Title :
Research on the synchronization control strategy for microgrid inverter
Author :
Rongliang Shi ; Xing Zhang ; Haizhen Xu ; Fang Liu ; Wei Cao
Author_Institution :
Sch. of Electr. Eng. & Autom., Hefei Univ. of Technol., Hefei, China
Abstract :
The three-loop power virtual synchronous generator (VSG) control methods are commonly used in microgrid inverter (MGI) units to share the loads among the parallel MGI units. In order to achieve stable operation of the MGI units under paralleled or grid-connected mode, a droop synchronization controller is designed in this paper. The difference of phase and amplitude between different MGI units is detected and is used to calculate the output frequency and amplitude of the MGI. The control principle is introduced and the synchronization control block diagram is given. The simulation and experimental results verify that the proposed method is effective in achieving paralleled operation of the MGI units.
Keywords :
distributed power generation; invertors; power generation control; power grids; synchronous generators; VSG control method; amplitude calculation; droop synchronization controller design; grid-connected mode; microgrid inverter units; operation stability; output frequency calculation; parallel MGI units; synchronization control block diagram; three-loop power virtual synchronous generator control methods; Frequency control; Inverters; Microgrids; Switches; Synchronization; Synchronous generators; Voltage control; droop synchronization; grid-connected mode; microgrid inverter (MGI); paralleled mode; virtual synchronous generator (VSG);
Conference_Titel :
Electronics and Application Conference and Exposition (PEAC), 2014 International
Conference_Location :
Shanghai
DOI :
10.1109/PEAC.2014.7037856
