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Title: Transient response of three-phase voltage-source converters under grid-side faults
Authors: Peng, Y
Sun, J
Huang, M
Zha, X
Xu, Z
Cui, X
Tse, CK 
Keywords: Power conversion
Circuit faults
Voltage control
Voltage fluctuations
Power grids
Transient analysis
Issue Date: 2015
Publisher: Institute of Electrical and Electronics Engineers
Source: 2015 IEEE Energy Conversion Congress and Exposition (ECCE), Montreal, QC, Canada, 20-24 Sept 2015, p.2728-2733 How to cite?
Abstract: Three-phase voltage-source converters (VSC) are commonly used as a power flow interface in AC/DC hybrid power systems. The system may suffer from unpredictable transient disturbance from DC-side or grid-side faults. The nonlinear characteristics of VSCs have already been identified as exhibiting catastrophic bifurcation when there is a DC-side disturbance. In this paper, the transient response of a three-phase VSC under practical grid fault condition is studied. The converter will also exhibit a catastrophic bifurcation after the transient disturbance. The expanded AC current will cause excessive devise stress. A large-signal analysis is adopted to reveal the physical origin of the phenomenon and to locate the boundary of the instability. The phenomenon and the stability boundaries are verified by cycle-by-cycle simulations.
ISBN: 978-1-4673-7151-3 (electronic)
978-1-4673-7150-6 (USB)
ISSN: 2329-3721
EISSN: 2329-3748
DOI: 10.1109/ECCE.2015.7310042
Appears in Collections:Conference Paper

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