Results 51 to 60 of about 5,218,776 (300)
Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines
Advanced Engineering Materials, EarlyView.Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl +4 more
wiley +1 more source
Virtual Inertia Implemented by Quasi-Z-Source Power Converter for Distributed Power System
Energies, 2023 This paper proposes a novel virtual inertia control strategy for distributed power systems with high penetration of renewable energy sources. The strategy uses a quasi-Z-source power converter to emulate the inertia response of a synchronous generator by
Yitao Liu, Hongle Chen, Runqiu Fang
doaj +1 more source
A new PWM Shoot-through control for voltage-fed quasi-z-source DC/DC converters
, 2017 This paper presents a new shoot-through control method applicable for an impedance source galvanically isolated DC/DC converter. In impedance source converters, the introduction of shoot-through states increases the switching speed of H-bridge switches ...
Yuba Raj Kafle +9 more
core +1 more source
Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading
Advanced Engineering Materials, EarlyView.The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley +1 more source
Quasi-Z-Source three-phase rectifier modelling and control [PDF]
, 2013 Dissertation (MEng (Electrical Engineering))--University of Pretoria, 2013.AC to DC rectifiers are used as front-end interface in multiple applications with DC load or in inverter fed from line voltage.
core
A new soft‐switching multi‐input quasi‐Z‐source converter for hybrid sources systems
IET Renewable Power Generation, 2021 This study focuses on a zero voltage transition multi‐input quasi‐Z‐source converter (qZSC). This topology can be used for input sources with different voltages and currents to provide a constant output voltage.
Amir Torki Harchegani +2 more
doaj +1 more source
Enhanced Performance Bidirectional Quasi-Z-Source Inverter Controller [PDF]
, 2015 A novel direct control of high performance bidirectional quasi-Z-source inverter (HPB-QZSI), with optimized controllable shoot-through insertion, to improve the voltage gain, efficiency and to reduce total harmonic distortion is investigated.The main ...
Latifi, Hojjat
core +1 more source
Advanced Engineering Materials, EarlyView.The temperature dependence of fatigue behavior in nickel‐based superalloys is investigated through high‐resolution measurements of plastic localization. While increasing temperature reduces localization and enhances fatigue performance in René 88DT, Inconel 718 exhibits a sharp degradation at intermediate temperature due to intensified slip ...
M. Calvat +5 more
wiley +1 more source
Cascadable Enhanced Quasi‐Z‐Source Inverter with Reduced Current Stress
IET Power ElectronicsIn magnetically coupled impedance source (MCIS) inverters, the turn ratio of the coupled inductor offers design flexibility. The leakage inductance, however, poses additional challenges, mainly voltage spikes.
Ahmad Mahdave +3 more
doaj +1 more source
Modeling and Analysis of Quasi-Z Source IMC Converter Feeding PMSM Drive System
Tikrit Journal of Engineering SciencesThe purpose of this study is to increase the voltage gain (U_g) for a quasi-Z-source indirect matrix converter (IMC) feeding a three-phase Permanent Magnet Synchronous machine (PMSM) drive system.
Ahmed K. Hannan +4 more
doaj +1 more source