Paper Info
Title
Seamless Mode Transition Technique for Virtual Synchronous Generators and Method Thereof
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.
Year
DOI
Venue
2020
10.1109/TII.2019.2954593
IEEE Transactions on Industrial Informatics
Keywords
DocType
Volume
Distributed generation (DG),islanding,power quality,phase-locked-loop (PLL),synchronisation,voltage source converter (VSC)
Journal
16
Issue
ISSN
Citations 
8
1551-3203
1
PageRank 
References 
Authors
0.35
0
3
Name
Order
Citations
PageRank
Vedantham Lakshmi Srinivas121.07
Bhim Singh2448113.14
Sukumar Mishra362.89