Modulation and control of a new alternate arm multilevel converter for high‐voltage direct current system with direct current fault ride‐through capability

SUMMARY A new alternate arm multilevel converter composed of direction switch (DS) and cascaded H-bridge (CHB) with direct current (DC) fault blocking capability is presented. First, the topology and operation principles of the converter are introduced. Second, an overlap square modulation scheme for the DS is proposed to keep energy balance, then the nearest level modulation (NLM) is applied to the CHB, and a new capacitor voltages balancing strategy of sub-module in CHB is proposed. Third, blocking mode and multiple static synchronous compensator modes of the converter under DC fault condition are analyzed. Finally, the effectiveness of the modulation strategies and DC fault ride-through capability for the new alternate arm multilevel converter-based voltage direct current system is verified by PSCAD®/EMTDC (Manitoba HVDC Research Centre, Manitoba, Canada) simulations. Copyright © 2013 John Wiley & Sons, Ltd.

[1]  Thierry Meynard,et al.  Multi-Level Choppers for High Voltage Applications , 1992 .

[2]  T.A. Meynard,et al.  Multi-level conversion: high voltage choppers and voltage-source inverters , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.

[3]  Hachemi Chekireb,et al.  Generalised algorithm of novel space vector modulation: for N‐level three‐phase voltage source inverter , 2008 .

[4]  Ding Ming,et al.  Impact Analysis of Human Error on Protection System Reliability , 2012 .

[5]  Zheng Xu,et al.  Modulation and control for a new hybrid cascaded multilevel converter with DC blocking capability , 2012, 2013 IEEE Power & Energy Society General Meeting.

[6]  V.G. Agelidis,et al.  VSC-Based HVDC Power Transmission Systems: An Overview , 2009, IEEE Transactions on Power Electronics.

[7]  D. R. Critchley,et al.  A ew Hybrid Multi-Level Voltage-Source Converter with DC Fault Blocking Capability , 2010 .

[8]  Hans-Peter Nee,et al.  On interaction between internal converter dynamics and current control of high-performance high-power AC motor drives with modular multilevel converters , 2010, 2010 IEEE Energy Conversion Congress and Exposition.

[9]  J. Pontt,et al.  Power Distribution in Hybrid Multi-cell Converter with Nearest Level Modulation , 2007, 2007 IEEE International Symposium on Industrial Electronics.

[10]  D. G. Holmes,et al.  Decentralized control of a cascaded H-Bridge multilevel converter , 2011, 2011 IEEE International Symposium on Industrial Electronics.

[11]  Jiang Daozhuo,et al.  Study of the Proportional Resonant Control Based Modular Multilevel Converter , 2012, 2012 Third International Conference on Digital Manufacturing & Automation.

[12]  B.-R. Lin.  High power factor ac/dc/ac converter with h‐bridge cascade five‐level pwm inverter , 2001 .

[13]  Rainer Marquardt,et al.  A New Single Phase AC/AC-Multilevel Converter for Traction Vehicles Operating On Ac Line Voltage , 2004 .

[14]  Patrick Wheeler,et al.  DC fault ride-through capability and STATCOM operation of a hybrid voltage source converter arrangement for HVDC power transmission and reactive power compensation , 2012 .

[15]  David Reginald Trainer,et al.  Innovative concepts for hybrid multi-level converters for HVDC power transmission , 2010 .

[16]  El Madjid Berkouk,et al.  Study and control of two two‐level PWM rectifier—clamping bridge–seven‐level NPC VSI cascade: application to PMSM speed control , 2006 .

[17]  S. Allebrod,et al.  New transformerless, scalable Modular Multilevel Converters for HVDC-transmission , 2008, 2008 IEEE Power Electronics Specialists Conference.