Control Strategy for Dynamic Voltage Restorer Under Distorted and Unbalanced Voltage Conditions

被引：5

作者：

Zhang, Sen ^{[1
]}

Zhao, Zhihong ^{[2
]}

Zhao, Jianfeng ^{[1
]}

Jin, Long ^{[1
]}

Wang, Hong ^{[1
]}

Sun, Haixiang ^{[1
]}

Liu, Kangli ^{[1
]}

Yang, Bin ^{[1
]}

机构：

[1] Southeast Univ, Sch Elect Engn, Nanjing, Jiangsu, Peoples R China

[2] Nanjing Univ Sci & Technol, Dept Elect Engn, Sch Automat, Nanjing, Jiangsu, Peoples R China

来源：

2019 IEEE INTERNATIONAL CONFERENCE ON INDUSTRIAL TECHNOLOGY (ICIT) | 2019年

基金：

中国国家自然科学基金;

关键词：

dynamic voltage restorer (DVR); LC resonance damping; load voltage distortion and unbalanced; optimal parameter design; SELECTIVE HARMONIC COMPENSATION; DVR;

D O I：

10.1109/ICIT.2019.8755165

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Under the condition where power grid voltage is unbalanced and distorted, dynamic voltage restorer (DVR) is used to compensate the negative sequence voltage and harmonic voltage. In this paper, a novel double closed-loop control strategy is presented. The outer voltage loop of the controller is based on proportional multi-resonant (PMR) controller, while the inner current loop is based on proportional controller. Parameter tuning of inner current loop is investigated and the optimal gain is obtained through root locus curve. This method can maximize the stability of current loop and effectively suppress LC resonance at the same time. Simulation and experimental tests show that the proposed control strategy significantly improves the output voltage quality of DVR.

引用

页码：411 / 416

页数：6

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