Title :
Voltage and frequency control of inverters connected in parallel forming a micro-grid
Author :
Wu, Chunsheng ; Liao, Hua ; Yang, Zilong ; Wang, Yibo ; Xu, Honghua
Author_Institution :
Dept. of Renewable Energy Generation, IEE CAS, Beijing, China
Abstract :
The “communication mechanism” to realize the power share of grid-forming inverters is analyzed and a droop control method through active and reactive current is proposed in this paper. The control strategies of inverters connected in parallel forming a micro-grid are described in detail. The droop controller is divided into three units that are current (power) decoupling, the first-order inertia and droop control. From the point of synchronous generator, the design principles of first-order inertia constant and the droop coefficients are analyzed. Finally, simulation models are established in Simulink/Matlab and two prototypes with the capacity of 10kVA are established in laboratory. The simulation and experiment results verify the feasibility of the proposed method.
Keywords :
frequency control; invertors; power grids; power system control; voltage control; Matlab; Simulink; communication mechanism; connected in parallel forming a micro-grid; droop control method; droop controller; grid-forming inverters; inverters frequency control; inverters voltage control; reactive current; synchronous generator; Damping; Inverters; Safety; Droop Control; Inverter; Micro-grid; Parallel; Voltage and Frequency Control;
Conference_Titel :
Power System Technology (POWERCON), 2010 International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-5938-4
DOI :
10.1109/POWERCON.2010.5666413
