Comparison of bipolar sub-modules for the alternate arm converter

Research on dc-fault tolerant multilevel converters has gained noticeable attention over recent years. The alternate arm converter (AAC) is one of such emerging multilevel converter topologies, and a hybrid topology of the two-level converter and the modular multilevel converter (MMC). Bipolar sub-modules (SMs) that can produce both positive and negative voltages are the building blocks of the AAC. This paper analyses the operation of an AAC with the full-bridge SM (FB-SM) and the cross-connected SM (CC-SM). The conduction and switching losses of the two SM configurations are evaluated and compared, in order to identify the suitability of CC-SM for AACs and its performance compared to the FB-SM. The CC-SM with identical semiconductor devices has reduced losses compared to the CC-SM with higher rated devices in the cross-connected path. It is concluded that the CC-SM does not offer advantages in the losses, construction, and application to the AAC, compared to FB-SM.

[1]  Georgios Konstantinou,et al.  Selective harmonic elimination pulse-width modulation of modular multilevel converters , 2013 .

[2]  Georgios Konstantinou,et al.  Circulating Current Injection Methods Based on Instantaneous Information for the Modular Multilevel Converter , 2015, IEEE Transactions on Industrial Electronics.

[3]  Anshuman Shukla,et al.  Five level cross connected cell for cascaded converters , 2013, 2013 15th European Conference on Power Electronics and Applications (EPE).

[4]  Staffan Norrga,et al.  Analysis and operation of modular multilevel converters with phase-shifted carrier PWM , 2013, 2013 IEEE Energy Conversion Congress and Exposition.

[5]  Maryam Saeedifard,et al.  Circulating Current Suppression of the Modular Multilevel Converter in a Double-Frequency Rotating Reference Frame , 2016, IEEE Transactions on Power Electronics.

[6]  Rainer Marquardt,et al.  An innovative modular multilevel converter topology suitable for a wide power range , 2003, 2003 IEEE Bologna Power Tech Conference Proceedings,.

[7]  T. C. Green,et al.  Control of an alternate arm converter connected to a star transformer , 2014, 2014 16th European Conference on Power Electronics and Applications.

[8]  Georgios Konstantinou,et al.  A Modified Voltage Balancing Algorithm for the Modular Multilevel Converter: Evaluation for Staircase and Phase-Disposition PWM , 2015, IEEE Transactions on Power Electronics.

[9]  Fainan Hassan,et al.  The Alternate Arm Converter: A New Hybrid Multilevel Converter With DC-Fault Blocking Capability , 2014, IEEE Transactions on Power Delivery.

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

[11]  Maryam Saeedifard,et al.  Operation, Control, and Applications of the Modular Multilevel Converter: A Review , 2015, IEEE Transactions on Power Electronics.

[12]  Georgios Konstantinou,et al.  Switching Frequency Analysis of Staircase-Modulated Modular Multilevel Converters and Equivalent PWM Techniques , 2016, IEEE Transactions on Power Delivery.

[13]  Pat Wheeler,et al.  A sub-module capacitor voltage balancing scheme for the Alternate Arm Converter (AAC) , 2013, 2013 15th European Conference on Power Electronics and Applications (EPE).

[14]  John E. Fletcher,et al.  A novel MMC control scheme to increase the DC voltage in HVDC transmission systems , 2017 .

[15]  Timothy C. Green,et al.  Zero phase sequence voltage injection for the alternate arm converter , 2015 .

[16]  Dushan Boroyevich,et al.  Design and control of modular multilevel alternate arm converter (AAC) with Zero Current Switching of director switches , 2015, 2015 IEEE Energy Conversion Congress and Exposition (ECCE).

[17]  Anshuman Shukla,et al.  A Generalized Cross-Connected Submodule Structure for Hybrid Multilevel Converters , 2016, IEEE Transactions on Industry Applications.

[18]  Georgios Konstantinou,et al.  Active Redundant Submodule Configuration in Modular Multilevel Converters , 2013, IEEE Transactions on Power Delivery.

[19]  Timothy C. Green,et al.  Cell capacitor sizing in multilevel converters: Cases of the modular multilevel converter and alternate arm converter , 2015 .

[20]  Staffan Norrga,et al.  Tolerance Band Modulation Methods for Modular Multilevel Converters , 2013, IEEE Transactions on Power Electronics.

[21]  Anshuman Shukla,et al.  Modulation, control and capacitor voltage balancing of alternate arm modular multilevel converter with DC fault blocking capability , 2014, 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014.

[22]  Georgios Konstantinou,et al.  Comparison and evaluation of sub-module configurations in modular multilevel converters , 2015, 2015 IEEE 11th International Conference on Power Electronics and Drive Systems.

[23]  William Ewart Henley,et al.  OPERATION , 1973, ISO 22301:2019 and business continuity management – Understand how to plan, implement and enhance a business continuity management system (BCMS).

[24]  Samir Kouro,et al.  Circuit Topologies, Modeling, Control Schemes, and Applications of Modular Multilevel Converters , 2015, IEEE Transactions on Power Electronics.

[25]  A. R. Thorat,et al.  Simulation of an Alternate Arm Modular Multilevel Converter with overlap angle control for capacitor voltage balancing , 2015, 2015 International Conference on Industrial Instrumentation and Control (ICIC).

[26]  Alireza Nami,et al.  Modular Multilevel Converters for HVDC Applications: Review on Converter Cells and Functionalities , 2015, IEEE Transactions on Power Electronics.

[27]  Xiuli Wang,et al.  Circulating Current Suppressing Strategy for MMC-HVDC Based on Nonideal Proportional Resonant Controllers Under Unbalanced Grid Conditions , 2015, IEEE Transactions on Power Electronics.