Results 81 to 90 of about 1,784,278 (287)

Machine Learning‐Supported Analysis for Predicting and Visualizing Nonlinear Relationships Between Material Properties in Electroplated Chromium Layers

Advanced Engineering Materials, EarlyView.
This study applies machine learning regression to predict chromium layer thickness in decorative trivalent chromium electroplating, using 441 experiments from laboratory‐scale (1L) and pilot‐scale (14L) setups. Tree‐based models, particularly CatBoost, outperformed linear regression by capturing nonlinear parameter interactions (R2$R^2$ up to 0.77 ...
Christoph Baumer, Christopher Mai, Luca Eisentraut, Andreas Bund, Ricardo Buettner   +4 more
wiley   +1 more source

Grid-Forming Fuel Cell System for an Islanded AC Grid

Eletrônica de Potência
This paper proposes a two-stage converter that can black start an isolated AC Microgrid with a Fuel Cell (FC) as the primary energy source. The first stage is connected to the FC and employs a Three-Leg Interleaved Boost DC/DC Converter (IBC), while the
João M. T. do Amaral, Janito S. Ramos, Carolina C. M. de Souza, Giulia J. da Silva, Emanuel L. van Emmerik, Robson F. S. Dias   +5 more
doaj   +1 more source

Control Strategy for Potential Vector Remolding Fault Ride-through in Grid-forming MMC [PDF]

Dianli jianshe
[Objective] The operational characteristics of the grid-forming modular multilevel converter （MMC） in offshore wind power transmission systems under short-circuit faults in the receiving-end grid are unclear， and the interaction mechanism between fault ...
FANG Chaoxiong, TANG Yuchen, LIN Yi, SHEN Hao, PAN Chao, BIAN Xiaoyan, ZHAO Jinbin
doaj   +1 more source

Grid-Forming Controller with Enhanced Disturbance Rejection

IEEE Journal of Emerging and Selected Topics in Power Electronics
Grid-forming (GFM) inverters, like synchronous generators (SGs), form voltage at their terminals and are considered crucial for enabling high renewable energy integration. Most GFM controllers mimic the power-synchronization characteristics of the SG rotor's swing dynamics to synchronize with the system. However, GFM inverters differ significantly from
Pranjal M. Gajare, Joseph Benzaquen, Deepak Divan   +2 more
openaire   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

Pole Slipping in Droop-Based Grid-Forming Inverters

IEEE Access
Integration of grid-forming inverter-based resources is considered as a viable solution to address the challenges associated with the dynamics of power systems with high penetration levels of inverter-based resources.
Negar Karimipour, Hansi Wijayalath Arachchilage, Amir Abiri Jahromi, Behrooz Bahrani, Mohammadreza F. M. Arani   +4 more
doaj   +1 more source

External and Internal Cracking Caused by Heat Treatment in Laser Powder Bed Fusion‐Fabricated Inconel 738LC Components

Advanced Engineering Materials, EarlyView.
Manufacturing problems such as heat treatment‐induced cracking hinder the widespread application of the laser powder bed fusion (LPBF) process to superalloys. In this study, cracks in the LPBF components of Inconel 738LC superalloy are characterized after heat treatment at various temperature ranges, revealing two distinct cracking behaviors.
Kosuke Kuwabara, Masahiro Kusano, Ayako Ikeda, Toshio Osada, Makoto Watanabe   +4 more
wiley   +1 more source

Dynamic Frequency Shaping of Grid-Following and Grid-Forming Inverters

IEEE Access
Compared with synchronous generators, inverter-based resources (IBRs) have distinct characteristics. This can challenge the reliability and stability of heterogeneous power grids comprising synchronous generators and IBRs.
Nathan Baeckeland, Bala Kameshwar Poolla, Andrey Bernstein, Gab-Su Seo   +3 more
doaj   +1 more source

Coordinated Control of Grid-Forming Wind Turbines and Grid-Forming Energy Storage Systems for Power System Restoration [PDF]

IEEE Transactions on Sustainable Energy
Grid-forming wind turbines (GFM-WTs) provide a promising solution for the restoration of wind-integrated power systems owing to their fast restart and grid support capabilities. However, individual GFM-WTs rely on external GFM sources for self-start, and their GFM support capability may be hindered by wind power shortages, potentially causing ...
Yuping Zhang, Yunyun Xie, Sheng Cai, Qiuwei Wu, Haobin Zhu, Zhengrong Xiang   +5 more
openaire   +1 more source

Enhancing Fatigue Crack Growth Resistance in Heterostructured Aluminum Bimetals by Tailored Interface Design

Advanced Engineering Materials, EarlyView.
Different Al/Al bimetals with a single engineered interface reveal how mechanical mismatch governs fatigue crack growth under cyclic loading. Additionally, loading–unloading–reloading tests link the microyielding behavior to the fatigue crack growth resistance, while crack‐path analysis reveals toughening mechanisms at the interface, highlighting ...
Sebastian Vollath, Philip Manuel Pohl, Heinz Werner Höppel   +2 more
wiley   +1 more source