ETO light multilevel inverter for STATCOM

This paper presents a 10 MVA multilevel inverter for the application of static synchronous compensator (STATCOM). Emitter turn-off (ETO) thyristors are used as active switching devices in the inverter. The cascade multilevel inverter is based on ETO light H-bridge building block (HBBB). The technology innovations of ETO simplify the HBBB construction. Air-cooled heat pipes also decrease the cost and increase the reliability. Large turn-off SOA and self-power of ETO, modular design and multi-layer protection fatherly enhance the reliability. The optimal combination modulation strategy is used to optimize the tradeoff between switching frequencies and harmonic constraints. Finally, the paper presents the complete control strategy, including the new control for balancing individual dc capacitor voltages, and multi-layer protection as well. Experimental results are given to verify the performance.

[1]  H. Akagi,et al.  Control and Performance of a Transformerless Cascade PWM STATCOM With Star Configuration , 2007, IEEE Transactions on Industry Applications.

[2]  Zhong Du,et al.  An Optimal Combination Modulation Strategy for a Seven-level Cascade Multilevel Converter Based STATCOM , 2006, Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting.

[3]  Fang Zheng Peng,et al.  Multilevel converters-a new breed of power converters , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[4]  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).

[5]  Leon M. Tolbert,et al.  Charge balance control schemes for cascade multilevel converter in hybrid electric vehicles , 2002, IEEE Trans. Ind. Electron..

[6]  Fang Zheng Peng,et al.  Multilevel inverters: a survey of topologies, controls, and applications , 2002, IEEE Trans. Ind. Electron..

[7]  Laszlo Gyugyi,et al.  Dynamic compensation of AC transmission lines by solid-state synchronous voltage sources , 1994 .

[8]  Fang Zheng Peng,et al.  A multilevel voltage-source inverter with separate DC sources for static VAr generation , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[9]  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.

[10]  A.Q. Huang,et al.  Modular ETO Voltage Source Converter Enables Low Cost FACTS Controller Applications , 2006, 2006 IEEE PES Power Systems Conference and Exposition.

[11]  Bin Chen,et al.  Control Power Self-Generation and Sensor Integration in Emitter Turn-Off Thyristor , 2009, IEEE Transactions on Industry Applications.

[12]  Bin Wu,et al.  Multilevel Voltage-Source-Converter Topologies for Industrial Medium-Voltage Drives , 2007, IEEE Transactions on Industrial Electronics.

[13]  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).

[14]  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.

[15]  Bin Chen,et al.  Development and Experimental Demonstration of a Self-Powered ETO (SPETO) , 2006, IEEE Transactions on Industry Applications.

[16]  F. L. Luo,et al.  Trinary hybrid multilevel inverter used in STATCOM with unbalanced voltages , 2005 .