Phase Current Reconstruction for the Grid-Side Converter With Four-Switch Three-Phase Topology in a DFIG-WT

Ni, Kai; Li, Wei; Liu, Yang; Yu, Dongsheng; Hu, Yihua

doi:10.1109/access.2018.2853761

Cited by 5 publications

(1 citation statement)

References 36 publications

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“…Any reduction in the required current sensor count enables sensor fault‐tolerant operation. A current reconstruction methodology to reduce the number of sensors required in the control scheme is presented in [10]. The reconstruction of phase currents is performed through a high slew rate sensor measuring the current at DC terminals of the power converter.…”

Section: Introductionmentioning

confidence: 99%

Reduced sensor operation and power quality improvement in grid‐tied doubly fed induction generator using composite and twin frequency generalised integrators

Das

Puchalapalli

Singh

2021

IET Renewable Power Gen

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This study presents a strategy involving a reduction in the stator current sensor count for control of power converters, in a doubly fed induction generator (DFIG)‐based wind energy conversion system (WECS). The reduced sensor vector control scheme is effectively used in lieu of the conventional vector control algorithm during sensor failure without any change in the overall control structure. This keeps the system operational in case of sensor failure. The reduced sensor scheme necessitates precise estimation of stator flux amplitude and an orientation angle, for control of power converters under all operating conditions. A composite generalised integrator phase‐locked loop is presented to estimate accurately the stator flux amplitude and orientation angle, even at operating system irregularities such as unbalanced voltages, lower‐order harmonics in the grid voltage, DC bias in sensing circuitry, and so forth, which otherwise lead to distortions in flux and orientation angle. The grid‐side converter control is based on a twin frequency improved second‐order generalised integrator. It enables fast and accurate power quality improvement in DFIG‐based WECS during load and grid abnormalities. A laboratory prototype is developed to validate the control of the system.

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Section: Introductionmentioning

confidence: 99%

Reduced sensor operation and power quality improvement in grid‐tied doubly fed induction generator using composite and twin frequency generalised integrators

Das

Puchalapalli

Singh

2021

IET Renewable Power Gen

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Grid Ancillary Services From Doubly Fed Induction Generator-Based Wind Energy Conversion System: A Review

Debouza

Al‐Durra

2019

IEEE Access

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Modern electrical grids face serious challenges to maintain healthy operational conditions. The nominal voltage and frequency, for instance, are affected by huge load changes and renewable energy integration. Renewable energy conversion systems are traditionally installed to provide active power. Fortunately, advanced renewable energy conversion systems have the ability to provide other facilities such as reactive power control and harmonic mitigation. In fact, recent grid codes obligate renewable energy systems to serve other duties such as generating reactive power rather than just simply supply active power, participate in fault ride through, for instance. This paper presents a comprehensive study on the doubly fed induction generator (DFIG)-based wind energy conversion system (WECS), which provides ancillary services to the grid along with performing its regular duties. These services include reactive power control, voltage ride through, power quality improvement, frequency control, and power oscillation damping. The literature survey and comparative studies show that the DFIG-based WECS has the ability to support electrical grid during normal and transient conditions, and it can also help in the large-scale renewable energy penetration to the power grid. The effect of different industrial and nonlinear controllers on DFIG performance in extracting grid ancillary services is highlighted. INDEX TERMS Doubly fed induction generator (DFIG), frequency control, grid ancillary services, power oscillation damping, power quality improvement, reactive power control, voltage ride through, wind energy conversion system (WECS).

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A Modified Three-Phase Four-Switch Boost Rectifier With Two Inductors for Wind Energy Application Systems

Carolinne del Monego,

Göbel Fernandes,

Pontes

et al. 2024

IEEE Access

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Phase Current Reconstruction for the Grid-Side Converter With Four-Switch Three-Phase Topology in a DFIG-WT

Cited by 5 publications

References 36 publications

Reduced sensor operation and power quality improvement in grid‐tied doubly fed induction generator using composite and twin frequency generalised integrators

Reduced sensor operation and power quality improvement in grid‐tied doubly fed induction generator using composite and twin frequency generalised integrators

Grid Ancillary Services From Doubly Fed Induction Generator-Based Wind Energy Conversion System: A Review

A Modified Three-Phase Four-Switch Boost Rectifier With Two Inductors for Wind Energy Application Systems

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