Steady-state performance of state-of-the-art modular multilevel and alternate arm converters with DC fault-blocking capability

D. Vozikis; G.P. Adam; P. Rault; D. Tzelepis; D. Holliday; S. Finney

doi:10.1016/j.ijepes.2018.01.054

Steady-state performance of state-of-the-art modular multilevel and alternate arm converters with DC fault-blocking capability

D. Vozikis, G.P. Adam, P. Rault, D. Tzelepis, D. Holliday, S. Finney

Electronic And Electrical Engineering

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

This paper presents a comparison of the steady-state behaviour of four state-of-the-art HVDC converters with DC fault-blocking capability, based on the modular multilevel and alternate arm converter topologies. AC and DC power quality, and semiconductor losses are compared, whilst considering different operating conditions and design parameters, such as the number of cells and component sizing. Such comparative studies have been performed using high-fidelity converter models which include detailed representation of the control systems, and of the converter thermal circuit. The main findings of this comprehensive comparison reveal that, the mixed cell modular converter offers the best design trade-off in terms of power losses and quality, and control range. Moreover, it has been established that the modular converter with a reduced number of cells per arm and with each cell rated at high voltage (i.e. 10-20 kV), tends to exhibit higher switching losses and relatively poor power quality at the DC side.

Language	English
Pages	618–629
Number of pages	12
Journal	International Journal of Electrical Power and Energy Systems
Volume	99
Early online date	20 Feb 2018
DOIs	10.1016/j.ijepes.2018.01.054
Publication status	Published - 31 Jul 2018

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Power quality

Topology

Semiconductor materials

Control systems

Networks (circuits)

Electric potential

Hot Temperature

Keywords

HVDC
power losses
power quality
converter modelling

Cite this

Vozikis, D., Adam, G. P., Rault, P., Tzelepis, D., Holliday, D., & Finney, S. (2018). Steady-state performance of state-of-the-art modular multilevel and alternate arm converters with DC fault-blocking capability. International Journal of Electrical Power and Energy Systems, 99, 618–629. https://doi.org/10.1016/j.ijepes.2018.01.054

Vozikis, D. ; Adam, G.P. ; Rault, P. ; Tzelepis, D. ; Holliday, D. ; Finney, S. / Steady-state performance of state-of-the-art modular multilevel and alternate arm converters with DC fault-blocking capability. In: International Journal of Electrical Power and Energy Systems. 2018 ; Vol. 99. pp. 618–629.

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title = "Steady-state performance of state-of-the-art modular multilevel and alternate arm converters with DC fault-blocking capability",

abstract = "This paper presents a comparison of the steady-state behaviour of four state-of-the-art HVDC converters with DC fault-blocking capability, based on the modular multilevel and alternate arm converter topologies. AC and DC power quality, and semiconductor losses are compared, whilst considering different operating conditions and design parameters, such as the number of cells and component sizing. Such comparative studies have been performed using high-fidelity converter models which include detailed representation of the control systems, and of the converter thermal circuit. The main findings of this comprehensive comparison reveal that, the mixed cell modular converter offers the best design trade-off in terms of power losses and quality, and control range. Moreover, it has been established that the modular converter with a reduced number of cells per arm and with each cell rated at high voltage (i.e. 10-20 kV), tends to exhibit higher switching losses and relatively poor power quality at the DC side.",

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Vozikis, D , Adam, GP, Rault, P, Tzelepis, D , Holliday, D & Finney, S 2018, 'Steady-state performance of state-of-the-art modular multilevel and alternate arm converters with DC fault-blocking capability' International Journal of Electrical Power and Energy Systems, vol. 99, pp. 618–629. https://doi.org/10.1016/j.ijepes.2018.01.054

Steady-state performance of state-of-the-art modular multilevel and alternate arm converters with DC fault-blocking capability. / Vozikis, D.; Adam, G.P.; Rault, P.; Tzelepis, D.; Holliday, D.; Finney, S.

In: International Journal of Electrical Power and Energy Systems, Vol. 99, 31.07.2018, p. 618–629.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Steady-state performance of state-of-the-art modular multilevel and alternate arm converters with DC fault-blocking capability

AU - Vozikis, D.

AU - Adam, G.P.

AU - Rault, P.

AU - Tzelepis, D.

AU - Holliday, D.

AU - Finney, S.

PY - 2018/7/31

Y1 - 2018/7/31

N2 - This paper presents a comparison of the steady-state behaviour of four state-of-the-art HVDC converters with DC fault-blocking capability, based on the modular multilevel and alternate arm converter topologies. AC and DC power quality, and semiconductor losses are compared, whilst considering different operating conditions and design parameters, such as the number of cells and component sizing. Such comparative studies have been performed using high-fidelity converter models which include detailed representation of the control systems, and of the converter thermal circuit. The main findings of this comprehensive comparison reveal that, the mixed cell modular converter offers the best design trade-off in terms of power losses and quality, and control range. Moreover, it has been established that the modular converter with a reduced number of cells per arm and with each cell rated at high voltage (i.e. 10-20 kV), tends to exhibit higher switching losses and relatively poor power quality at the DC side.

AB - This paper presents a comparison of the steady-state behaviour of four state-of-the-art HVDC converters with DC fault-blocking capability, based on the modular multilevel and alternate arm converter topologies. AC and DC power quality, and semiconductor losses are compared, whilst considering different operating conditions and design parameters, such as the number of cells and component sizing. Such comparative studies have been performed using high-fidelity converter models which include detailed representation of the control systems, and of the converter thermal circuit. The main findings of this comprehensive comparison reveal that, the mixed cell modular converter offers the best design trade-off in terms of power losses and quality, and control range. Moreover, it has been established that the modular converter with a reduced number of cells per arm and with each cell rated at high voltage (i.e. 10-20 kV), tends to exhibit higher switching losses and relatively poor power quality at the DC side.

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KW - power losses

KW - power quality

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