Research on Circulating Current Suppression for Parallel Operation of Inverters with Droop Control

doi:10.16628/j.cnki.2095-8188.2025.07.004

Abstract

Abstract:

In order to suppress the circulating current generated during the parallel operation of inverters with droop control.By analyzing the basic principle of traditional droop control and the defects of droop control technology with the introduction of virtual impedance,a control strategy adding an integral term into the reactive power adjustment link is proposed.Simulation results verify that the proposed strategy achieves reactive power the equal sharing among parallel inverters and has an obvious inbitory effect on the circulating currents in both transient and steady-state.

Key words: inverter, droop control, parallel operation, circulating current

CLC Number:

TM464

ZHAN Xiangxin, SUN Zhonghua, ZHAO Ye. Research on Circulating Current Suppression for Parallel Operation of Inverters with Droop Control[J]. LOW VOLTAGE APPARATUS, 2025, 0(7): 25-29.

Figures/Tables 10

References 15

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参数	数值	参数	数值
直流电压/V	400	工作频率/Hz	50
交流电压有效值/V	220	角频率/Hz	314
额定功率/W	5 000	额定负载/Ω	9.68
额定电流有效值/A	22.727 2	载波频率/Hz	2 000
系统效率	0.9	环流大小/A	>0.5