A Novel Forbidden-Region-Based Stability Criterion in Modified Sequence-Domain for AC Grid-Converter System

作者：Zhou, Yi; Hu, Haitao^*; Yang, Jie; He, Zhengyou

来源：IEEE Transactions on Power Electronics, 2019, 34(4): 2988-2995.

DOI：10.1109/TPEL.2018.2869422

• AC grid-converter system
• forbidden region
• stability analysis

A novel forbidden-region-based criterion (N-FRBC) is proposed in modified sequence-domain for an ac grid-converter system. Compared with the forbidden-region-based criterion (FRBC) in dq-domain, the number of constraint conditions is reduced due to the mirror frequency symmetry of the impedance ratio matrix in modified sequence-domain. In addition, the improved forbidden region decreases the conservatism of the FRBC. Simulation and experimental results verify the effectiveness and correctness of the proposed N-FRBC in studying the stability issues of the ac grid-converter system.

• 出版日期2019-4
• 单位西南交通大学