Stationary-Frame Grid-Forming Inverter Control Architectures for Unbalanced Fault-Current Limiting

Baeckeland, Nathan; Venkatramanan, D.; Kleemann, Michael; Dhople, Sairaj V.

doi:10.1109/tec.2022.3203656

Cited by 20 publications

(7 citation statements)

References 37 publications

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“…In addition, the impedance seen at the output of each inverter is usually different, so the output current of the inverters will be also different. To avoid this behaviour, an adaptive control based on a variable resistance R adapt ,i (t ) is adopted in [26][27][28][29]:…”

Section: Virtual Impedance-based Current Limiting Techniquesmentioning

confidence: 99%

“…In this case, the voltage control loop is responsible for enforcing the virtual impedance-based current limitation. Finally, the last control schemes are made up of techniques that combine solutions belonging to the first two control approaches [26][27][28][29]. From an implementation point of view, some of the above techniques are written in natural reference frame (abc) [18], in synchronous reference frame (dq) [19-21, 23, 24] or in stationary reference frame (αβ) [22,[25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

“…Finally, the last control schemes are made up of techniques that combine solutions belonging to the first two control approaches [26][27][28][29]. From an implementation point of view, some of the above techniques are written in natural reference frame (abc) [18], in synchronous reference frame (dq) [19-21, 23, 24] or in stationary reference frame (αβ) [22,[25][26][27][28][29]. All these controls make it possible to adequately limit the output current of grid-forming inverters in case of overcurrent.…”

Section: Introductionmentioning

confidence: 99%

“…All these controls make it possible to adequately limit the output current of grid-forming inverters in case of overcurrent. This work focuses on current limiting algorithms in the αβ frame due to their excellent dynamics in different scenarios, which is characterized by being fast and accurate [28,29].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Improving voltage imbalance in inverter‐based islanded microgrids during line‐to‐line short circuits

Castilla

Miret

Vicuña

et al. 2023

IET Power Electronics

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Line‐to‐line short circuits are the transient disturbances that cause the highest currents as well as the largest voltage imbalances in inverter‐based microgrids. This paper presents a control scheme for grid‐forming inverters in islanded microgrids that limits the current to a safe value during these types of short circuits while providing a lower voltage imbalance compared to state‐of‐the‐art current limiting techniques. This control scheme is based on reducing both the amplitude of the reference voltage with the maximum amplitude of the reference current and the instantaneous reference voltage with only the inductive component of the virtual impedance. The combination of these two control actions provides low voltage imbalance, as the theoretical and experimental studies reveal. This voltage imbalance improvement is the main contribution of this paper and is maintained when the microgrid supplies linear and non‐linear loads. In the theoretical study, the paper includes control design guidelines to satisfy static and dynamic specifications. The theoretical predictions are validated by means of experimental results measured in a laboratory microgrid. A practical performance comparison of current limiting techniques based on experimental tests is also reported.

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Section: Virtual Impedance-based Current Limiting Techniquesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improving voltage imbalance in inverter‐based islanded microgrids during line‐to‐line short circuits

Castilla

Miret

Vicuña

et al. 2023

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…On top of the small-signal stability, control of GFM-VSC under large grid disturbances, including voltage sags, phaseangle jumps, high rate of change of frequency (RoCoF), and the combination thereof, is also of concern. Except for current limitation [8]- [10], GFM-VSCs should also remain synchronism with the grid (i.e., transient stability) during and H. Wu is with the AAU Energy, Aalborg University, 9220 Aalborg, Denmark (e-mail:, hew@energy.aau.dk).…”

Section: Iintroductionmentioning

confidence: 99%

Control of Grid-Forming VSCs: A Perspective of Adaptive Fast/Slow Internal Voltage Source

Wang

2023

IEEE Trans. Power Electron.

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Grid-forming control VSC-based including current limitation and re-synchronization functions to deal with symmetrical and asymmetrical faults

Qoria

Wang

Kadri

2023

Electric Power Systems Research

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Stationary-Frame Grid-Forming Inverter Control Architectures for Unbalanced Fault-Current Limiting

Cited by 20 publications

References 37 publications

Improving voltage imbalance in inverter‐based islanded microgrids during line‐to‐line short circuits

Improving voltage imbalance in inverter‐based islanded microgrids during line‐to‐line short circuits

Control of Grid-Forming VSCs: A Perspective of Adaptive Fast/Slow Internal Voltage Source

Grid-forming control VSC-based including current limitation and re-synchronization functions to deal with symmetrical and asymmetrical faults

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