Passivity-based synchronization stability analysis for power-electronic-interfaced distributed generations

Y Qi, H Deng, J Wang, Y Tang - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Distributed generations (DGs) have been increasingly employed in AC microgrids to provide
carbon-free power supply. To coordinate multiple DGs, careful attention must be paid to the …

A new hybrid control technique for operation of DC microgrid under islanded operating mode

V Mortezapour, S Golshannavaz… - … and Control of …, 2022 - ieeexplore.ieee.org
This study proposes a novel combined primary and secondary control approach for direct
current microgrids, specifically in islanded mode. In primary control, this approach …

A nonlinear controller design for power conversion units in islanded micro-grids using interconnection and damping assignment tracking control

SM Azimi, S Lotfifard - IEEE Transactions on Sustainable …, 2020 - ieeexplore.ieee.org
Conventional controllers for electronically interfaced distributed generators (EI-DGs) that
utilize droop controllers along with voltage/current proportional-Integral (PI) controllers …

A nonlinear supplementary controller for transient response improvement of distributed generations in micro-grids

A Mojallal, S Lotfifard, SM Azimi - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
This paper proposes a nonlinear supplementary controller for enhancing the transient
response of distributed generations (DGs) in micro-grids. The proposed supplementary …

Supplementary controller for seamless transitions between microgrids operation modes

SM Azimi, S Lotfifard - IEEE Transactions on Smart Grid, 2021 - ieeexplore.ieee.org
This article proposes a supplementary controller for inverter based distributed generations
(DGs) to damp out the power and frequency oscillations that may occur following the change …

Supplementary controller for inverter-based resources in weak power grids

SM Azimi, S Lotfifard - IEEE Transactions on Smart Grid, 2022 - ieeexplore.ieee.org
This paper proposes a supplementary controller to damp out the power and frequency
oscillations of inverter-based resources (IBRs) connected to weak power grids. The …

Adaptive interconnection and damping assignment passivity-based control of interlinking converter in hybrid AC/DC grids

SM Azimi, M Hamzeh - IEEE Systems Journal, 2020 - ieeexplore.ieee.org
In this article, a nonlinear adaptive control strategy is proposed for a power conversion
system (PCS) based on the interconnection and damping assignment passivity-based …

A robust nonlinear stabilizer as a controller for improving transient stability in micro-grids

SM Azimi, S Afsharnia - ISA transactions, 2017 - Elsevier
This paper proposes a parametric-Lyapunov approach to the design of a stabilizer aimed at
improving the transient stability of micro-grids (MGs). This strategy is applied to electronically …

Nonlinear observer-based robust passive control of doubly-fed induction generators for power system stability enhancement via energy reshaping

J Dong, S Li, S Wu, T He, B Yang, H Shu, J Yu - Energies, 2017 - mdpi.com
The large-scale penetration of wind power might lead to degradation of the power system
stability due to its inherent feature of randomness. Hence, proper control designs which can …

Stabilizer design for heterogeneous types of distributed generators in microgrids operating in a unified control mode

SM Azimi, S Afsharnia, S Lotfifard - IEEE Systems Journal, 2017 - ieeexplore.ieee.org
This paper proposes a stabilizer to suppress the large transients subsequent to
disconnection/reconnection of microgrids (MGs) that are controlled in a unified mode. In the …