542 citations · 1.5k across the 65 of their papers we have counts for
10 papers · 1 filter
MIMO Grid Impedance Identification of Three-Phase Power Systems: Parametric vs. Nonparametric Approaches
Verena Häberle, Linbin Huang, Xiuqiang He +3
A fast and accurate grid impedance measurement of three-phase power systems is crucial for online assessment of power system stability and adaptive control of grid-connected conver…
Nonlinear Stability of Complex Droop Control in Converter-Based Power Systems
Xiuqiang He, Verena Häberle, Irina Subotić +1
In this letter, we study the nonlinear stability problem of converter-based power systems, where the converter dynamics are governed by a complex droop control. This complex droop…
Complex-Frequency Synchronization of Converter-Based Power Systems
Xiuqiang He, Verena Häberle, Florian Dörfler
In this paper, we study phase-amplitude multivariable dynamics in converter-based power systems from a complex-frequency perspective. Complex frequency represents the rate of chang…
Grid-Forming and Spatially Distributed Control Design of Dynamic Virtual Power Plants
Verena Häberle, Ali Tayyebi, Xiuqiang He +2
We present a novel grid-forming control design approach for dynamic virtual power plants (DVPP). We consider a group of heterogeneous grid-forming distributed energy resources (DER…
Transient Stability of Low-Inertia Power Systems with Inverter-Based Generation
Changjun He, Xiuqiang He, Hua Geng +2
This study examines the transient stability of low-inertia power systems with inverter-based generation (IBG) and proposes a sufficient stability criterion. In low-inertia grids, t…
Mode Clustering Based Dynamic Equivalent Modeling of Wind Farm for Small-Signal Stability Analysis
Xiuqiang He, Hua Geng, Geng Yang
Dynamic equivalent models (DEMs) are necessities for the small-signal stability (SSS) analysis of the power system with large-scale wind farms (WFs). This paper proposes a mode clu…
Transient Stability of Hybrid Power Systems Dominated by Different Types of Grid-Forming Devices
Xiuqiang He, Hua Geng
This paper investigates the transient stability of power systems co-dominated by different types of grid-forming (GFM) devices. Synchronous generators (SGs and VSGs) and droop-cont…
Synchronization Instability of Inverter-Based Generation During Asymmetrical Grid Faults
Xiuqiang He, Changjun He, Sisi Pan +2
The transient stability of traditional power systems is concerned with the ability of generators to stay synchronized with the positive-sequence voltage of the network, whether for…
Synchronization Stability Analysis and Enhancement of Grid-Tied Multi-Converter Systems
Xiuqiang He, Hua Geng
Synchronization instability of grid-tied converters during grid faults is a serious concern. For phase-locked loop (PLL) synchronized converters, synchronization stability during g…
Transient Stability of Power Systems Integrated With Inverter-Based Generation
Xiuqiang He, Hua Geng
The fundamental mechanism of transient stability of the conventional power system can be physically understood with the rotor swing dynamics of synchronous generators (SGs). The ba…