Browsing NTNU Open by Author "Li, Zheng"

Now showing items 1-2 of 2

A coupled elastoplastic damage model for brittle rocks

Li, Zheng; Shou, Yundong; Guo, Deping; Berto, Filippo (Peer reviewed; Journal article, 2020)

Brittle rock contains an important plastic deformation, which causes microcracks when coupled with stress-induced damage. A new coupled elastoplastic damage model is established in order to discuss the damage behaviors ...
Properties and Physical Interpretation of the Dynamic Interactions between Voltage Source Converters and Grid: Electrical Oscillation and Its Stability Control

Zhang, Chen; Molinas Cabrera, Maria Marta; Rygg, Atle; Li, Zheng; Cai, Xu (Journal article; Peer reviewed, 2017)

Voltage source converters (VSCs) play an important role in the power conversion of renewable power generation (RPG) systems. Conventional power systems are considerably affected by power electronic devices in systems with ...