Open AccessInjecting positive‐sequence current virtual synchronous generator control under unbalanced grid
Author(s) -
Zheng Xuemei,
Wang Chao,
Pang Songnan
Publication year - 2019
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
eISSN - 1752-1424
pISSN - 1752-1416
DOI - 10.1049/iet-rpg.2018.5047
Subject(s) - sequence (biology) , matlab , generator (circuit theory) , computer science , current (fluid) , control theory (sociology) , reliability (semiconductor) , grid , distortion (music) , voltage , control (management) , power (physics) , engineering , electrical engineering , mathematics , telecommunications , bandwidth (computing) , chemistry , artificial intelligence , physics , amplifier , geometry , quantum mechanics , operating system , biochemistry
For unbalanced three‐phase grid voltage, the traditional Virtual Synchronous Generator (VSG) control cannot overcome the distortion of output current. For this reason, a new control method is proposed in this study. The additional positive‐sequence current adjuster to the traditional VSG control allows the reference current to track the positive‐sequence current, and inhibit the negative‐sequence components. Meanwhile, the oscillations in the power system are decreased. The proposed method has been simulated using Matlab/Simulink and verified experimentally on actual platform. The reliability and effectiveness of the proposed control method have also been compared with the traditional VSG control.