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Virtual flux droop control with constant switching frequency for power sharing between parallel inverters in islanded microgrids

Version 2 2024-06-06, 10:40
Version 1 2019-10-01, 08:22
conference contribution
posted on 2024-06-06, 10:40 authored by S Khanabdal, M Banejad, F Blaabjerg, N Hosseinzadeh
Droop control method is a popular method for power sharing in islanded microgrids with parallel-connected inverters. Virtual flux droop control is a simple strategy based on the direct flux control (DFC) and hysteresis controllers, in which the active and the reactive powers are proportional to the phase angle and the amplitude of the virtual flux (integral of the output voltage of the inverter), respectively. However, because of the hysteresis controllers, it suffers from a drawback that is the variable switching frequency, which leads to the voltage and current ripples. In this paper, novel phase angle and virtual flux controllers with simple structure have been proposed which lead to a fixed switching frequency, while there is no need for the space vector modulation. Therefore, the ripples of voltage and current have been reduced. In order to evaluate the effectiveness of the proposed method, simulation studies have been carried out in Matlab/Simulink. The results show that the proposed controllers can reduce the voltage and power ripples, while the switching frequency has been fixed.

History

Pagination

868-874

Location

Yazd, Iran

Start date

2019-04-30

End date

2019-05-02

ISSN

2164-7054

eISSN

2642-9527

ISBN-13

9781728115085

Language

eng

Publication classification

E1.1 Full written paper - refereed

Copyright notice

2019, IEEE

Editor/Contributor(s)

[Unknown]

Title of proceedings

ICEE 2019 : Proceedings of the 27th Electrical Engineering Iranian Conference

Event

Electrical Engineering. Iranian Conference (27th : 2019 : Yazd, Iran

Publisher

IEEE

Place of publication

Piscataway, N.J.

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