Synchronous Instability Mechanism of P-f Droop-Controlled Voltage Source Converter Caused by Current Saturation
- 12 February 2016
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Systems
- Vol. 31 (6), 5206-5207
- https://doi.org/10.1109/tpwrs.2016.2521325
Abstract
Under large disturbances, P-f droop-controlled voltage source converters may lose synchronous stability, just like synchronous generator. Moreover, the current limitation leads to a more complicated instability mechanism and decreases stability margin greatly. This letter describes a virtual power angle instability problem and analyzes its mechanism from the virtual power angle characteristic curves of a converter with respect to an infinite bus. Simulation verifies the rationality of the analysis.Keywords
This publication has 4 references indexed in Scilit:
- Equivalence of Virtual Synchronous Machines and Frequency-Droops for Converter-Based MicroGridsIEEE Transactions on Smart Grid, 2013
- Synchronization and power sharing for droop-controlled inverters in islanded microgridsAutomatica, 2013
- Control of Power Converters in AC MicrogridsIEEE Transactions on Power Electronics, 2012
- Defining Control Strategies for MicroGrids Islanded OperationIEEE Transactions on Power Systems, 2006