Two Vector Based Direct Power Control of AC/DC Grid Connected Converters Using a Constant Switching Frequency

다국어 초록 (Multilingual Abstract)

In this paper, an improved Direct Power Control (DPC) algorithm is presented for grid connected three phase PWM rectifiers. The new DPC approach is based on two main tasks. First the optimization of the look-up table, which is well-known in conventional DPC, is outlined for selecting the optimum converter output voltage vectors. Secondly a very simple and effective method is used to directly calculate their duty cycles from the power errors. Therefore, the measured active and reactive powers are made to track their references using hysteresis controllers. Then two vectors are selected and applied during one control cycle to minimize both the active and reactive power ripples. The main advantages of this method are that there is no need of linear current controllers, coordinates transformations or modulators. In addition, the control strategy is able to operate at constant switching frequencies to ease the design of the power converter and the AC harmonic filter. The control exhibits a good steady state performance and improves the dynamic response without any overshoot in the line current. Theoretical principles of the proposed method are discussed. Both simulation and experimental results are presented to verify the performance and effectiveness of this control scheme.

목차 (Table of Contents)

• Abstract
• I. INTRODUCTION
• II. MATHEMATICAL MODEL
• III. CONTROL STRATEGY
• IV. SIMULATION RESULTS
• V. EXPERIMENTAL RESULTS
• VI. CONCLUSION
• REFERENCES

참고문헌 (Reference)

1 P. Antoniewicz, "Virtual-fluxbased predictive direct power control of AC/DC converters with online inductance estimation" 55 (55): 4381-4390, 2008

2 M. Malinowski, "Virtual-flux-based direct power control of three-phase PWM rectifiers" 37 (37): 1019-1027, 2001

3 C. Schauder, "Vector analysis and control of advanced static VAR compensators" 140 (140): 299-306, 1993

4 Y. Zhang, "Three-vectors-based predictive direct power control of the doubly fed induction generator for wind energy applications" 29 (29): 3485-3500, 2014

5 A. H. Bhat, "Three-phase, power quality improvement ac/dc converters" 78 (78): 276-289, 2008

6 A. Djerioui, "Sliding mode direct power control strategy of a power quality based on a sliding mode observer" 56 : 325-331, 2014

7 M. Malinowski, "Simple direct power control of three-phase PWM rectifier using space-vector modulation(DPC-SVM)" 51 (51): 447-454, 2004

8 G. Brando, "Quick and high performance direct power control for multilevel voltage source rectifiers" 121 : 152-169, 2015

9 G. Abad, "Predictive direct power control of the doubly fed induction machine with reduced power ripple at low constant switching frequency" 1119-1124, 2007

10 P. Cortés, "Predictive current control strategy with imposed load current spectrum" 23 (23): 612-618, 2008

11 S. A. Larrinaga, "Predictive control strategy for DC/AC converters based on direct power control" 54 (54): 1261-1271, 2007

12 A. Chaoui, "Power quality improvement using DPC controlled three-phase shunt active filter" 80 (80): 657-666, 2010

13 S. -J. Jeong, "Improvement of predictive current control performance using online parameter estimation in phase controlled rectifier" 22 (22): 1820-1825, 2007

14 D. Zhi, "Improved direct power control of grid connected DC/AC converters" 24 (24): 1280-1292, 2009

15 M. Monfared, "High performance direct instantaneous power control of PWM rectifiers" 51 (51): 947-954, 2010

16 Y. Zhang, "Direct torque control of permanent magnet synchronous motor with reduced torque ripple and commutation frequency" 26 (26): 235-248, 2011

17 N. Mesbahi, "Direct power control of shunt active filter using high selectivity filter(HSF)under distorted or unbalanced conditions" 108 : 113-123, 2014

18 R. Datta, "Direct power control of grid-connected wound rotor induction machine without rotor position sensors" 16 (16): 390-399, 2001

19 P. Cortes, "Direct power control of an AFE using predictive control" 23 (23): 2516-2523, 2008

20 T. Noguchi, "Direct power control of PWM converter without power-source voltage sensors" 34 (34): 473-479, 1998

21 D. Zhi, "Direct power control of DFIG with constant switching frequency and improved transient performance" 22 (22): 110-118, 2007

22 A. Bouafia, "Design and implementation of predictive current control of three-phase PWM rectifier using space-vector modulation(SVM)" 51 (51): 2473-2481, 2010

23 A. Bouafia, "Design and implementation of high performance direct power control of three-phase PWM rectifier, via fuzzy and PI controller for output voltage regulation" 50 (50): 6-13, 2009

24 M. Monfared, "Design and experimental verification of a dead beat power control strategy for low cost three phase PWM converters" 42 (42): 418-425, 2012

25 A. Chaoui, "DPC controlled three phase active filter for power quality improvement" 30 (30): 476-485, 2008

26 M. P. Kazmierkowski, "Current control techniques for three phase voltage-source PWM converters : a survey" 45 (45): 691-703, 1998

27 A. Bouafia, "Analysis and design of new switching table for direct power control of three-phase PWM rectifier" 703-709, 2008

28 H. M. Kojabadi, "A novel DSP based current-controlled PWM strategy for single phase grid connected inverters" 21 (21): 985-993, 2006

29 I. Takahashi, "A new quick-response and high-efficiency control strategy of an induction motor" 5 : 820-827, 1986

30 Z. Wang, "A DC voltage monitoring and control method for three-phase grid-connected wind turbine inverters" 23 (23): 1118-1125, 2008