Results 21 to 30 of about 4,393 (194)
Performance Evaluation of Modulation Techniques in Single-Phase Dual Active Bridge Converters
IEEE Open Journal of the Industrial Electronics Society, 2021 This research presents a thorough comparison of different modulation techniques employed in dual active bridge (DAB) converters. The performance of a DAB converter is essentially affected by the modulation technique and the operating point, including ...
Negar Noroozi, Ali Emadi, Mehdi Narimani
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Energies, 2022 Modern low-voltage distribution systems necessitate solar photovoltaic (PV) penetration. One of the primary concerns with this grid-connected PV system is overloading due to reverse power flow, which degrades the life of distribution transformers.
Issah Babatunde Majeed, Nnamdi I. Nwulu
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Electronics, 2022 Electrowetting display (EWD) is one of the latest and most promising reflective displays. However, some defects are easily caused in a driving process. For example, the aperture ratio of pixels can be reduced due to oil splitting, and the grayscale cannot be stabilized due to charge trapping. These defects can be effectively solved by designing driving
Tian, Lixia +6 more
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Numerical study and experimental validation of a Roots blower with backflow design
Engineering Applications of Computational Fluid Mechanics, 2018 A three-dimensional computational fluid dynamics (CFD) model of a Roots blower with a backflow design was established to analyse the effects of the backflow on the Roots blower's performance.
Shu-Kai Sun +3 more
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Backflows In- And Feedback From Jet-Powered Agns
, 2016 During the propagation of a jet within the Interstellar medium of its host galaxy an expanding cavity filled with hot, turbulent gas forms, within which the jet itself propagates. We have performed a series of numerical experiments aiming at studying the large scale circulation within this jet-cocoon system. The gas advected by this backflow has a very
Antonuccio-Delogu, V. +3 more
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Case Studies in Thermal Engineering, 2019 Miller cycle makes the expansion ratio larger than effective compression ratio by early or late closing intake valves thereby improving the thermal efficiency of gasoline engines at the risk of power degradation.
Bin Chen +3 more
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A Boost CLLC Converter Controlled by PWM and PFM Hybrid Modulation for Photovoltaic Power Generation
IEEE Access, 2020 When an input terminal is connected to a solar panel with a low voltage level and large power range fluctuation, a Boost type CLLC converter controlled by fixed frequency pulse width modulation (PWM) reduces the utilization of PV electric energy, and the
Zhe Shi +3 more
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A Simulation Study of Ultra-relativistic Jets. III. Particle Acceleration in FR-II Jets
The Astrophysical Journal, 2023 We study the acceleration of ultra-high-energy cosmic rays (UHECRs) in Class II Fanaroff–Riley (FR-II) radio galaxies by performing Monte Carlo simulations for the transport, scattering, and energy change of CR particles injected into time-evolving jet ...
Jeongbhin Seo, Dongsu Ryu, Hyesung Kang
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Machines, 2022 The periodic flow and pressure pulsation of the axial piston pump can lead to periodic vibration, noise, and even damage to various components in the hydraulic system.
Zhiyuan Sun +3 more
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An Optimized Control Scheme to Reduce the Backflow Power and Peak Current in Dual Active Bridge Converters [PDF]
2019 IEEE Applied Power Electronics Conference and Exposition (APEC), 2019 An optimized switching control scheme to reduce the backflow power and the peak current of the dual active bridge converter is presented in this paper. Based on a triple-phase-shift modulation, the control scheme consists of operating the switching devices with three optimized control variables on the basis of achieving a decreased backflow power and ...
Liu, Bochen; id_orcid 0000-0001-7192-994X +2 more
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