A Low-Voltage Ride-Through Technique for Grid-Connected Converters With Reduced Power Transistors Stress

With more and more distributed energy resources being installed in the utility grid, grid operators start imposing the low-voltage ride-through requirement on such systems to remain grid-connected and inject reactive and/or active current to support grid voltage during fault conditions. This paper p...

Full description

Saved in:
Bibliographic Details
Published inIEEE transactions on power electronics Vol. 31; no. 12; pp. 8562 - 8571
Main Authors Hsin-Chih Chen, Chia-Tse Lee, Po-Tai Cheng, Teodorescu, Remus, Blaabjerg, Frede
Format Journal Article
LanguageEnglish
Published New York IEEE 01.12.2016
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Active power ripple
Capacitors
Cutoff frequency
distributed energy resources (DERs)
Electric currents
grid-connected converter
low-voltage ride-through (LVRT)
Mathematical model
Power supply
Power system stability
Power transistors
Reliability
Transistors
Voltage fluctuations
Online AccessGet full text

Cover

More Information
Summary:With more and more distributed energy resources being installed in the utility grid, grid operators start imposing the low-voltage ride-through requirement on such systems to remain grid-connected and inject reactive and/or active current to support grid voltage during fault conditions. This paper proposes a positive and negative sequence current injection method to meet such requirement. In the meantime, the proposed method can reduce the second harmonic ripples in the dc link of the power converter without violating the peak current constraint of the power transistors. The long-term reliability of the converter system can thus be improved.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2016.2522511