A Redundancy-based scheme for balancing DC-link voltages in cascaded H-bridge rectifiers

A new voltage balancing algorithm is introduced for cascaded H-bridge rectifiers. This kind of converter is made of a series connection of H-bridge cells with separate dc-links. The proposed balancing algorithm will regulate the voltage of all dc-links to the desired reference value, even if the attached loads are very different. The input current is also programmed to be sinusoidal and has low distortion, while the switching frequency is kept low at 1 kHz. In addition, the input power factor can be controlled. The simulation and experimental results are presented to confirm the validity of the proposed algorithm.

[1]  Rainer Marquardt,et al.  A new AC/AC multilevel converter family , 2005, IEEE Transactions on Industrial Electronics.

[2]  C. Cecati,et al.  Design of H-bridge multilevel active rectifier for traction systems , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[3]  Jun Liang,et al.  A novel voltage balancing control method for flying capacitor multilevel converters , 2003, IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468).

[5]  B.-R. Lin,et al.  New multilevel rectifier based on series connection of H-bridge cell , 2000 .

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

[7]  Leopoldo García Franquelo,et al.  Analysis of the Power Balance in the Cells of a Multilevel Cascaded H-Bridge Converter , 2010, IEEE Transactions on Industrial Electronics.

[8]  Paolo Mattavelli,et al.  Comparison of current control techniques for active filter applications , 1998, IEEE Trans. Ind. Electron..

[9]  Donald Grahame Holmes,et al.  Stationary frame current regulation of PWM inverters with zero steady-state error , 2003 .

[10]  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.

[11]  S. Farhangi,et al.  Voltage balancing technique with low switching frequency for cascade multilevel active front-end , 2007, 2007 7th Internatonal Conference on Power Electronics.

[12]  Alan J. Watson,et al.  A Complete Harmonic Elimination Approach to DC Link Voltage Balancing for a Cascaded Multilevel Rectifier , 2007, IEEE Transactions on Industrial Electronics.

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

[14]  J. Roudet,et al.  A Modular Strategy for Control and Voltage Balancing of Cascaded H-Bridge Rectifiers , 2008, IEEE Transactions on Power Electronics.

[15]  Mario Marchesoni,et al.  A minimum-energy-based capacitor voltage balancing control strategy for MPC conversion systems , 1999, ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465).

[16]  Hao Yuan,et al.  Research on voltage and power balance control for cascaded modular solid-state transformer , 2011, IEEE Transactions on Power Electronics.

[17]  Bin Wu,et al.  Recent Advances and Industrial Applications of Multilevel Converters , 2010, IEEE Transactions on Industrial Electronics.

[18]  Pablo Lezana,et al.  Implementation and Control of a Hybrid Multilevel Converter With Floating DC Links for Current Waveform Improvement , 2011, IEEE Transactions on Industrial Electronics.

[19]  Marcelo A. Pérez,et al.  Multilevel Converters: An Enabling Technology for High-Power Applications , 2009, Proceedings of the IEEE.

[20]  H. Stemmler,et al.  Stationary frame generalized integrators for current control of active power filters with zero steady state error for current harmonics of concern under unbalanced and distorted operation conditions , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[21]  I Araujo-Vargas,et al.  Capacitor Voltage-Balancing Techniques for a Multipulse Rectifier With Active Injection , 2011, IEEE Transactions on Industry Applications.

[22]  Paolo Mattavelli,et al.  Repetitive-based control for selective harmonic compensation in active power filters , 2004, IEEE Transactions on Industrial Electronics.

[23]  Alex Q. Huang,et al.  Voltage and power balance control for a cascaded multilevel solid state transformer , 2010, 2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[24]  E.M. Berkouk,et al.  DC Link Capacitor Voltage Balancing in a Three-Phase Diode Clamped Inverter Controlled by a Direct Space Vector of Line-to-Line Voltages , 2007, IEEE Transactions on Power Electronics.

[25]  Pablo Lezana,et al.  Fault Detection on Multicell Converter Based on Output Voltage Frequency Analysis , 2009, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[26]  Marco Liserre,et al.  A passivity-based multilevel active rectifier with adaptive compensation for traction applications , 2003 .

[27]  G. Griva,et al.  Digital current-control schemes , 2009, IEEE Industrial Electronics Magazine.

[28]  L.M. Tolbert,et al.  Fault Diagnostic System for a Multilevel Inverter Using a Neural Network , 2007, IEEE Transactions on Power Electronics.

[29]  Peter W. Hammond,et al.  Enhancing the reliability of modular medium-voltage drives , 2002, IEEE Trans. Ind. Electron..

[30]  Pericle Zanchetta,et al.  Predictive Current Control for Multilevel Active Rectifiers With Reduced Switching Frequency , 2008, IEEE Transactions on Industrial Electronics.