Self-tuning fuzzy PI dc-bus voltage controller and fuzzy switching sequences selection for direct power control of PWM AC/DC converter

• Published in: 2017 9th International Conference on Electronics, Computers and Artificial Intelligence (ECAI) pp. 1 - 6
• Main Authors: Jamma, M., Bennassar, A., Akherraz, M., Fahassa, C., Barara, M., Oproescu, M.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-06-2017
• Subjects: AC-DC power converters; fuzzy direct power control; Power control; Pulse width modulation; PWM AC/DC converter; Reactive power; Regulators; self-tuning fuzzy PI controller; Switches; unity power factor operation; Voltage control
• ISBN: 9781509064571; 1509064575
• DOI: 10.1109/ECAI.2017.8166498

In the present work, we introduce a new control approach, called fuzzy direct power control (F-DPC) method for three-phase PWM AC/DC converters. In this study, the control of the dc-bus voltage is performed by self-tuning fuzzy PI regulator and the selection of PWM converter switching-sequences is based on fuzzy logic rules. These rules directly use the instantaneous active and reactive power errors and the position of grid voltage vector as fuzzy variables. The proposed F-DPC strategy is an effective tool to control the dc-bus voltage, the active and reactive power to their references and to ensure a high unity power factor (UPF) operation. Numerical simulation results obtained using MATLAB/Simulink environment are presented. These extensive results show that the F-DPC gives the good performance and excellent robustness.