Revisiting power systems time-domain simulation methods and models

JD Lara, R Henriquez-Auba… - … on Power systems, 2023 - ieeexplore.ieee.org
The changing nature of power systems dynamics is challenging present practices related to
modeling and study of system-level dynamic behavior. While develo** new techniques …

Large-signal stability analysis of three-phase grid-following inverters

D Pal, BK Panigrahi, B Johnson… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
This work analytically establishes a multi-variable energy function for a three-phase grid-
following inverter leveraging a unified equivalent-circuit model for its physical-and control …

Unified grid-forming/following inverter control

S Geng, IA Hiskens - IEEE Open Access Journal of Power and …, 2022 - ieeexplore.ieee.org
The paper describes an inverter control scheme which incorporates both a phase-locked
loop (PLL) for voltage synchronization and power-frequency droop for load sharing. As such …

A unified approach for learning the dynamics of power system generators and inverter-based resources

S Liu, W Cai, H Zhu, B Johnson - arxiv preprint arxiv:2409.14454, 2024 - arxiv.org
The growing prevalence of inverter-based resources (IBRs) for renewable energy
integration and electrification greatly challenges power system dynamic analysis. To …

Per-unit modeling via similarity transformation

D Venkatramanan, S Dhople - IEEE Transactions on Energy …, 2022 - ieeexplore.ieee.org
This paper presents an approach to normalize dynamical-system models into per-unit
transcriptions via similarity transformation. The method applies to nonlinear control-affine …

An Online-Optimization-Based High-Frequency Link Control of an MMC-Driven Power Electronic Transformer for Wind-Energy Systems

VN Vipin, D Venkatramanan… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Wide-scale grid integration of wind-energy renewable systems at the utility scale has
sparked interest in novel power-electronic architectures for the interface at medium-voltage …

Equivalent-circuit Models of Grid-forming IBRs for Electromagnetic-transient Simulations

N Baeckeland, T Ankner, S Dhople… - 2024 IEEE Power & …, 2024 - ieeexplore.ieee.org
We derive equivalent-circuit models of control-and physical-layer subsystems of grid-forming
(GFM) inverter-based resources (IBRs) for electromagnetic-transient (EMT) simulations …

Grid Forming Inverter as an Advanced Smart Inverter for Augmented Ancillary Services in a Low Inertia and a Weak Grid System Towards Grid Modernization

SS Rangarajan, ER Collins, T Senjyu - Clean Technologies, 2024 - search.proquest.com
Grid dynamics and control mechanisms have improved as smart grids have used more
inverter-based renewable energy resources (IBRs). Modern converter technologies try to …

Towards optimal primary-and secondary-control design for networks with generators and inverters

MK Singh, D Venkatramanan… - 2022 58th Annual …, 2022 - ieeexplore.ieee.org
For power grids predominantly featuring large synchronous generators (SGs), there exists a
significant body of work bridging optimization and control tasks. A generic workflow in such …

Sensitivity to Hopf Bifurcation in Grid-Following Inverters Using Normal Vector Methods

S Chatterjee, S Geng - 2024 60th Annual Allerton Conference …, 2024 - ieeexplore.ieee.org
With the increasing adoption of inverter-based resources (IBRs) in power systems,
oscillations have become a significant challenge for system operators worldwide. This paper …