Passivity Enhancement for Three-Phase Grid-Connected Inverter in dq-frame

被引：0
|
作者：
Peng, Ying [1 ]
Li, Kai [1 ]
Zhao, Jiancheng [1 ]
Xie, Chuan [1 ]
机构：
[1] Univ Elect Sci & Technol China, Chengdu, Sichuan, Peoples R China
来源：
2018 IEEE 4TH SOUTHERN POWER ELECTRONICS CONFERENCE (SPEC) | 2018年
基金：
中国国家自然科学基金;
关键词：
inverter; resonant; PLL; passivity; IMPEDANCE;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The non-passivity features of the grid-connected voltage-source inverter (VSI) may cause interaction resonance in the weak grid. Enhancing the passivity of VSI output admittance can reduce the risk of interaction resonance between VSI and power grid. With the increase of phase-locked loop (PLL) bandwidth, the passivity of VSI output admittance is worse. Besides, the dq-frame single current control is less robust than the alpha beta-frame current control against the effect of PLL bandwidth changes. This paper proposes a q-axis modulation voltage compensation strategy to enhance the passivity of q-axis admittance. With the proposed strategy, the VSI output admittance has non-negative real part within wide PLL bandwidth. The simulation and experiment results show the effectiveness of the proposed approach.
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页数：7
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