Concentrated submodules model for modular multilevel converters

The MMC is currently the converter of choice for HVDC applications, which leads to a high number of submodules being deployed. The simulation of conversion systems based on MMCs is typically demanding on numeric computation power. Even more when all the SMs are to be included in a full scale switched model. Real time simulators and hardware-in-the-loop based design require efficient simulation models and the MMCs are a real challenge to these tasks. This work discusses previously presented simulation oriented models and proposes a concentrated submodules model that accounts for the effects of dead-time in the switching signals of an MMC. It is shown that the effects of dead-time change the dynamic behavior of an MMC and should be considered whenever highly accurate simulation models are desired.

[1]  J. Peralta,et al.  Detailed and Averaged Models for a 401-Level MMC–HVDC System , 2012, IEEE Transactions on Power Delivery.

[2]  Wei Li,et al.  An Equivalent Circuit Method for Modelling and Simulation of Modular Multilevel Converters in Real-Time HIL Test Bench , 2016, IEEE Transactions on Power Delivery.

[3]  Wenjing Liu,et al.  Accelerated Model of Modular Multilevel Converters in PSCAD/EMTDC , 2013, IEEE Transactions on Power Delivery.

[4]  Aniruddha M. Gole,et al.  Ultra-fast Electromagnetic Transient Model of the Modular Multilevel Converter for HVDC Studies , 2016 .

[5]  U N Gnanarathna,et al.  Efficient Modeling of Modular Multilevel HVDC Converters (MMC) on Electromagnetic Transient Simulation Programs , 2011, IEEE Transactions on Power Delivery.

[6]  Jean Mahseredjian,et al.  Modular Multilevel Converter Models for Electromagnetic Transients , 2014, IEEE Transactions on Power Delivery.

[7]  Staffan Norrga,et al.  A Computationally Efficient Continuous Model for the Modular Multilevel Converter , 2014, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[8]  G. P. Adam,et al.  Generalized switching function model of modular multilevel converter , 2015, 2015 IEEE International Conference on Industrial Technology (ICIT).

[9]  Ricardo Lizana,et al.  Capacitor voltage balancing method for modular multilevel converter with flying capacitor submodules , 2017, 2017 IEEE International Conference on Industrial Technology (ICIT).

[10]  J. Hasler,et al.  Efficient Techniques for Real Time Simulation of MMC Systems , 2013 .

[11]  J. Jatskevich,et al.  Dynamic Averaged and Simplified Models for MMC-Based HVDC Transmission Systems , 2013, IEEE Transactions on Power Delivery.

[12]  Chunpeng Zhang,et al.  A two-stage efficient model of modular multilevel converter for electromagnetic transient simulation , 2016, 2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe).

[13]  Gang Li,et al.  Factory acceptance test of a five-terminal MMC control and protection system using hardware-in-the-loop method , 2015, 2015 IEEE Power & Energy Society General Meeting.

[14]  S. Bernet,et al.  Derivation of an equivalent submodule per arm for modular multilevel converters , 2012, 2012 15th International Power Electronics and Motion Control Conference (EPE/PEMC).

[15]  Xiu Yao,et al.  Analysis and Suppression of Circulating Harmonic Currents in a Modular Multilevel Converter Considering the Impact of Dead Time , 2015, IEEE Transactions on Power Electronics.

[16]  Kai Strunz,et al.  Nested Fast and Simultaneous Solution for Time-Domain Simulation of Integrative Power-Electric and Electronic Systems , 2007 .

[17]  Fernando Mancilla-David,et al.  Accelerating detailed simulations of an HVDC system based on modular multilevel converters in a multi-core environment , 2015, 2015 North American Power Symposium (NAPS).

[18]  Dragan Jovcic,et al.  Modelling of MMC including half-bridge and Full-bridge submodules for EMT study , 2016, 2016 Power Systems Computation Conference (PSCC).

[19]  Xavier Guillaud,et al.  On the modeling of MMC for use in large scale dynamic simulations , 2016, 2016 Power Systems Computation Conference (PSCC).

[20]  Xiaofu Xiong,et al.  An Adaptive Voltage-Balancing Method for High-Power Modular Multilevel Converters , 2018, IEEE Transactions on Power Electronics.

[21]  Liangzhong Yao,et al.  Equivalent electromagnetic model of self-blocking MMC with DC fault isolation capability , 2016, 2016 IEEE Power and Energy Society General Meeting (PESGM).

[22]  Wei Li,et al.  An FPGA-based real-time simulator for HIL testing of modular multilevel converter controller , 2014, 2014 IEEE Energy Conversion Congress and Exposition (ECCE).