A Novel Modulation Scheme and Voltage Balancing Algorithm for Modular Multilevel Converter

被引:72
作者
Dekka, Apparao [1 ]
Wu, Bin [1 ]
Zargari, Navid R. [2 ]
机构
[1] Ryerson Univ, Dept Elect & Comp Engn, Toronto, ON M5B 2K3, Canada
[2] Rockwell Automat, Medium Voltage R&D Dept, Cambridge, ON N1R 5X1, Canada
关键词
Capacitor voltage balancing; decoupled sampled average pulsewidth modulation (DSA-PWM) scheme; modular multilevel converter (MMC); phase-shifted carrier PWM (PSC-PWM); three-level flying capacitor (3L-FC) converter; SPACE-VECTOR PWM; PULSE-WIDTH MODULATION; INDUCTION-MOTOR DRIVE; DYNAMIC PERFORMANCE; CONTROL STRATEGY; INVERTER; ELIMINATION; ZERO;
D O I
10.1109/TIA.2015.2477481
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The control complexity of modular multilevel converter (MMC) increases with the number of submodules per arm. In particular, the implementation of a pulsewidth modulation (PWM) scheme and a voltage balancing approach for MMC is a major challenge. This paper proposes a generalized low-cost less computational decoupled sampled average PWM scheme for MMC. In this approach, the reference output voltage is generated by averaging the two nearest voltage levels from the top and bottom arms in each sampling interval. In addition, a simplified voltage balancing approach is proposed for MMC. The proposed approach does not require a sorting technique to select the submodules. Instead, the relative comparison logic is presented. The effectiveness of the proposed modulation scheme and voltage balancing approach is evaluated on a single-phase MMC system with three-level flying capacitor submodules. The proposed approach is extended to a three-phase system, which results in dynamic balancing of the zero-sequence voltage. Hence, the zero-sequence current is minimized. The performance of the proposed three-phase approach is compared with that of the conventional phase-shifted carrier PWM scheme. The simulation and experimental studies show successful voltage balancing among submodule capacitor voltage, low harmonic distortion, and less ripple in output current.
引用
收藏
页码:432 / 443
页数:12
相关论文
共 38 条
  • [1] Modular Multilevel Converter AC Motor Drives With Constant Torque From Zero to Nominal Speed
    Antonopoulos, Antonios
    Angquist, Lennart
    Norrga, Staffan
    Ilves, Kalle
    Harnefors, Lennart
    Nee, Hans-Peter
    [J]. IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 2014, 50 (03) : 1982 - 1993
  • [2] An Energy-Based Controller for HVDC Modular Multilevel Converter in Decoupled Double Synchronous Reference Frame for Voltage Oscillation Reduction
    Bergna, Gilbert
    Berne, Erik
    Egrot, Philippe
    Lefranc, Pierre
    Arzande, Amir
    Vannier, Jean-Claude
    Molinas, Marta
    [J]. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2013, 60 (06) : 2360 - 2371
  • [3] Application of a three-level NPC inverter as a three-phase four-wire power quality compensator by generalized 3DSVM
    Dai, NY
    Wong, MC
    Han, YD
    [J]. IEEE TRANSACTIONS ON POWER ELECTRONICS, 2006, 21 (02) : 440 - 449
  • [4] A New Family of Modular Multilevel Converter Based on Modified Flying-Capacitor Multicell Converters
    Dargahi, Vahid
    Sadigh, Arash Khoshkbar
    Abarzadeh, Mostafa
    Eskandari, Soheila
    Corzine, Keith A.
    [J]. IEEE TRANSACTIONS ON POWER ELECTRONICS, 2015, 30 (01) : 138 - 147
  • [5] Operation, Control, and Applications of the Modular Multilevel Converter: A Review
    Debnath, Suman
    Qin, Jiangchao
    Bahrani, Behrooz
    Saeedifard, Maryam
    Barbosa, Peter
    [J]. IEEE TRANSACTIONS ON POWER ELECTRONICS, 2015, 30 (01) : 37 - 53
  • [6] Dekka A, 2015, APPL POWER ELECT CO, P1227, DOI 10.1109/APEC.2015.7104504
  • [7] Elimination of DC-Link Current Ripple for Modular Multilevel Converters With Capacitor Voltage-Balancing Pulse-Shifted Carrier PWM
    Deng, Fujin
    Chen, Zhe
    [J]. IEEE TRANSACTIONS ON POWER ELECTRONICS, 2015, 30 (01) : 284 - 296
  • [8] A Control Method for Voltage Balancing in Modular Multilevel Converters
    Deng, Fujin
    Chen, Zhe
    [J]. IEEE TRANSACTIONS ON POWER ELECTRONICS, 2014, 29 (01) : 66 - 76
  • [9] A Study on DC Voltage Control for Chopper-Cell-Based Modular Multilevel Converters in D-STATCOM Application
    Du, Sixing
    Liu, Jinjun
    [J]. IEEE TRANSACTIONS ON POWER DELIVERY, 2013, 28 (04) : 2030 - 2038
  • [10] An Improved Control System for Modular Multilevel Converters with New Modulation Strategy and Voltage Balancing Control
    Fan, Shengfang
    Zhang, Kai
    Xiong, Jian
    Xue, Yaosuo
    [J]. IEEE TRANSACTIONS ON POWER ELECTRONICS, 2015, 30 (01) : 358 - 371