Open AccessInertial response analysis of PMSG‐based WECS with VSG control
Author(s) -
Xi Jiangbei,
Geng Hua,
Yang Geng,
Ma Shaokang
Publication year - 2017
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2017.0459
Subject(s) - control theory (sociology) , permanent magnet synchronous generator , inertial frame of reference , inertia , power (physics) , realisation , generator (circuit theory) , computer science , engineering , control (management) , physics , quantum mechanics , artificial intelligence , classical mechanics
The inertial response of permanent magnet synchronous generator (PMSG)‐based wind energy conversion system (WECS) with virtual synchronous generator (VSG) control (WECS‐VSG) is analysed in this paper. The differences between WECS‐VSG and synchronisation generator (SG) are focused. For SG, the input active power is constant during inertial response stage. However, due to the control coupling between VSG and the other control function of WECS, the VSG active power reference value will change during the same stage. In order to understand the problem physically, the effective inertia of the WECS‐VSG is deduced from the perspective of output equivalence. Based on the analyses of effective inertia, the authors know that the control coupling in WECS‐VSG will weaken the VSG inertial response ability. Therefore it is a must to improve the WECS‐VGS control realisation in the future study. All the analyses in this paper are verified by simulation results.