Dispatchable Virtual-oscillator-controlled Inverters with Current-limiting and MPPT Capabilities

Lu, Ming–Feng; Mallik, Rahul; Johnson, Brian; Dhople, Sairaj V.

doi:10.1109/ecce47101.2021.9595530

Cited by 12 publications

(6 citation statements)

References 18 publications

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“…The range of the proportional and integral gains of the current and the voltage controller is given as follows [10] 𝐾 𝑝𝑖 = 𝐿 𝑓 𝜔 𝑖 ; 𝐾 𝑖𝑖 = 𝑅 𝑓 𝜔 𝑖 (26)…”

Section: The Reactive Power Droop Characteristic Without and With Vir...mentioning

confidence: 99%

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Dynamic Voltage Stiffness Control Technique for a Virtual Oscillator based Grid-forming Controller

Ghosh¹,

Rajpurohit²,

Tummuru³

2022

Preprint

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Section: The Reactive Power Droop Characteristic Without and With Vir...mentioning

confidence: 99%

“…where 𝜔 𝑖 , 𝜔 𝑣 are the current and voltage loop bandwidth. The value of 𝜔 𝑖 , 𝜔 𝑣 are taken 2𝜋1500 rad/s and 2𝜋400 rad/s [10].…”

Section: The Reactive Power Droop Characteristic Without and With Vir...mentioning

confidence: 99%

Dynamic Voltage Stiffness Control Technique for a Virtual Oscillator based Grid-forming Controller

Ghosh¹,

Rajpurohit²,

Tummuru³

2022

Preprint

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“…The values of the known parameters are given in Table I. The system and control parameters are taken directly from standard references, [6] and [10].…”

Section: The Reactive Power Droop Characteristic Without and With Vir...mentioning

confidence: 99%

Dynamic Voltage Stiffness Control Technique for a Virtual Oscillator based Grid-forming Controller

Ghosh¹,

Rajpurohit²,

Tummuru³

2022

Preprint

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“…1. (b) a dispatchable VOC (d-VOC) is used with nested voltage and current control loops [21], [22]. The d-VOC provides continuous reference voltage and phase angle information.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, the control over the healthy phases should be affected as minimum as possible [35], [36]. The existing VOC based gridforming controller as presented in [21], [22] cannot provide satisfactory performance under unbalanced fault. A simulation study is presented in Section III where an existing VOC based grid-forming controller is used to ride through an unbalanced fault condition.…”

Section: Introductionmentioning

confidence: 99%

A New Virtual Oscillator-Based Grid-Forming Controller with Decoupled Control Over Individual Phases and Improved Performance of Unbalanced Fault Ride-Through

Ghosh

Tummuru

Rajpurohit

2023

IEEE Trans. Ind. Electron.

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Virtual Oscillator (VO) control is the latest and promising control technique for grid-forming and grid-supporting inverters. VO Controllers (VOCs) provide time-domain synchronization with a connected electrical network. At the same time, a VOC can incorporate additional nested control loops for meets the system-level requirements such as fault ride-through capability. However, existing VOCs have two limitations. Firstly, the existing VOC does not have decoupled control over individual phases. As a result, the performance of the existing VOC is not satisfactory in presence of unbalanced grid voltages. Secondly, the fault ride-through performance of the existing VOC under an unbalanced fault is not satisfactory. The power delivery at a healthy phase gets affected by the faulty phase. This paper has introduced a modified VO based system-level controller to overcome the limitations mentioned above. Systematic development of the proposed control architecture with analytical reasoning is presented. Simulation studies and hardware experiments are conducted for validation.

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Dispatchable Virtual-oscillator-controlled Inverters with Current-limiting and MPPT Capabilities

Cited by 12 publications

References 18 publications

Dynamic Voltage Stiffness Control Technique for a Virtual Oscillator based Grid-forming Controller

Dynamic Voltage Stiffness Control Technique for a Virtual Oscillator based Grid-forming Controller

Dynamic Voltage Stiffness Control Technique for a Virtual Oscillator based Grid-forming Controller

A New Virtual Oscillator-Based Grid-Forming Controller with Decoupled Control Over Individual Phases and Improved Performance of Unbalanced Fault Ride-Through

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