An interconnected observer for modular multilevel converter

Mohamed Trabelsi, Malek Ghanes, Omar Ellabban, Haitham Abu-Rub, Lazhar Ben-Brahim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Modular multilevel converter (MMC) is an attractive topology for transformer-less high voltage applications due to its capability to reach high voltage levels by the use of power semiconductors. Each submodule can be considered as a controlled voltage source where capacitor's voltage should be maintained at a certain level for proper operation of the MMC and for fault detection and protection purposes. Besides, the minimization of the circulating current, which does not flow to the load, is crucial to achieve stable and efficient operation of the MMC. Thus, this paper presents a novel Interconnected Observer (IO) based Model Predictive Control (MPC) for a single-phase MMC. The newly designed observer is used to estimate the capacitors' voltages using the circulating and load currents. This approach introduces the capacitance value of the cell capacitors as a parameter uncertainty toward making the system performance robust with anonymous constant parameters. The estimated capacitors' voltages are then used by the proposed MPC algorithm to achieve stable and balanced voltage and for current control with reduced circulating current in various operating conditions. Simulation studies are performed in Matlab/Simulink environment to verify the proposed design.

Original languageEnglish
Title of host publicationECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509007370
DOIs
Publication statusPublished - 13 Feb 2017
Event2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016 - Milwaukee, United States
Duration: 18 Sep 201622 Sep 2016

Other

Other2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016
CountryUnited States
CityMilwaukee
Period18/9/1622/9/16

Fingerprint

Converter
Observer
Voltage
Capacitor
Electric potential
Capacitors
Model predictive control
Model Predictive Control
Electric current control
Transformer
Matlab/Simulink
Parameter Uncertainty
Fault Detection
Capacitance
Fault detection
Control Algorithm
System Performance
Semiconductors
Topology
Simulation Study

Keywords

  • Grid Integration
  • Multilevel Inverter
  • Power Conditioning System
  • quasi-Z-Source Network

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Control and Optimization

Cite this

Trabelsi, M., Ghanes, M., Ellabban, O., Abu-Rub, H., & Ben-Brahim, L. (2017). An interconnected observer for modular multilevel converter. In ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings [7854853] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2016.7854853

An interconnected observer for modular multilevel converter. / Trabelsi, Mohamed; Ghanes, Malek; Ellabban, Omar; Abu-Rub, Haitham; Ben-Brahim, Lazhar.

ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2017. 7854853.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Trabelsi, M, Ghanes, M, Ellabban, O, Abu-Rub, H & Ben-Brahim, L 2017, An interconnected observer for modular multilevel converter. in ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings., 7854853, Institute of Electrical and Electronics Engineers Inc., 2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016, Milwaukee, United States, 18/9/16. https://doi.org/10.1109/ECCE.2016.7854853
Trabelsi M, Ghanes M, Ellabban O, Abu-Rub H, Ben-Brahim L. An interconnected observer for modular multilevel converter. In ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings. Institute of Electrical and Electronics Engineers Inc. 2017. 7854853 https://doi.org/10.1109/ECCE.2016.7854853
Trabelsi, Mohamed ; Ghanes, Malek ; Ellabban, Omar ; Abu-Rub, Haitham ; Ben-Brahim, Lazhar. / An interconnected observer for modular multilevel converter. ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2017.
@inproceedings{8bc8d9b839664ca5bc27a7c6a56e81b6,
title = "An interconnected observer for modular multilevel converter",
abstract = "Modular multilevel converter (MMC) is an attractive topology for transformer-less high voltage applications due to its capability to reach high voltage levels by the use of power semiconductors. Each submodule can be considered as a controlled voltage source where capacitor's voltage should be maintained at a certain level for proper operation of the MMC and for fault detection and protection purposes. Besides, the minimization of the circulating current, which does not flow to the load, is crucial to achieve stable and efficient operation of the MMC. Thus, this paper presents a novel Interconnected Observer (IO) based Model Predictive Control (MPC) for a single-phase MMC. The newly designed observer is used to estimate the capacitors' voltages using the circulating and load currents. This approach introduces the capacitance value of the cell capacitors as a parameter uncertainty toward making the system performance robust with anonymous constant parameters. The estimated capacitors' voltages are then used by the proposed MPC algorithm to achieve stable and balanced voltage and for current control with reduced circulating current in various operating conditions. Simulation studies are performed in Matlab/Simulink environment to verify the proposed design.",
keywords = "Grid Integration, Multilevel Inverter, Power Conditioning System, quasi-Z-Source Network",
author = "Mohamed Trabelsi and Malek Ghanes and Omar Ellabban and Haitham Abu-Rub and Lazhar Ben-Brahim",
year = "2017",
month = "2",
day = "13",
doi = "10.1109/ECCE.2016.7854853",
language = "English",
booktitle = "ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings",
publisher = "Institute of Electrical and Electronics Engineers Inc.",

}

TY - GEN

T1 - An interconnected observer for modular multilevel converter

AU - Trabelsi, Mohamed

AU - Ghanes, Malek

AU - Ellabban, Omar

AU - Abu-Rub, Haitham

AU - Ben-Brahim, Lazhar

PY - 2017/2/13

Y1 - 2017/2/13

N2 - Modular multilevel converter (MMC) is an attractive topology for transformer-less high voltage applications due to its capability to reach high voltage levels by the use of power semiconductors. Each submodule can be considered as a controlled voltage source where capacitor's voltage should be maintained at a certain level for proper operation of the MMC and for fault detection and protection purposes. Besides, the minimization of the circulating current, which does not flow to the load, is crucial to achieve stable and efficient operation of the MMC. Thus, this paper presents a novel Interconnected Observer (IO) based Model Predictive Control (MPC) for a single-phase MMC. The newly designed observer is used to estimate the capacitors' voltages using the circulating and load currents. This approach introduces the capacitance value of the cell capacitors as a parameter uncertainty toward making the system performance robust with anonymous constant parameters. The estimated capacitors' voltages are then used by the proposed MPC algorithm to achieve stable and balanced voltage and for current control with reduced circulating current in various operating conditions. Simulation studies are performed in Matlab/Simulink environment to verify the proposed design.

AB - Modular multilevel converter (MMC) is an attractive topology for transformer-less high voltage applications due to its capability to reach high voltage levels by the use of power semiconductors. Each submodule can be considered as a controlled voltage source where capacitor's voltage should be maintained at a certain level for proper operation of the MMC and for fault detection and protection purposes. Besides, the minimization of the circulating current, which does not flow to the load, is crucial to achieve stable and efficient operation of the MMC. Thus, this paper presents a novel Interconnected Observer (IO) based Model Predictive Control (MPC) for a single-phase MMC. The newly designed observer is used to estimate the capacitors' voltages using the circulating and load currents. This approach introduces the capacitance value of the cell capacitors as a parameter uncertainty toward making the system performance robust with anonymous constant parameters. The estimated capacitors' voltages are then used by the proposed MPC algorithm to achieve stable and balanced voltage and for current control with reduced circulating current in various operating conditions. Simulation studies are performed in Matlab/Simulink environment to verify the proposed design.

KW - Grid Integration

KW - Multilevel Inverter

KW - Power Conditioning System

KW - quasi-Z-Source Network

UR - http://www.scopus.com/inward/record.url?scp=85015423719&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85015423719&partnerID=8YFLogxK

U2 - 10.1109/ECCE.2016.7854853

DO - 10.1109/ECCE.2016.7854853

M3 - Conference contribution

BT - ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

ER -