Approximate-model-based predictive current control for buck converter in CCM

This paper presents an approximate-model-based predictive current control (AMPCC) method for current regulation of buck converter, when it operates in continuous-conduction mode (CCM). In addition, the inductor current constraints are incorporated to further reduce the output voltage ripple. The output current of the buck converter is directly manipulated by the proposed AMPCC controller without PWM modulator. A hardware prototype is built and the experimental verification is conducted. The steady-state operation, the influence of inductor current constraints and the dynamic performance of AMPCC are presented and studied. Experimental results demonstrate that the proposed AMPCC method is able to regulate the output current of the buck converter in CCM effectively and robustly under different operation scenarios.

[1]  K. T. Tan,et al.  Low cross regulation SIMO DC/DC converter with model predictive voltage control , 2013, 2013 IEEE Power & Energy Society General Meeting.

[2]  Tobias Geyer,et al.  Direct Model Predictive Control: A Review of Strategies That Achieve Long Prediction Intervals for Power Electronics , 2014, IEEE Industrial Electronics Magazine.

[3]  Benfei Wang,et al.  Model Predictive Voltage Control for Single-Inductor Multiple-Output DC–DC Converter With Reduced Cross Regulation , 2016, IEEE Transactions on Industrial Electronics.

[4]  Tobias Geyer,et al.  Direct Model Predictive Current Control Strategy of DC–DC Boost Converters , 2013, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[5]  Ralph Kennel,et al.  Predictive control in power electronics and drives , 2008, 2008 IEEE International Symposium on Industrial Electronics.

[6]  King Jet Tseng,et al.  Dynamic model predictive voltage control for single-input dual-output flyback converter , 2016, 2016 IEEE 11th Conference on Industrial Electronics and Applications (ICIEA).

[7]  Enrico Santi,et al.  Model predictive control of dual-output nine-switch inverter with output filter , 2015, 2015 IEEE Energy Conversion Congress and Exposition (ECCE).

[8]  Yu-Lung Ke,et al.  Analysis and implementation of half-bridge series-parallel resonant converter for battery chargers , 2010, 2010 IEEE Industrial and Commercial Power Systems Technical Conference - Conference Record.

[9]  Enrico Santi,et al.  FPGA-based model predictive current controller for 3×3 direct matrix converter , 2015, 2015 IEEE Energy Conversion Congress and Exposition (ECCE).

[10]  Yongchang Zhang,et al.  Performance evaluation of direct power control and model predictive control for three-level AC/DC converters , 2015, 2015 IEEE Energy Conversion Congress and Exposition (ECCE).

[11]  T. Geyer,et al.  Direct model predictive current control of DC-DC boost converters , 2012, 2012 15th International Power Electronics and Motion Control Conference (EPE/PEMC).

[12]  Abhisek Ukil,et al.  A Digital Method of Power-Sharing and Cross-Regulation Suppression for Single-Inductor Multiple-Input Multiple-Output DC–DC Converter , 2017, IEEE Transactions on Industrial Electronics.

[13]  Ying-Chun Chuang,et al.  High-Efficiency ZCS Buck Converter for Rechargeable Batteries , 2010, IEEE Transactions on Industrial Electronics.