Virtual-Flux-Based Predictive Direct Power Control of AC/DC Converters With Online Inductance Estimation

This paper presents an improved predictive direct power control (P-DPC) algorithm for grid-connected three-phase voltage source converters without AC-side voltage sensors. The new algorithm is based on virtual-flux (VF) estimation and operates with constant switching frequency. Predictive controller selects in every sampling period appropriate voltage vector sequence and calculates duty cycles in order to minimize instantaneous active and reactive power errors. The theoretical principles of this algorithm are discussed, and selected experimental measurements and scope graphs that illustrate the operation and performance of the system are presented. It is shown that VF-P-DPC algorithm exhibits several advantages, particularly sinusoidal-grid-current low harmonic distortion even when grid voltage is distorted. In addition, the algorithm provides high dynamics at low switching frequency of 2 kHz.

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

[2]  Pablo Lezana,et al.  Predictive Current Control of a Voltage Source Inverter , 2004, IEEE Transactions on Industrial Electronics.

[3]  Mariusz Malinowski,et al.  Simple Direct Power Control of Three-Phase PWM Rectifier Using Space Vector Modulation – A Comparative Study , 2003 .

[4]  J. Pontt,et al.  Predictive power control of an AC/DC/AC converter , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[5]  S. Buso,et al.  Robust dead-beat current control for PWM rectifiers and active filters , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[6]  P. Antoniewicz,et al.  Comparative study of two predictive direct power control algorithms for three-phase AC/DC converters , 2007, 2007 European Conference on Power Electronics and Applications.

[7]  Mariusz Malinowski,et al.  Virtual flux based direct power control of three-phase PWM rectifiers , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[8]  Miguel Ángel Rodriguez Vidal,et al.  Predictive Control Strategy for DC/AC Converters Based on Direct Power Control , 2007, IEEE Transactions on Industrial Electronics.

[9]  P. Antoniewicz,et al.  Predictive direct power control of three-phase boost rectifier , 2006 .

[10]  Tokuo Ohnishi,et al.  Three phase PWM converter/inverter by means of instantaneous active and reactive power control , 1991, Proceedings IECON '91: 1991 International Conference on Industrial Electronics, Control and Instrumentation.

[11]  B.T. OOi,et al.  An integrated AC drive system using a controlled-current PWM rectifier/inverter link , 1986, 1986 17th Annual IEEE Power Electronics Specialists Conference.

[12]  Frede Blaabjerg,et al.  Control in Power Electronics , 2002 .

[13]  P. Antoniewicz,et al.  Direct Power Control of an AFE Using Predictive Control , 2008, IEEE Transactions on Power Electronics.

[14]  Marian P. Kazmierkowski,et al.  Current control techniques for three-phase voltage-source PWM converters: a survey , 1998, IEEE Trans. Ind. Electron..

[15]  Toshihiko Noguchi,et al.  Direct power control of PWM converter without power source voltage sensors , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[16]  S. Aurtenechea,et al.  Predictive Direct Power Control - A New Control Strategy for DC/AC Converters , 2006, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[17]  Jorge Pontt,et al.  Predictive Control of a Three-Phase Neutral-Point-Clamped Inverter , 2007, IEEE Transactions on Industrial Electronics.

[18]  Pericle Zanchetta,et al.  Predictive Current Control for Multilevel Active Rectifiers With Reduced Switching Frequency , 2008, IEEE Transactions on Industrial Electronics.

[19]  P. Antoniewicz,et al.  Virtual Flux Predictive Direct Power Control of three phase AC/DC converter , 2008, 2008 Conference on Human System Interactions.

[20]  Johann W. Kolar,et al.  Comparison of Prediction Techniques to Compensate Time Delays Caused by Digital Control of a Three-Phase Buck-Type PWM Rectifier System , 2008, IEEE Transactions on Industrial Electronics.

[21]  Jorge L. Duarte,et al.  Reference frames fit for controlling PWM rectifiers , 1999, IEEE Trans. Ind. Electron..

[22]  Liuchen Chang,et al.  An Advanced SVPWM-Based Predictive Current Controller for Three-Phase Inverters in Distributed Generation Systems , 2008, IEEE Transactions on Industrial Electronics.

[23]  P. Antoniewicz,et al.  Predictive Direct Power Control Algorithm for Three Phase AC/DC Converter , 2007, EUROCON 2007 - The International Conference on "Computer as a Tool".