An Equivalent Hybrid Model for a Large-Scale Modular Multilevel Converter and Control Simulations

Modular multilevel converter (MMC) is adopted mainly for high voltage applications with many power blocks per arm. Before commissioning a large-scale MMC application, it is vital to simulate and study internal and system-level dynamics. However, it is challenging to simulate an MMC with many SMs in...

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Main Authors: Mohammed Alharbi, Semih Isik, Subhashish Bhattacharya
Format: Article
Language:English
Published: IEEE 2022-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9777699/
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author Mohammed Alharbi
Semih Isik
Subhashish Bhattacharya
author_facet Mohammed Alharbi
Semih Isik
Subhashish Bhattacharya
author_sort Mohammed Alharbi
collection DOAJ
description Modular multilevel converter (MMC) is adopted mainly for high voltage applications with many power blocks per arm. Before commissioning a large-scale MMC application, it is vital to simulate and study internal and system-level dynamics. However, it is challenging to simulate an MMC with many SMs in EMT simulation tools due to simulation time and computation burden. Therefore, several simplified modeling techniques are proposed to reduce the challenges. Even though the existing models reasonably reduce the computation complexity and simulation time, there are still challenges as the internal dynamics of an MMC cannot be fully captured. On the other hand, the detailed equivalent models capture the internal dynamics, but the simulation complexity and the time increase. Therefore, it is still a need for better, faster, and more accurate simulation models to study the system-level and internal dynamics of an MMC. Therefore, this paper proposes a hybrid simulation model for a large-scale MMC application using a scale-up control structure method. The proposed method is verified in the MATLAB/Simulink simulation tool. Besides, the proposed model is tested and verified at the Real-Time Digital Simulator (RTDS) in a Hardware-in-Loop (HIL) environment.
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spelling doaj.art-eeb2b4d6fbac4ce4a26e15cff57dac842022-12-22T02:35:07ZengIEEEIEEE Access2169-35362022-01-0110535045351210.1109/ACCESS.2022.31760069777699An Equivalent Hybrid Model for a Large-Scale Modular Multilevel Converter and Control SimulationsMohammed Alharbi0https://orcid.org/0000-0001-7634-5724Semih Isik1https://orcid.org/0000-0002-0233-8115Subhashish Bhattacharya2https://orcid.org/0000-0001-9311-5744Department of Electrical Engineering, College of Engineering, King Saud University, Riyadh, Saudi ArabiaDepartment of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC, USADepartment of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC, USAModular multilevel converter (MMC) is adopted mainly for high voltage applications with many power blocks per arm. Before commissioning a large-scale MMC application, it is vital to simulate and study internal and system-level dynamics. However, it is challenging to simulate an MMC with many SMs in EMT simulation tools due to simulation time and computation burden. Therefore, several simplified modeling techniques are proposed to reduce the challenges. Even though the existing models reasonably reduce the computation complexity and simulation time, there are still challenges as the internal dynamics of an MMC cannot be fully captured. On the other hand, the detailed equivalent models capture the internal dynamics, but the simulation complexity and the time increase. Therefore, it is still a need for better, faster, and more accurate simulation models to study the system-level and internal dynamics of an MMC. Therefore, this paper proposes a hybrid simulation model for a large-scale MMC application using a scale-up control structure method. The proposed method is verified in the MATLAB/Simulink simulation tool. Besides, the proposed model is tested and verified at the Real-Time Digital Simulator (RTDS) in a Hardware-in-Loop (HIL) environment.https://ieeexplore.ieee.org/document/9777699/EMThybrid modelMMCHVDCsimulationRTDS
spellingShingle Mohammed Alharbi
Semih Isik
Subhashish Bhattacharya
An Equivalent Hybrid Model for a Large-Scale Modular Multilevel Converter and Control Simulations
IEEE Access
EMT
hybrid model
MMC
HVDC
simulation
RTDS
title An Equivalent Hybrid Model for a Large-Scale Modular Multilevel Converter and Control Simulations
title_full An Equivalent Hybrid Model for a Large-Scale Modular Multilevel Converter and Control Simulations
title_fullStr An Equivalent Hybrid Model for a Large-Scale Modular Multilevel Converter and Control Simulations
title_full_unstemmed An Equivalent Hybrid Model for a Large-Scale Modular Multilevel Converter and Control Simulations
title_short An Equivalent Hybrid Model for a Large-Scale Modular Multilevel Converter and Control Simulations
title_sort equivalent hybrid model for a large scale modular multilevel converter and control simulations
topic EMT
hybrid model
MMC
HVDC
simulation
RTDS
url https://ieeexplore.ieee.org/document/9777699/
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