32 citations · 57 across the 6 of their papers we have counts for
7 papers
Unified Energy Function Tailored to Inverter-Based Resources with PI Controllers for Transient Stability Analysis
Yifan Zhang, Hsiao-Dong Chiang, Yitong Li +1
The increasing penetration of inverter-based resources (IBRs) has fundamentally altered the transient stability characteristics of modern power systems. IBRs typically rely on prop…
Large-Signal Stability of Power Systems with Mixtures of GFL, GFM and GSP Inverters
Yifan Zhang, Yaoxin Wang, Yunjie Gu +5
Grid-following (GFL) inverters have very different large-signal stability characteristics to synchronous generators, and convenient concepts such as the equal-area criterion and gl…
Mapping of Dynamics between Mechanical and Electrical Ports in SG-IBR Composite Grids
Yitong Li, Yunjie Gu, Timothy C. Green
Power grids are traditionally dominated by synchronous generators (SGs) but are currently undergoing a major transformation through the increasing integration of inverter-based res…
Revisiting Grid-Forming and Grid-Following Inverters: A Duality Theory
Yitong Li, Yunjie Gu, Timothy C. Green
Power electronic converters for integrating renewable energy resources into power systems can be divided into grid-forming and grid-following inverters. They possess certain simila…
Participation Analysis in Impedance Models: The Grey-Box Approach for Power System Stability
Yue Zhu, Yunjie Gu, Yitong Li +1
This paper develops a grey-box approach to small-signal stability analysis of complex power systems that facilitates root-cause tracing without requiring disclosure of the full det…
Impedance-Based Whole-System Modeling for a Composite Grid via Frame-Dynamics Embedding
Yunjie Gu, Yitong Li, Yue Zhu +1
The paper establishes a methodology to overcome the difficulty of dynamic frame alignment and system separation in impedance modeling of ac grids, and thereby enables impedance-bas…
Interpreting Frame Transformations as Diagonalization of Harmonic Transfer Functions
Yunjie Gu, Yitong Li, Timothy C. Green
Analysis of ac electrical systems can be performed via frame transformations in the time-domain or via harmonic transfer functions (HTFs) in the frequency-domain. The two approache…