Enhanced control strategy of full-bridge modular multilevel converter

G. P. Adam, S. J. Finney, B. W. Williams

Research output: Contribution to conferencePaper

8 Citations (Scopus)

Abstract

This paper describes a control approach that allows the cell capacitor voltages of the full-bridge modular multilevel converter (FB-MMC) to be controlled independent of the input dc link voltage. Moreover, this control approach offers the possibility of operating FB-MMC from bi-polar dc link voltages; thus, creating new possibilities for building generic hybrid dc grids with reversible dc link voltage, where the conventional line commutated current source converters can operate alongside voltage source converters. Furthermore, the presented control approach improves the dc fault ride-through of the FB-MMC compared to existing approaches. This could be achieved by an active control of the arm currents and cell capacitor voltages, and full exploitation of the FB-MMC redundant switch states. Operation of the FB-MMC with reversible DC link voltage and decoupled control of the cell capacitor voltages from the dc link voltage are demonstrated using simulations. The major findings and implications of this work are highlighted.

Conference

Conference2015 International Conference on Renewable Energy Research and Applications (ICRERA)
Abbreviated titleICRERA 2015
CountryItaly
CityPalermo
Period22/11/1525/11/15

Fingerprint

Electric potential
Capacitors
Switches

Keywords

  • DC fault ride-through capability
  • DC short circuit proof
  • high-voltage DC transmission systems
  • half and full bridge modular multilevel converters
  • line commutated converter
  • voltage control
  • voltage measurement
  • capacitors
  • circuit faults
  • modulation

Cite this

Adam, G. P., Finney, S. J., & Williams, B. W. (2015). Enhanced control strategy of full-bridge modular multilevel converter. 1432 - 1436. Paper presented at 2015 International Conference on Renewable Energy Research and Applications (ICRERA), Palermo , Italy. https://doi.org/10.1109/ICRERA.2015.7418644
Adam, G. P. ; Finney, S. J. ; Williams, B. W. / Enhanced control strategy of full-bridge modular multilevel converter. Paper presented at 2015 International Conference on Renewable Energy Research and Applications (ICRERA), Palermo , Italy.5 p.
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abstract = "This paper describes a control approach that allows the cell capacitor voltages of the full-bridge modular multilevel converter (FB-MMC) to be controlled independent of the input dc link voltage. Moreover, this control approach offers the possibility of operating FB-MMC from bi-polar dc link voltages; thus, creating new possibilities for building generic hybrid dc grids with reversible dc link voltage, where the conventional line commutated current source converters can operate alongside voltage source converters. Furthermore, the presented control approach improves the dc fault ride-through of the FB-MMC compared to existing approaches. This could be achieved by an active control of the arm currents and cell capacitor voltages, and full exploitation of the FB-MMC redundant switch states. Operation of the FB-MMC with reversible DC link voltage and decoupled control of the cell capacitor voltages from the dc link voltage are demonstrated using simulations. The major findings and implications of this work are highlighted.",
keywords = "DC fault ride-through capability, DC short circuit proof, high-voltage DC transmission systems, half and full bridge modular multilevel converters, line commutated converter, voltage control, voltage measurement, capacitors, circuit faults, modulation",
author = "Adam, {G. P.} and Finney, {S. J.} and Williams, {B. W.}",
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note = "2015 International Conference on Renewable Energy Research and Applications (ICRERA), ICRERA 2015 ; Conference date: 22-11-2015 Through 25-11-2015",

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Adam, GP, Finney, SJ & Williams, BW 2015, 'Enhanced control strategy of full-bridge modular multilevel converter' Paper presented at 2015 International Conference on Renewable Energy Research and Applications (ICRERA), Palermo , Italy, 22/11/15 - 25/11/15, pp. 1432 - 1436. https://doi.org/10.1109/ICRERA.2015.7418644

Enhanced control strategy of full-bridge modular multilevel converter. / Adam, G. P.; Finney, S. J.; Williams, B. W.

2015. 1432 - 1436 Paper presented at 2015 International Conference on Renewable Energy Research and Applications (ICRERA), Palermo , Italy.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Enhanced control strategy of full-bridge modular multilevel converter

AU - Adam, G. P.

AU - Finney, S. J.

AU - Williams, B. W.

PY - 2015/11/22

Y1 - 2015/11/22

N2 - This paper describes a control approach that allows the cell capacitor voltages of the full-bridge modular multilevel converter (FB-MMC) to be controlled independent of the input dc link voltage. Moreover, this control approach offers the possibility of operating FB-MMC from bi-polar dc link voltages; thus, creating new possibilities for building generic hybrid dc grids with reversible dc link voltage, where the conventional line commutated current source converters can operate alongside voltage source converters. Furthermore, the presented control approach improves the dc fault ride-through of the FB-MMC compared to existing approaches. This could be achieved by an active control of the arm currents and cell capacitor voltages, and full exploitation of the FB-MMC redundant switch states. Operation of the FB-MMC with reversible DC link voltage and decoupled control of the cell capacitor voltages from the dc link voltage are demonstrated using simulations. The major findings and implications of this work are highlighted.

AB - This paper describes a control approach that allows the cell capacitor voltages of the full-bridge modular multilevel converter (FB-MMC) to be controlled independent of the input dc link voltage. Moreover, this control approach offers the possibility of operating FB-MMC from bi-polar dc link voltages; thus, creating new possibilities for building generic hybrid dc grids with reversible dc link voltage, where the conventional line commutated current source converters can operate alongside voltage source converters. Furthermore, the presented control approach improves the dc fault ride-through of the FB-MMC compared to existing approaches. This could be achieved by an active control of the arm currents and cell capacitor voltages, and full exploitation of the FB-MMC redundant switch states. Operation of the FB-MMC with reversible DC link voltage and decoupled control of the cell capacitor voltages from the dc link voltage are demonstrated using simulations. The major findings and implications of this work are highlighted.

KW - DC fault ride-through capability

KW - DC short circuit proof

KW - high-voltage DC transmission systems

KW - half and full bridge modular multilevel converters

KW - line commutated converter

KW - voltage control

KW - voltage measurement

KW - capacitors

KW - circuit faults

KW - modulation

UR - http://www.icrera.org/archieve2015/

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DO - 10.1109/ICRERA.2015.7418644

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Adam GP, Finney SJ, Williams BW. Enhanced control strategy of full-bridge modular multilevel converter. 2015. Paper presented at 2015 International Conference on Renewable Energy Research and Applications (ICRERA), Palermo , Italy. https://doi.org/10.1109/ICRERA.2015.7418644