LVRT Control Strategy for Asymmetric Faults of DFIG Based on Improved MPCC Method

Ding, Can; Chen, Yunwen; Nie, Taiping

doi:10.1109/access.2021.3135574

Cited by 7 publications

(4 citation statements)

References 25 publications

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“…An improved strategy based on model predictive current control (MPCC) under asymmetric grid faults is proposed. In this proposed structure, the problems of delay and computational volume, as well as the flux measurement of wind turbine during low voltage ride-through (LVRT), are solved [96]. Several studies have been conducted on symmetric and asymmetric faults for inverters and reliability of grids.…”

Section: Reliabilitymentioning

confidence: 99%

Review of Model Predictive Control of Distributed Energy Resources in Microgrids

et al. 2022

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In recent years, in response to increasing environmental concerns, advances in renewable energy technology and reduced costs have caused a significant increase in the penetration of distributed generation resources in distribution networks. Nonetheless, the connection of distributed generation resources to distribution networks has created new challenges in the control, operation, and management of network reliability. This article is a review on the model predictive control (MPC) for distributed energy resources (DER) in microgrids. The solutions of MPC for energy conversion of solar photovoltaic, wind, and energy storage systems are covered in detail. MPC’s applications for increasing reliability of grid-connected converters under (a)symmetrical grid faults are also discussed. The promising potentials of the applications of MPC to the stable multi-variable control performance of DERs are highlighted. This work reflects strong symmetry on MPC control strategies and provides guidance map for readers to facilitate future research works in these exciting fields.

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Section: Reliabilitymentioning

confidence: 99%

Review of Model Predictive Control of Distributed Energy Resources in Microgrids

et al. 2022

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“…Offshore wind energy is considered as an environmentally friendly alternative for energy production due to less installation constraints and higher energy harvesting efficiency. Although doubly fed induction generator (DFIG) is the most common technology among the existing generators for wind energy applications [1], assessment of wind turbines for large scale offshore applications implies that generator reliability in onshore applications is not enough for offshore use [2]. Besides, according to IEEE 1547 standard [3], the generation facilities need to stay connected during the voltage dips (i.e., low voltage ride through (LVRT)) which poses another operating complexity to DFIGs [4].…”

Section: Introductionmentioning

confidence: 99%

An Adaptive Series-Dynamic-Resistor-Based Protection Scheme for Brushless Doubly- Fed Induction Generator Under Asymmetrical Fault Conditions

Gholizadeh,

Ghasemkhani,

Tohidi

et al. 2024

IEEE Access

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Low-voltage ride-through (LVRT) is one of the most important criteria for integrating wind energy into the power grid. Based on grid connection codes, wind generators must remain connected during fault conditions. However, this requires a careful protection scheme design for addressing the successful ride through of the brushless doubly fed induction generator (BDFIG) during severe voltage dips. This paper proposes a comprehensive solution for enhancing the BDFIG ride through during asymmetrical faults. Furthermore, since the proposed solution is dependent on the type and severity of voltage dips, an updated harmonic resilient scheme is developed to detect the dip level and type of faults. Performance of the proposed protection scheme is investigated for further improvement of the brushless DFIG LVRT capability based on series dynamic resistor (SDR) circuit design in order to limit post-fault oscillations. With the proposed solution, the BDFIG can satisfy ride through requirements for severe voltage dip scenarios. The proposed framework which includes a voltage detection method, appropriate SDR value determination procedure, and SDR control circuit was implemented and validated with a coupled circuit model in MATLAB/Simulink for a BDFIG prototype.INDEX TERMS Brushless doubly fed induction generator, low voltage ride-through, series dynamic resistor, grid code, voltage dip detection.

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“…As for control strategies, the LVRT performance of the DFIG is improved by using differential feedforward control of the stator current (Huilan et al, 2021). In Xiao et al (2012) and Ding et al (2021), a current limitation method has been proposed by controlling the magnetic chain. Although it does not rely on hardware circuits, it involves complex magnetic chain observation and separation techniques that are difficult to implement and not highly adaptable.…”

Section: Introductionmentioning

confidence: 99%

Low voltage protection method of DFIG based on rotor-side double current limiting circuit

Yang,

Yuan,

Liu

et al. 2023

Front. Energy Res.

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A doubly fed induction generator (DFIG) configured for crowbar protection faces the following problems during low voltage ride through (LVRT): delayed input of crowbar protection and the difficulty in coordinating current limiting targets and DC voltage overrun with constant resistance rectification. A low voltage protection method of a DFIG based on a rotor-side double current limiting circuit is proposed. The rotor current characteristics during a fault are analyzed from a time domain perspective and used as a basis for resistance setting. The transient response characteristics of a resistive superconducting fault current limiter (RSFCL) are used for fast initial suppression of rotor currents. The adaptive crowbar resistance adjustment method is used to realize the coordinated consideration of current limiting and DC voltage non-overrun. The simulation results show that the proposed protection method effectively shortens the actual input time of the current limiting circuit and has good suppression ability for the rotor current at the early stage of fault. The adaptive and flexible resistance setting of the controllable crowbar circuit ensures that the DC voltage does not exceed the limit during the fault current limiting period, which helps improve the LVRT capability of doubly fed wind turbines.

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LVRT Control Strategy for Asymmetric Faults of DFIG Based on Improved MPCC Method

Abstract: Date of publication xxxx 00, 0000, date of current version xxxx 00, 0000.

Cited by 7 publications

References 25 publications

Review of Model Predictive Control of Distributed Energy Resources in Microgrids

Review of Model Predictive Control of Distributed Energy Resources in Microgrids

An Adaptive Series-Dynamic-Resistor-Based Protection Scheme for Brushless Doubly- Fed Induction Generator Under Asymmetrical Fault Conditions

Low voltage protection method of DFIG based on rotor-side double current limiting circuit

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