TY - GEN
T1 - A novel frequency and voltage controller for parallel voltage source converters and synchronous generators coexisting in islanded microgrids
AU - Afshar, Zakaria
AU - Zadeh, Mahmoud Mollayousefi
AU - Bathaee, S. M.T.
AU - Mehrizi-Sani, Ali
AU - Guerrero, Josep M.
N1 - Publisher Copyright:
© 2020 IEEE.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/8
Y1 - 2020/8
N2 - In low-inertia microgrids (MGs), one of the major challenges is the large frequency drop in case of active load increment. There has been presented an appropriate approach to tackle this issue, which is the virtual synchronous generator (VSG) control method for inverters. This presented method, however, needs a phase-locked loop (PLL) to estimate the frequency of the power grid. This paper proposes a method for controlling the voltage source converters (VSCs), leading to a fast frequency restoration for the grid without using any PLL. Moreover, the proposed method eliminates the need for the secondary frequency control and voltage control loop of the synchronous generator (SG). In other words, the VSC is responsible for regulating the frequency of the grid and the load voltage. Simulation results show that the grid frequency is restored to its nominal value once the VSC is connected to the grid. In addition, thanks to the presence of VSC, the load voltage returns to its nominal value when a reactive load is connected to the load bus.
AB - In low-inertia microgrids (MGs), one of the major challenges is the large frequency drop in case of active load increment. There has been presented an appropriate approach to tackle this issue, which is the virtual synchronous generator (VSG) control method for inverters. This presented method, however, needs a phase-locked loop (PLL) to estimate the frequency of the power grid. This paper proposes a method for controlling the voltage source converters (VSCs), leading to a fast frequency restoration for the grid without using any PLL. Moreover, the proposed method eliminates the need for the secondary frequency control and voltage control loop of the synchronous generator (SG). In other words, the VSC is responsible for regulating the frequency of the grid and the load voltage. Simulation results show that the grid frequency is restored to its nominal value once the VSC is connected to the grid. In addition, thanks to the presence of VSC, the load voltage returns to its nominal value when a reactive load is connected to the load bus.
KW - Frequency and voltage control
KW - Microgrids
KW - Peak load
KW - Synchronous generator
UR - http://www.scopus.com/inward/record.url?scp=85098323440&partnerID=8YFLogxK
U2 - 10.1109/ICEE50131.2020.9261059
DO - 10.1109/ICEE50131.2020.9261059
M3 - Article in proceeding
AN - SCOPUS:85098323440
T3 - 2020 28th Iranian Conference on Electrical Engineering, ICEE 2020
SP - 1
EP - 7
BT - 2020 28th Iranian Conference on Electrical Engineering, ICEE 2020
PB - IEEE Signal Processing Society
T2 - 28th Iranian Conference on Electrical Engineering, ICEE 2020
Y2 - 4 August 2020 through 6 August 2020
ER -