Results 41 to 50 of about 10,246 (263)

Suppression Strategy of Sub/Super-synchronous Oscillations in Doubly-Fed Wind Farm Based on SVG Additional Current Feedback Impedance Reshaping

Zhongguo dianli
Doubly-fed wind farm often interacts with the power grid, leading to sub/super-synchronous oscillations. To address the issue of limited adaptability in suppressing these oscillations using impedance reshaping methods, this paper proposes an impedance ...
Zejia WANG, Minxiao HAN, Yiwen FAN
doaj   +1 more source

Virtual Synchronous Generator Grid Connected Control Method Based on Virtual Impedance

Journal of Physics: Conference Series, 2019
The virtual synchronous generator technology is used to simulate the working principle of the synchronous generator, which provides the inertia and damping support for the power grid. At present, the measurement of the phase, amplitude and frequency of the virtual syn-chronous generator is used to measure the output voltage of the distributed ...
Bao-zhu Shao, Guan-feng Zhang, Jun-you Yang, Fei-fei Gao, Feng Sun, Qing-song Zhao   +5 more
openaire   +1 more source

Multimodal Mechanical Testing of Additively Manufactured Ti6Al4V Lattice Structures: Compression, Bending, and Fatigue

Advanced Engineering Materials, EarlyView.
In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart, Jonas Schmidt, Anastasiya Toenjes, Johanna Eisenträger   +3 more
wiley   +1 more source

Novel Virtual Synchronous Generation Control with Virtual Impedance

In recent years, the power industry has seen a significant uptick in renewable energy integration, including solar and wind farms, accompanied by energy storage systems. While this has increased overall generation capacity, it has also posed challenges to grid security and vulnerability.
Ambia, Mir Nahidul, Zhang, Yuchen, Meng, Ke, Al-Durra, Ahmed, Dong, Zhaoyang   +4 more
openaire   +2 more sources

A Topology Optimization Framework for the Inverse Design of Nonlinear Mechanical Metamaterials

Advanced Engineering Materials, EarlyView.
This work uses topology optimization to design unit cells for mechanical metamaterials with a prescribed nonlinear stress–strain response. The framework adds contact and postbuckling modeling to synthesize microstructures for three highly nonlinear responses, including pseudoductile behavior, monostable with snap‐through buckling, and bistable ...
Charlie Aveline, Matthew Santer, Robert Hewson   +2 more
wiley   +1 more source

Patterning the Void: Combining L‐Systems with Archimedean Tessellations as a Perspective for Tissue Engineering Scaffolds

Advanced Functional Materials, EarlyView.
This study introduces a novel multi‐scale scaffold design using L‐fractals arranged in Archimedean tessellations for tissue regeneration. Despite similar porosity, tiles display vastly different tensile responses (1–100 MPa) and deformation modes. In vitro experiments with hMSCs show geometry‐dependent growth and activity. Over 55 000 tile combinations
Maria Kalogeropoulou, Kenny A. van Kampen, Pierpaolo Fucile, Carlos Mota, Lorenzo Moroni   +4 more
wiley   +1 more source

Current limiting control method with adaptive virtual impedance for grid-forming STATCOM

Energy Reports, 2023
Current limiting is an important issue in the static synchronous compensator (STATCOM) with grid-forming (GFM) control. However, the conventional methods are difficult to deal with the application scenarios of different grid faults.
Zhichang Yang, Guoliang Zhao, Hongyang Yu   +2 more
doaj   +1 more source

Joint Control of Radiated and Surface Waves via Space‐Time Coding Metasurfaces

Advanced Functional Materials, EarlyView.
A unified space‐time coding metasurface platform enables simultaneous control of radiated and surface‐confined waves across multiple harmonics. Demonstrated functionalities include multi‐frequency beam shaping; surface‐wave excitation, and hybrid multiplexing.
Zihao Dai, Yi Ning Zheng, Lei Zhang, Xiao Qing Chen, Giuseppe Castaldi, Tie Jun Cui, Vincenzo Galdi   +6 more
wiley   +1 more source

Enhanced Power Decoupling Strategy for Virtual Synchronous Generator

IEEE Access, 2020
Power coupling caused by high impedance ratio and nonzero power angle is a crucial issue for virtual synchronous generator (VSG), which may result in output power error, slower power response and even invalid operation.
Mingxuan Li, Yue Wang, Yonghui Liu, Ningyi Xu, Sirui Shu, Wanjun Lei   +5 more
doaj   +1 more source

Motion Planning of Multiple Mobile Robots Using Virtual Impedance

Journal of Robotics and Mechatronics, 1993
This paper proposes a planning method for multiple mobile robot systems. It has two characteristics: (1) Each robot plans a path on its own, without any supervisor; (2) The concept of cooperative motion can be implemented. A two-layered hierarchy is defined for a scheme of individual path planning.
Tamio ARAI, Jun OTA
openaire   +2 more sources