Stability analysis of droop control for inverter using dynamic phasors method

This paper use the dynamic phasors method to analyze the stability of droop control for inverter, and got the stability judge criterion, based on the analysis results, the virtual impedance is introduced to improve the stability of droop control. Comparing with the conventional method, it is more simple, clear and useful for the design of a stable droop controller. The simulation and experimental results are shown to verify this method.

[1]  Ronnie Belmans,et al.  Small-signal stability of grids with distributed low-inertia generators taking into account line phasor dynamics , 2005 .

[2]  J. Miret,et al.  Decentralized Control for Parallel Operation of Distributed Generation Inverters Using Resistive Output Impedance , 2005, IEEE Transactions on Industrial Electronics.

[3]  Ernane Antônio Alves Coelho,et al.  Small signal stability for parallel connected inverters in stand-alone AC supply systems , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[4]  Ernane Antônio Alves Coelho,et al.  Small signal stability for single phase inverter connected to stiff AC system , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).