Individual Voltage Balancing Strategy for PWM Cascaded H-Bridge Converter-Based STATCOM

This paper presents a new control method for cascaded connected H-bridge converter-based static compensators. These converters have classically been commutated at fundamental line frequencies, but the evolution of power semiconductors has allowed the increase of switching frequencies and power ratings of these devices, permitting the use of pulsewidth modulation techniques. This paper mainly focuses on dc-bus voltage balancing problems and proposes a new control technique (individual voltage balancing strategy), which solves these balancing problems, maintaining the delivered reactive power equally distributed among all the H-bridges of the converter.

[1]  D. Soto,et al.  A comparison of high-power converter topologies for the implementation of FACTS controllers , 2002, IEEE Trans. Ind. Electron..

[2]  Thomas A. Lipo,et al.  Switching angles and DC link voltages optimization for multilevel cascade inverters , 1998, 1998 International Conference on Power Electronic Drives and Energy Systems for Industrial Growth, 1998. Proceedings..

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

[4]  Jih-Sheng Lai,et al.  Modeling, analysis and control of cascaded-multilevel converter-based STATCOM , 2003, 2003 IEEE Power Engineering Society General Meeting (IEEE Cat. No.03CH37491).

[5]  F.Z. Peng,et al.  A universal STATCOM with delta-connected cascade multilevel inverter , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[6]  J.A. Barrena,et al.  DC Voltage Balancing for PWM Cascaded H-Bridge Converter Based STATCOM , 2006, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[7]  D.G. Holmes,et al.  Opportunities for harmonic cancellation with carrier based PWM for two-level and multi-level cascaded inverters , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[8]  C.O. Nwankpa,et al.  A new type of STATCOM based on cascading voltage source inverters with phase-shifted unipolar SPWM , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[9]  Boon-Teck Ooi,et al.  Regulating and equalizing DC capacitance voltages in multilevel STATCOM , 1997 .

[10]  Wenhua Liu,et al.  DC voltage balancing technique using multi-pulse optimal PWM for cascade H-bridge inverters based STATCOM , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[11]  Gregory F. Reed,et al.  FACTS and Custom Power Equipment for the Enhancement of Power Transmission System Performance and Power Quality , 2002 .

[12]  M.A. Rodriguez,et al.  Design, analysis and comparison of multilevel topologies for DSTATCOM applications , 2005, 2005 European Conference on Power Electronics and Applications.

[13]  Mauricio Aredes,et al.  Analysis and Software Implementation of a Robust Synchronizing PLL Circuit Based on the pq Theory , 2006, IEEE Transactions on Industrial Electronics.

[14]  M. Marchesoni,et al.  Control techniques for DC-link voltage ripples minimization in cascaded multilevel converter structures , 2005, 2005 European Conference on Power Electronics and Applications.

[15]  Fang Zheng Peng,et al.  Dynamic performance and control of a static VAr generator using cascade multilevel inverters , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[16]  Xiaojie You,et al.  A novel control algorithm for cascade shunt active power filter , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[17]  Brendan Peter McGrath,et al.  Multicarrier PWM strategies for multilevel inverters , 2002, IEEE Trans. Ind. Electron..

[18]  E. Gubia,et al.  Cascaded H-bridge multilevel converter for grid connected photovoltaic generators with independent maximum power point tracking of each solar array , 2003, IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03..

[19]  D.G. Holmes,et al.  A comparison of multicarrier PWM strategies for cascaded and neutral point clamped multilevel inverters , 2000, 2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018).

[20]  S.M. Silva,et al.  PLL structures for utility connected systems , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[21]  Marco Liserre,et al.  PLL Algorithm for Power Generation Systems Robust to Grid Voltage Faults , 2006 .

[22]  Marco Liserre,et al.  Control of H-bridge based multilevel converters , 2002, Industrial Electronics, 2002. ISIE 2002. Proceedings of the 2002 IEEE International Symposium on.

[23]  Carlo Cecati,et al.  Design of H-bridge multilevel active rectifier for traction systems , 2002 .

[24]  Leon M. Tolbert,et al.  Modulation index regulation of a multilevel inverter for static var compensation , 2003, 2003 IEEE Power Engineering Society General Meeting (IEEE Cat. No.03CH37491).

[25]  G. Venkataramanan,et al.  DC bus ripple minimization in cascaded H-bridge multilevel converters under staircase modulation , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).