Voltage Stability Analysis and Sliding-Mode Control Method for Rectifier in DC Systems With Constant Power Loads

被引：50

作者：

Zhang, Mingmin ^{[1
]}

Li, Yong ^{[1
]}

Liu, Fang ^{[2
]}

Luo, Longfu ^{[1
]}

Cao, Yijia ^{[1
]}

Shahidehpour, Mohammad ^{[3
]}

机构：

[1] Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Hunan, Peoples R China

[2] Cent S Univ, Sch Informat Sci & Engn, Changsha 410083, Hunan, Peoples R China

[3] IIT, Galvin Ctr Elect Innovat, Chicago, IL 60616 USA

来源：

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS | 2017年 / 5卷 / 04期

关键词：

Constant power load (CPL); converter; sliding-mode control; voltage stability; BUCK CONVERTER; FREQUENCY; DESIGN; STABILIZATION; DEFINITION;

D O I：

10.1109/JESTPE.2017.2723482

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：

Voltage stability draws more and more attentions in dc systems due to the high penetration of constant power loads. This paper gives comprehensive analysis for the voltage stability and proposes a sliding-mode control method to enhance the voltage stability margin of dc systems. First, by the impedance-based stability analysis approach, the voltage stability of the three-phase rectifier serving as the source converter is examined when interacted with tightly regulated load converter. The dynamic input characteristics of the load side converter are investigated to find the relationship between the negative incremental impedance and the output power of the load converter. Second, a new sliding-mode control method is proposed to achieve the large-signal stability. Lyapunov function is used to ensure the stability of the proposed controller. Finally, the effectiveness of the proposed control method is verified by simulation results.

引用

页码：1621 / 1630

页数：10

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