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- Title
Influence of control parameters on synchronization stability of virtual synchronous generator.
- Authors
YANXIA ZHANG; YACHAO CHENG; KAIXIANG LIU; YUE HAN
- Abstract
Different from the synchronization mechanism of synchronous generators, the non-synchronous generators must be synchronized with the grid through a controller. Generally, the virtual synchronous generator (VSG) control strategy is adopted for this purpose. In view of the current situation, where the control loops are not comprehensively considered in the research of the synchronization stability of the VSG, this paper considers multiple control loops, such as active frequency loops, virtual governors, power filters and current constraint control, to establish the mathematical model of the VSG and infinite system. On this basis, the correlation formula between power angle difference and control parameters is deduced. Adopting the phase plane method, the influence of different control loops and their parameters on the transient synchronization stability is analyzed. Finally, a setting principle of the frequency modulation coefficient of virtual governors is proposed, which not only meets the response speed of control systems, but also has good control performance. Key words: control parameters, frequency modulation coefficient, phase plane method, synchronization stability, virtual synchronous generator
- Subjects
SYNCHRONOUS generators; SYNCHRONIZATION; ELECTRIC power filters
- Publication
Archives of Electrical Engineering, 2022, Vol 71, Issue 4, p811
- ISSN
1427-4221
- Publication type
Article
- DOI
10.24425/aee.2022.142110