Impedance Modeling and Stability Factor Assessment of Grid-connected Converters Based on Linear Active Disturbance Rejection Control

被引：13

作者：

Xu, Hailiang ^{[1
]}

Nie, Fei ^{[1
]}

Wang, Zhongxing ^{[1
]}

Wang, Shinan ^{[1
]}

Hu, Jiabing ^{[2
]}

机构：

[1] China Univ Petr East China, Coll New Energy, Qingdao, Peoples R China

[2] Huazhong Univ Sci & Technol, Coll Elect & Elect Engn, Wuhan 430074, Peoples R China

来源：

JOURNAL OF MODERN POWER SYSTEMS AND CLEAN ENERGY | 2021年 / 9卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Grid-connected converter; linear active disturbance rejection control (LADRC); sub- and super-synchronous oscillation; stability; LOAD CONVERTERS; INVERTER; SYSTEM; PLL;

D O I：

10.35833/MPCE.2021.000280

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：

With the increase of converter-based renewable energy generation connected into the power grid, the interaction between renewable energy and grid impedance has introduced lots of new issues, among which the sub- and super-synchronous oscillation phenomenon makes a big concern. The linear active disturbance rejection control (LADRC) is a potential way to improve the damping characteristics of the grid-connected system, but the key factors and influencing mechanism on system stability are unknown. This paper establishes the equivalent impedance and coupling admittance models of a typical three-phase grid-connected converter. Then, the influence of the key factors such as the bandwidth of the LADRC and grid impedance on the stability and frequency coupling effect is assessed in detail. Finally, the theoretical analysis results are verified by simulations and experiments.

引用

页码：1327 / 1338

页数：12

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