Virtual impedance based parallel operation of multi-converters in low voltage microgrids

• Published in: 2013 2nd International Symposium on Instrumentation and Measurement, Sensor Network and Automation (IMSNA) pp. 1031 - 1036
• Main Authors: Xiao Hu, Xisheng Tang, Ningning Li, Guowei Zhang
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.12.2013
• Subjects: Accuracy; current sharing; Equivalent circuits; Harmonic analysis; Impedance; microgrid; Microgrids; nonlinear load; parallel-connected converters; Power harmonic filters; Reactive power; virtual impedance

Droop Control Method is effective to the parallel operation of multi-converters without communication system. However, in low voltage microgrids the line impedance is highly resistive, which results in the unbalances of load current sharing among the parallel-connected converters. In this paper, a v...