Equivalent Circuit Model of Grid-Forming Converters With Circular Current Limiter for Transient Stability Analysis

This letter develops an equivalent circuit model of a grid-forming (GFM) converter with a circular current limiter and analyzes its transient stability. It is revealed that the inner control loop can be simplified as a voltage source behind an equivalent resistor. Based on the developed model, theor...

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Bibliographic Details
Published inIEEE transactions on power systems Vol. 37; no. 4; pp. 3141 - 3144
Main Authors Fan, Bo, Wang, Xiongfei
Format Journal Article
LanguageEnglish
Published New York IEEE 01.07.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Capacitors
Circuit stability
Circuits
circular current limiter
Converters
Current limiters
Equivalent circuit model
Equivalent circuits
grid-forming converter
Integrated circuit modeling
Power system stability
Stability analysis
Transient analysis
Transient stability
Voltage control
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ISSN0885-8950
1558-0679
DOI10.1109/TPWRS.2022.3173160

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Summary:This letter develops an equivalent circuit model of a grid-forming (GFM) converter with a circular current limiter and analyzes its transient stability. It is revealed that the inner control loop can be simplified as a voltage source behind an equivalent resistor. Based on the developed model, theoretical analysis and experimental tests demonstrate that the transient stability of a <inline-formula><tex-math notation="LaTeX">P-f</tex-math></inline-formula> droop-controlled GFM converter with the circular current limiter can be assured whenever there exist stable equilibrium points.
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ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2022.3173160