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Large-Signal Stability Analysis of Three-Phase Grid-Following Inverters

IEEE Transactions on Energy Conversion
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-layer subsystems.
Diptak Pal   +4 more
openaire   +2 more sources

A Novel Design for Switchable Grid-Following and Grid-Forming Control

IEEE Transactions on Sustainable Energy
This paper presents the design of a novel grid-forming (GFM) control structure adapted from a typical grid-following (GFL) control structure with minimal edits, thereby enabling a switchable control structure for voltage sourced converters (VSCs) to ...
Huazhao Ding   +3 more
semanticscholar   +1 more source

Seamless Switching Method Between Grid-Following and Grid-Forming Control for Renewable Energy Conversion Systems

IEEE transactions on industry applications
In alignment with decarbonization efforts, there has been widespread global interest in renewable energy sources such as wind and solar, which are connected to the grid via grid-connected inverters.
Xian Gao   +3 more
semanticscholar   +1 more source

Multi-Objective Controller Design for Grid-Following Converters With Easy Transfer Reinforcement Learning

IEEE transactions on power electronics
This article proposes an easy transfer reinforcement learning method that combines easy transfer learning (ETL) with deep reinforcement learning (DRL) to adapt a multiobjective controller tailor-made for one grid-following converter to other converters ...
Yu Zeng   +5 more
semanticscholar   +1 more source

GRID-FOLLOWING THREE-PHASE INVERTER WITH RMS CURRENT-LIMITING PROPERTY

IET Conference Proceedings, 2021
A novel nonlinear controller that inherently limits the RMS value of a three-phase grid-following inverter current is presented in this paper. Using the dynamic model of the inverter in the rotating dq reference frame, a nonlinear control scheme is formulated to ensure accurate real and reactive power regulation with RMS current limitation that avoids ...
P. Skentzos, G. C. Konstantopoulos
openaire   +1 more source

Understanding a Type of Forced Oscillation in Grid-Forming and Grid-Following Inverter Connected Systems

IEEE transactions on power electronics
This article investigates a novel oscillation phenomenon in systems with grid-forming (GFM) and grid-following (GFL) inverters. Unlike previous studies that primarily focus on small-signal stability, this work explores forced oscillations (FOs), where ...
Song Chen   +5 more
semanticscholar   +1 more source

A Reference Frame Rematching Method for Enhancing Large-Signal Stability of Grid-Following Inverter Under Weak Grid

IEEE transactions on power electronics
The classical phase-locked loop (PLL)-based vector current control scheme has been widely used in grid-following (GFL) inverter systems. However, GFL inverters with this classical control scheme tend to be unstable under severe grid fault conditions ...
Liangwei Huang, F. Blaabjerg
semanticscholar   +1 more source

Comparison of Power Swing Characteristics and Efficacy Analysis of Impedance-Based Detections in Synchronous Generators and Grid-Following Systems

IEEE Transactions on Power Systems
This paper presents a theoretical comparison of power swing characteristics between conventional synchronous generator (SG)-based systems and grid-following-voltage source converter (GFL-VSC) systems.
Y. Xiong   +3 more
semanticscholar   +1 more source

Small Signal Synchronization Stability Analysis of Interconnected System Containing Grid-Forming and Grid-Following Converters From the Perspective of Dual-Axis Synchronous Generator

IEEE transactions on energy conversion
With the integration of large-scale renewable energy sources into the power grid, the interconnection between Grid-Forming (GFM) Voltage Source Converters (VSCs) and Grid-Following (GFL) VSCs has become a prominent trend in the power system.
Huanhai Xin   +5 more
semanticscholar   +1 more source

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