Doubly Fed Induction Generator Low Voltage Ride Through Improvement Through Modular Multilevel Converter

被引：8

作者：

De Souza, Victor Ramon F. B. ^{[1
]}

Barros, Luciano S. ^{[2
]}

Costa, Flavio B. ^{[3
]}

da Silva Junior, Guilherme P. ^{[1
]}

机构：

[1] Fed Univ Rio Grande Norte UFRN, Grad Program Elect & Comp Engn, BR-59078970 Natal, RN, Brazil

[2] Fed Univ Paraiba UFPB, Comp Syst Dept, BR-58051900 Joao Pessoa, Paraiba, Brazil

[3] Michigan Technol Univ MTU, Elect & Comp Engn Dept, Houghton, MI 49931 USA

来源：

IEEE ACCESS | 2022年 / 10卷

关键词：

Doubly fed induction generators; Stators; Rotors; Capacitors; Switches; Fault currents; Impedance; Doubly fed induction generator; low voltage ride through; modular multilevel converter; fault current suppression; wind energy conversion systems; DFIG WIND TURBINE; OPERATION; CROWBAR;

D O I：

10.1109/ACCESS.2022.3178960

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper proposes a novel fault current suppression method for doubly fed induction generator (DFIG) low voltage ride through (LVRT) improvement employing modular multilevel converter (MMC). It is based on the inherent MMC arm impedance and the number of levels to provide transient damping of DFIG rotor and stator currents under severe grid faults, contributing effectively to maintaining the DFIG connection while ensuring controllability by avoiding the protection activation. Neither additional hardware nor control loops are necessary. DFIG dynamic equations under LVRT, including the contribution of the MMC, are presented, and a model is derived for control design. Performance assessment, including symmetrical and asymmetrical fault scenarios for MMC with 3, 21, 51, and 101 levels and comparison with existing and proposed controllers, highlighted that arm impedance and increased MMC level number contributed to DFIG stator and rotor fault current suppression, providing DFIG LVRT improvement under severe grid fault conditions.

引用

页码：57914 / 57929

页数：16

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