6 papers
On Dimension-Varying Control Systems: A Universal State Space Approach
Feng Liu, Daizhan Cheng, Xiaoming Hu +1
This paper develops a unified framework for the analysis and design of dimension-varying control systems by constructing an intrinsic quotient state space, . A significant chal…
When Can Phasor-Domain Device Models Be Trusted for Electromechanical Stability Analysis of Grid-Forming Converter-Dominated Microgrids?
Zhongze Li, Xiaoyu Peng, Xi Ru +4
Grid-forming (GFM) converter-dominated microgrids are often analyzed using reduced-order phasor-domain electromechanical GFM models, but the validity of these models is often taken…
Quantifying Uncertainty in Space Debris Capture with Active Tether-Net Systems Caused by Noisy Observations
Feng Liu, Achira Boonrath, Eleonora M. Botta +1
As Low Earth Orbit has grown more crowded with space debris, the need for reliable and efficient debris removal solutions becomes more urgent. An active tether-net system with mane…
A Non-Iterative Algorithm for Clearing Two-Layer Energy-Sharing Markets with Voltage Constraints
Tonghua Liu, Yifan Su, Zhaojian Wang +1
Real-time hierarchical energy-sharing markets are promising to coordinate large numbers of prosumers. Still, most existing clearing methods rely on linearized or DC power-flow mode…
Extreme Scenario Characterization for High Renewable Energy Penetrated Power Systems over Long Time Scales
Kai Kang, Feng Liu, Yifan Su +1
Power systems with high renewable energy penetration are highly influenced by weather conditions, often facing significant challenges such as persistent power shortages and severe…
Optimal Control in Both Steady State and Transient Process with Unknown Disturbances
Ming Li, Zhaojian Wang, Feng Liu +2
The scheme of online optimization as a feedback controller is widely used to steer the states of a physical system to the optimal solution of a predefined optimization problem. Suc…