Ride-through strategy of quasi-Z-source wind power generation system under the asymmetrical grid voltage fault

Asymmetrical grid voltage will introduce negative-sequence current components on the grid side and cause large voltage ripple of quasi-Z-source capacitors. It will lead to the torque ripple of generator. This study proposes a novel control method based on super-capacitor (SC) to improve the capability of asymmetric fault ride through in quasi-Z-source wind power generation system (WPGS). The stream of system power, in the condition of unbalanced grid voltage, is discussed in detail in this study. To limit the voltage rise and suppress the 2-order voltage ripple of quasi-Z-source capacitors, the throughput power of SC is controlled by proportional–resonant controller to track the output power subtraction between generator and quasi-Z-source inverter. Meanwhile, the negative-sequence component of the grid-connected current is decreased significantly. Finally, simulation and experimental results are given to verify the theoretical analysis.

[1]  Baoming Ge,et al.  An Effective Control Method for Three-Phase Quasi-Z-Source Cascaded Multilevel Inverter Based Grid-Tie Photovoltaic Power System , 2014, IEEE Transactions on Industrial Electronics.

[2]  N. Kumaresan,et al.  Operation and closed-loop control of wind-driven stand-alone doubly fed induction enerators using a single inverter-battery system , 2012 .

[3]  M. Taha,et al.  Design and control of a quasi-Z-source inverter based for wind power generation using PMSG , 2015, 2015 IEEE 15th International Conference on Environment and Electrical Engineering (EEEIC).

[4]  Loganathan Umanand,et al.  Negative sequence compensation within fundamental positive sequence reference frame for a stiff micro-grid generation in a wind power system using slip ring induction machine , 2009 .

[5]  F.Z. Peng,et al.  Four quasi-Z-Source inverters , 2008, 2008 IEEE Power Electronics Specialists Conference.

[6]  Hui Li,et al.  A Single-Phase PV Quasi-Z-Source Inverter With Reduced Capacitance Using Modified Modulation and Double-Frequency Ripple Suppression Control , 2016, IEEE Transactions on Power Electronics.

[7]  P. Chiueh,et al.  Co-torrefaction of sewage sludge and leucaena by using microwave heating , 2016 .

[8]  F.Z. Peng,et al.  Maximum boost control of the Z-source inverter , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[9]  Sun Qu,et al.  On control strategy of Z-source inverter for grid integration of direct-driven wind power generator , 2012, Proceedings of the 31st Chinese Control Conference.

[10]  Baoming Ge,et al.  Quasi-Z-Source inverter based PMSG wind power generation system , 2011, 2011 IEEE Energy Conversion Congress and Exposition.

[11]  Baoming Ge,et al.  An energy stored quasi-Z source cascaded multilevel inverter based photovoltaic power generation system , 2015, 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014.

[12]  Tanmoy Maity,et al.  Study of the suitability of recently proposed quasi Z-source inverter for wind power conversion , 2014, 2014 International Conference on Renewable Energy Research and Application (ICRERA).

[13]  Mustafa Mohamadian,et al.  Single-phase induction motor drive system using z-source inverter , 2010 .

[14]  Dmitri Vinnikov,et al.  Quasi-Z-Source-Based Isolated DC/DC Converters for Distributed Power Generation , 2011, IEEE Transactions on Industrial Electronics.

[15]  M. Mohamadian,et al.  A New Variable-Speed Wind Energy Conversion System Using Permanent-Magnet Synchronous Generator and $Z$-Source Inverter , 2009, IEEE Transactions on Energy Conversion.

[16]  Bharani Kumar Ramasamy,et al.  Direct-drive low-speed wind energy conversion system incorporating axial-type permanent magnet generator and Z-source inverter with sensorless maximum power point tracking controller , 2013 .

[17]  Hao Zhou,et al.  A LVRT method for wind power PMSG system with Z-source inverter , 2011, 2011 IEEE Power Engineering and Automation Conference.

[18]  Fang Zheng Peng.  Z-source inverter , 2002 .

[19]  Yung-Ruei Chang,et al.  Novel maximum-power-extraction algorithm for PMSG wind generation system , 2007 .

[20]  F.Z. Peng,et al.  Z-source inverter based wind power generation system , 2008, 2008 IEEE International Conference on Sustainable Energy Technologies.

[21]  Adikanda Parida,et al.  Model-based loss minimisation scheme for wind solar hybrid generation system using (grid-connected) doubly fed induction generator , 2016 .