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Seamless Mode Transition Technique for Virtual Synchronous Generators and Method Thereof.
- Source :
- IEEE Transactions on Industrial Informatics; Aug2020, Vol. 16 Issue 8, p5254-5266, 13p
- Publication Year :
- 2020
-
Abstract
- This article deals with a method for seamless transition of three-phase virtual synchronous generator, switched between off-grid and grid-interfaced modes and vice-versa. The proposed control strategy achieves two-fold advantages. First, it eliminates the need for synchronizing tools such as phase-locked-loops, and separate islanding detection techniques during unintentional islanding events; the controller is so formulated to adapt automatically during mode transitions, by inheriting synchronization and islanding detection tasks within itself. As a result, the controller does not require any control reconfiguration during mode transitions, unlike the conventional control methods. Second, it eliminates multiple feedback loops and the need for rigorous tuning of proportional-integral regulators in practical systems. In this method, only the inverter current and voltage sensors are used, and the control over grid-side static transfer switch is not mandatory. The mathematical formulation of the controller is depicted and the closed-loop stability of the system is analyzed using Eigen value stability analysis. The effectiveness of the control strategy is demonstrated through simulations and comparative analysis with the state-of-art control methods. Experimental results validate the performance of the system under different operating conditions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15513203
- Volume :
- 16
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Industrial Informatics
- Publication Type :
- Academic Journal
- Accession number :
- 143001073
- Full Text :
- https://doi.org/10.1109/TII.2019.2954593