Improved Low Voltage Ride-Through Capability of DFIG with ESO Controller under Unbalanced Network Conditions

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Vali Ali Akbar; HOSSEINI SEYED MOHAMMAD HASSAN; OLAMAEI JAVAD

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Journal Paper

Paper Information

Journal: Majlesi Journal of Electrical Engineering Year:2021 | Volume:15 | Issue:1 Page(s): 53-69

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Title

Improved Low Voltage Ride-Through Capability of DFIG with ESO Controller under Unbalanced Network Conditions

Author(s)

Vali Ali Akbar | HOSSEINI SEYED MOHAMMAD HASSAN | OLAMAEI JAVAD | Issue Writer Certificate

Keywords

DFIG

RSC

GSC

ESO

LVRT

FCL

Unbalanced grid

Abstract

Under Unbalanced grid condition, in a Doubly-Fed Induction Generator (DFIG), voltage, current, and flux of the stator become asymmetric. Therefore, active-reactive power and torque will be oscillating. In DFIG controlling Rotor Side Converter (RSC) aims to eliminate power and torque oscillations. However, simultaneous elimination of the power and torque oscillations is not possible. Also, Grid Side Converter (GSC) aims to regulate DC-Link voltage. In this paper, in order to regulate DC-Link voltage, an Extended State Observer (ESO) based on a Generalized Proportional-Integral (GPI) controller, is employed. In this controlling method, DC-Link voltage is controlled without measuring the GSC current, and due to using the GPI controller, the improved dynamic response is resistant against voltage changes, and the settling time is reduced. To improve the transient stability and Low Voltage Fault Ride Through (LVRT) capability of DFIG, Statistic Fault Current Limiter (S-FCL) and Magnetic Energy Storage Fault Current Limiter (MES-FCL) are proposed in this paper. The proposed FCL does not only limit the fault current but also fasten voltage recovery. The simulations are implemented by MATLAB software in the synchronous positive and negative sequence reference (d-q).

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APA: Copy

Vali, Ali Akbar, HOSSEINI, SEYED MOHAMMAD HASSAN, & OLAMAEI, JAVAD. (2021). Improved Low Voltage Ride-Through Capability of DFIG with ESO Controller under Unbalanced Network Conditions. MAJLESI JOURNAL OF ELECTRICAL ENGINEERING, 15(1), 53-69. SID. https://sid.ir/paper/777350/en

Vancouver: Copy

Vali Ali Akbar, HOSSEINI SEYED MOHAMMAD HASSAN, OLAMAEI JAVAD. Improved Low Voltage Ride-Through Capability of DFIG with ESO Controller under Unbalanced Network Conditions. MAJLESI JOURNAL OF ELECTRICAL ENGINEERING[Internet]. 2021;15(1):53-69. Available from: https://sid.ir/paper/777350/en

IEEE: Copy

Ali Akbar Vali, SEYED MOHAMMAD HASSAN HOSSEINI, and JAVAD OLAMAEI, “Improved Low Voltage Ride-Through Capability of DFIG with ESO Controller under Unbalanced Network Conditions,” MAJLESI JOURNAL OF ELECTRICAL ENGINEERING, vol. 15, no. 1, pp. 53–69, 2021, [Online]. Available: https://sid.ir/paper/777350/en

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