An improved predictive control for parallel grid-connected doubly fed induction generator-based wind systems under unbalanced grid conditions

Recently, the massive integration of renewable energy sources, especially wind and solar ones, has attracted researchers to new issues such as power quality. In this context, this article deals with an improved deadbeat predictive control for parallel grid-connected doubly fed induction generator-based wind systems under unbalanced grid conditions. The impact of an asymmetrical voltage sag has been treated for a doubly fed induction generator- wind system with emphasis on the occurrence of the negative current. In the case of a micro-grid based on wind systems, the effect of this current increases with the line impedance and thereby the system location. An improved predictive deadbeat control technique is proposed for the rotor side converter to enhance the behaviour of the wind system. A dynamic modelling of the doubly fed induction generator in both positive and negative reference frames has been proposed to focus on the behaviour of the system for these various operating conditions. Results of different simulation scenarios prove the effectiveness of the proposed improved predictive deadbeat control.

[1]  Manel Jebali-Ben Ghorbal,et al.  Direct Virtual Torque Control for Doubly Fed Induction Generator Grid Connection , 2009, IEEE Transactions on Industrial Electronics.

[2]  Lie Xu,et al.  A Reliable Microgrid With Seamless Transition Between Grid Connected and Islanded Mode for Residential Community With Enhanced Power Quality , 2018, IEEE Transactions on Industry Applications.

[3]  Josep M. Guerrero,et al.  An Enhanced Power Sharing Scheme for Voltage Unbalance and Harmonics Compensation in an Islanded AC Microgrid , 2016, IEEE Transactions on Energy Conversion.

[4]  Josep M. Guerrero,et al.  Sequence-Impedance-Based Stability Comparison Between VSGs and Traditional Grid-Connected Inverters , 2019, IEEE Transactions on Power Electronics.

[5]  Josep M. Guerrero,et al.  Control Strategies for Islanded Microgrid Using Enhanced Hierarchical Control Structure With Multiple Current-Loop Damping Schemes , 2017, IEEE Transactions on Smart Grid.

[6]  Josep M. Guerrero,et al.  Voltage Quality Improvement in Low Voltage Distribution Networks Using Reactive Power Capability of Single-Phase PV Inverters , 2019, IEEE Transactions on Smart Grid.

[7]  Tao Wang,et al.  Coordinated Elimination Strategy of Low Order Output Current Distortion for LC-Filtered DFIG System Based on Hybrid Virtual Impedance Method , 2019, IEEE Transactions on Power Electronics.

[8]  Mahesh S. Illindala,et al.  Survivability of Prime-Mover Powered Inverter-Based Distributed Energy Resources During Microgrid Islanding , 2019, IEEE Transactions on Industry Applications.

[9]  G. Venkataramanan,et al.  A Fault Tolerant Doubly Fed Induction Generator Wind Turbine Using a Parallel Grid Side Rectifier and Series Grid Side Converter , 2008, IEEE Transactions on Power Electronics.

[10]  Y. Ling.  The fault ride through technologies for doubly fed induction generator wind turbines , 2016 .

[11]  Jung-Ik Ha,et al.  Droop Control Using Impedance of Grid-Integrated DFIG within Microgrid , 2019, IEEE Transactions on Energy Conversion.

[12]  Xiao Wang,et al.  Review of low voltage ride‐through technology of doubly‐fed induction generator , 2018, The Journal of Engineering.

[13]  Hossein Lotfi,et al.  State of the Art in Research on Microgrids: A Review , 2015, IEEE Access.

[14]  Vigna K. Ramachandaramurthy,et al.  Islanding Detection and Enhancement of Microgrid Performance , 2018, IEEE Systems Journal.

[15]  B. Tudu,et al.  Analyzing the dynamic behavior of a DFIG-based wind farm under sudden grid disturbances , 2017, 2017 International Conference on Intelligent Sustainable Systems (ICISS).

[16]  Ilhem Slama-Belkhodja,et al.  Supervisory for parallel operation of two DFIG-based wind farm using variable wind speeds , 2011, Eighth International Multi-Conference on Systems, Signals & Devices.

[17]  Wei TIAN,et al.  Droop control method for load share and voltage regulation in high-voltage microgrids , 2016 .

[18]  Yu Ling.  Improvement of Fault Ride through Capability of Doubly-Fed Induction Generator Wind Turbines with Hysteresis Controller , 2014 .

[19]  M. Hossein Kafi.  Voltage sag analysis in distribution system with doubly fed induction generator based wind farm , 2017, 2017 14th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON).

[20]  Abdelkader Mezouar,et al.  Dual Robust Control of Grid-Connected DFIGs-Based Wind- Turbine-Systems under Unbalanced Grid Voltage Conditions , 2018, Stability Control and Reliable Performance of Wind Turbines.

[21]  Jun Yao,et al.  Dynamic Stability Analysis and Improved LVRT Schemes of DFIG-Based Wind Turbines During a Symmetrical Fault in a Weak Grid , 2020, IEEE Transactions on Power Electronics.

[22]  Mohamed Kesraoui,et al.  Grid voltage local regulation by a doubly fed induction generator–based wind turbine , 2017 .

[23]  Debirupa Hore,et al.  Neural network–based improved active and reactive power control of wind-driven double fed induction generator under varying operating conditions , 2018 .

[24]  Vinod Khadkikar,et al.  A new virtual harmonic impedance scheme for harmonic power sharing in an islanded microgrid , 2016, 2016 IEEE Power and Energy Society General Meeting (PESGM).