Short-Circuit Fault Ride-Through of Flying-Capacitor Multilevel Converters through Rapid Fault Detection and Idle-mode Operation

Nathan Pallo; Mads Graungaard Taul; Andrew Stillwell; Robert C.N. Pilawa-Podgurski

doi:10.1109/COMPEL49091.2020.9265743

Short-Circuit Fault Ride-Through of Flying-Capacitor Multilevel Converters through Rapid Fault Detection and Idle-mode Operation

Nathan Pallo, Mads Graungaard Taul, Andrew Stillwell, Robert C.N. Pilawa-Podgurski

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Throughout the lifetime of a dc-ac converter, abnormal ac-side short-circuit conditions may occur as a result of external component failure, grid faults, or accumulation of moisture and dust. In such conditions, converter protection is needed. Compared to a two-level converter, which may be powered down if a fault is detected, the flying-capacitor multilevel converter cannot maintain voltage balance of the flying capacitors using such an approach. This paper therefore proposes methods for fault detection, and subsequent idle-mode fault ride-through, that protects the converter from device failures while supporting flying capacitor voltage balance. This method is experimentally verified under different operating conditions and various levels on a hardware prototype.

Original language	English (US)
Title of host publication	2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781728171609
DOIs	https://doi.org/10.1109/COMPEL49091.2020.9265743
State	Published - Nov 9 2020
Event	21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020 - Aalborg, Denmark Duration: Nov 9 2020 → Nov 12 2020

Publication series

Name	2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020

Conference

Conference	21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020
Country/Territory	Denmark
City	Aalborg
Period	11/9/20 → 11/12/20

ASJC Scopus subject areas

Control and Optimization
Modeling and Simulation
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Online availability

10.1109/COMPEL49091.2020.9265743

Library availability

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Cite this

Pallo, N., Taul, M. G., Stillwell, A., & Pilawa-Podgurski, R. C. N. (2020). Short-Circuit Fault Ride-Through of Flying-Capacitor Multilevel Converters through Rapid Fault Detection and Idle-mode Operation. In 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020 Article 9265743 (2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/COMPEL49091.2020.9265743

Short-Circuit Fault Ride-Through of Flying-Capacitor Multilevel Converters through Rapid Fault Detection and Idle-mode Operation. / Pallo, Nathan; Taul, Mads Graungaard; Stillwell, Andrew et al.
2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020. Institute of Electrical and Electronics Engineers Inc., 2020. 9265743 (2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Pallo, N, Taul, MG, Stillwell, A & Pilawa-Podgurski, RCN 2020, Short-Circuit Fault Ride-Through of Flying-Capacitor Multilevel Converters through Rapid Fault Detection and Idle-mode Operation. in 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020., 9265743, 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020, Institute of Electrical and Electronics Engineers Inc., 21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020, Aalborg, Denmark, 11/9/20. https://doi.org/10.1109/COMPEL49091.2020.9265743

Pallo N, Taul MG, Stillwell A, Pilawa-Podgurski RCN. Short-Circuit Fault Ride-Through of Flying-Capacitor Multilevel Converters through Rapid Fault Detection and Idle-mode Operation. In 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020. Institute of Electrical and Electronics Engineers Inc. 2020. 9265743. (2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020). doi: 10.1109/COMPEL49091.2020.9265743

Pallo, Nathan ; Taul, Mads Graungaard ; Stillwell, Andrew et al. / Short-Circuit Fault Ride-Through of Flying-Capacitor Multilevel Converters through Rapid Fault Detection and Idle-mode Operation. 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020. Institute of Electrical and Electronics Engineers Inc., 2020. (2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020).

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abstract = "Throughout the lifetime of a dc-ac converter, abnormal ac-side short-circuit conditions may occur as a result of external component failure, grid faults, or accumulation of moisture and dust. In such conditions, converter protection is needed. Compared to a two-level converter, which may be powered down if a fault is detected, the flying-capacitor multilevel converter cannot maintain voltage balance of the flying capacitors using such an approach. This paper therefore proposes methods for fault detection, and subsequent idle-mode fault ride-through, that protects the converter from device failures while supporting flying capacitor voltage balance. This method is experimentally verified under different operating conditions and various levels on a hardware prototype.",

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AB - Throughout the lifetime of a dc-ac converter, abnormal ac-side short-circuit conditions may occur as a result of external component failure, grid faults, or accumulation of moisture and dust. In such conditions, converter protection is needed. Compared to a two-level converter, which may be powered down if a fault is detected, the flying-capacitor multilevel converter cannot maintain voltage balance of the flying capacitors using such an approach. This paper therefore proposes methods for fault detection, and subsequent idle-mode fault ride-through, that protects the converter from device failures while supporting flying capacitor voltage balance. This method is experimentally verified under different operating conditions and various levels on a hardware prototype.

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Short-Circuit Fault Ride-Through of Flying-Capacitor Multilevel Converters through Rapid Fault Detection and Idle-mode Operation

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