A DQ-Frame Asymmetrical Virtual Impedance Control for Enhancing Transient Stability of Grid-Forming Inverters

被引：40

作者：

Jin, Zheming ^{[1
]}

Wang, Xiongfei ^{[2
]}

机构：

[1] Beijing Jiaotong Univ, Sch Elect Engn, Beijing, Peoples R China

[2] Aalborg Univ, Dept Energy Technol, DK-9220 Aalborg, Denmark

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2022年 / 37卷 / 04期

关键词：

Inverters; Transient analysis; Power system stability; Stability criteria; Impedance; Voltage control; Circuit stability; Grid-forming (GFM) inverters; synchronous reference frame; transient stability; virtual impedance; POWER; ENHANCEMENT;

D O I：

10.1109/TPEL.2021.3124286

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：

This article proposes a dq-frame asymmetrical virtual impedance control scheme for preventing grid-forming (GFM) inverters from the loss of synchronization with the grid under large disturbances. The approach exploits the two degrees of freedom in the dq-frame virtual impedance synthesis of GFM inverters, and introduces a virtual transient impedance (VTI) scheme to improve the power transmission capability and, thus, restoring equilibrium points of GFM inverters during the large disturbances. The transient stability of GFM inverters with the different kinds of virtual impedance setting is analyzed to formulate the design guideline of VTI method. Simulations and experimental tests are presented to validate the effectiveness of the approach.

引用

页码：4535 / 4544

页数：10

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