TY - GEN
T1 - Virtual Flux Droop Control with Constant Switching Frequency for Power Sharing between Parallel Inverters in Islanded Microgrids
AU - Khanabdal, Saheb
AU - Banejad, Mahdi
AU - Blaabjerg, Frede
AU - Hosseinzadeh, Nasser
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/4
Y1 - 2019/4
N2 - 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.
AB - 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.
KW - droop control
KW - islanded microgrid
KW - power sharing
KW - virtual flux
UR - http://www.scopus.com/inward/record.url?scp=85070962304&partnerID=8YFLogxK
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U2 - 10.1109/IranianCEE.2019.8786594
DO - 10.1109/IranianCEE.2019.8786594
M3 - Conference contribution
AN - SCOPUS:85070962304
T3 - ICEE 2019 - 27th Iranian Conference on Electrical Engineering
SP - 868
EP - 874
BT - ICEE 2019 - 27th Iranian Conference on Electrical Engineering
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 27th Iranian Conference on Electrical Engineering, ICEE 2019
Y2 - 30 April 2019 through 2 May 2019
ER -
