.

[15]  Bin Wu,et al.  A New Duty Cycle Control Strategy for Power Factor Correction and FPGA Implementation , 2006, IEEE Transactions on Power Electronics.

[16]  Robert W. Erickson,et al.  Fundamentals of Power Electronics , 2001 .

[17]  Dragan Maksimovic,et al.  Auto-tuning of digitally controlled boost Power Factor Correction rectifiers operating in continuous conduction mode , 2010, 2010 IEEE 12th Workshop on Control and Modeling for Power Electronics (COMPEL).

[18]  D. Maksimovic,et al.  Adaptive Tuning of Switched-Mode Power Supplies Operating in Discontinuous and Continuous Conduction Modes , 2009, IEEE Transactions on Power Electronics.

[19]  S. Saggini,et al.  Autotuning of Digitally Controlled DC–DC Converters Based on Relay Feedback , 2007, IEEE Transactions on Power Electronics.

[20]  Aleksandar Prodic,et al.  Predictive digital current programmed control , 2003 .

[21]  Jan Melkebeek,et al.  Duty-ratio feedforward for digitally controlled boost PFC converters , 2003 .