Inner current control method for modular multilevel converter applied in motor drive

This paper presents the modular multilevel converter as medium voltage motor driver. An investigation of the capacitor requirements is performed and a novel control method, based in the inner current control, is proposed. This method can ensure the capacitor balancing as well minimizes the harmonic current in the converter phases. The control method is evaluated by computational simulations of a three-phase driver of a 350 kW, 2.3 kV induction motor. The simulated results have proven the effectiveness of the control structure in the startup procedure and steady state operation.

[1]  Drazen Dujic,et al.  A versatile DC-DC converter for energy collection and distribution using the Modular Multilevel Converter , 2011, Proceedings of the 2011 14th European Conference on Power Electronics and Applications.

[2]  Makoto Hagiwara,et al.  Negative-sequence reactive-power control by the modular multilevel cascade converter based on double-star chopper-cells (MMCC-DSCC) , 2010, 2010 IEEE Energy Conversion Congress and Exposition.

[3]  H. Akagi,et al.  Control and Experiment of Pulsewidth-Modulated Modular Multilevel Converters , 2009, IEEE Transactions on Power Electronics.

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

[5]  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.

[6]  R. Marquardt,et al.  Modular Multilevel Converter: An universal concept for HVDC-Networks and extended DC-Bus-applications , 2010, The 2010 International Power Electronics Conference - ECCE ASIA -.

[7]  Makoto Hagiwara,et al.  A modular multilevel PWM inverter for medium-voltage motor drives , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[8]  Rainer Marquardt,et al.  A new AC/AC-multilevel converter family applied to a single-phase converter , 2003, The Fifth International Conference on Power Electronics and Drive Systems, 2003. PEDS 2003..

[9]  D. Retzmann,et al.  A new Multilevel Voltage-Sourced Converter Topology for HVDC Applications , 2008 .

[10]  Hans-Joachim Knaak,et al.  Modular multilevel converters and HVDC/FACTS: A success story , 2011, Proceedings of the 2011 14th European Conference on Power Electronics and Applications.

[11]  Manfred Winkelnkemper,et al.  Low output frequency operation of the Modular Multi-Level Converter , 2010, 2010 IEEE Energy Conversion Congress and Exposition.

[12]  I. Boldea,et al.  Control issues in adjustable speed drives , 2008, IEEE Industrial Electronics Magazine.