Results 31 to 40 of about 5,225 (215)

Advances in Position‐Momentum Entanglement: A Versatile Tool for Quantum Technologies

open access: yesLaser &Photonics Reviews, EarlyView.
Position–momentum entanglement constitutes a high‐dimensional continuous‐variable resource in quantum optics. Recent advances in its generation, characterization, and control are reviewed, with emphasis on spontaneous parametric down‐conversion and modern measurement techniques.
Satyajeet Patil   +6 more
wiley   +1 more source

Innovative Matrix-Type AC-AC Solid-State Transformer Eliminating Ripple Power with Double-Grid Frequency

open access: yesEnergies
Single-phase solid-state transformers (SSTs) have the advantages of a compact structure, higher reliability, and multiple functions, and have been widely studied. However, bulky energy storage elements and inherent ripple power with double-grid frequency
Hui Wang   +3 more
doaj   +1 more source

Research on Serial VSC-LCC Hybrid HVdc Control Strategy and Filter Design Scheme

open access: yesEnergies, 2020
This paper investigated the characteristics of a novel type of hybrid high voltage direct current (HVdc) converter, which is composed by line commutated converter series with voltage source converter.
Fan Cheng, Lijun Xie, Zhibing Wang
doaj   +1 more source

Modelling and analysis of LCC‐HVDC converter station for harmonic coupling of AC/DC power grid during geomagnetic storm

open access: yesIET Power Electronics, 2023
In this paper, the problem of harmonic coupling between the converter transformer and the converter under the action of geomagnetically induced current (GIC) is proposed to be investigated.
Yang Peihong   +6 more
doaj   +1 more source

DC Side Impedance Modelling of an Actual Line Commutated Converter High Voltage Direct Current System and DC Resonance Characteristics

open access: yesHigh Voltage, EarlyView.
ABSTRACT The stability analysis of Line Commutated Converter High Voltage Direct Current (LCC‐HVDC) is of considerable engineering importance. Establishing its analytical mathematical model helps to analyse stability and the factors that affect stability of the system.
Juanjuan Wang   +6 more
wiley   +1 more source

Research on shutdown control strategy of hybrid DC system

open access: yesEnergy Reports, 2022
The hybrid DC system combined with line commutated converter (LCC) and hybrid modular multilevel converter (HY-MMC), which is named LCC-HY-MMC, has technical advantages and economy. Shutdown is a key problem that any DC system needs to face.
Feng Xu   +5 more
doaj   +1 more source

Online control of AC/AC converter based SHEPWM technique [PDF]

open access: yes, 2014
Conventional online control of AC/AC converter controlled by the selective harmonic elimination pulse width modulation technique (SHEPWM) is based on storing the offline calculated switching angle values in a form of lookup table.
Darwish, M, Hashem, GM
core   +1 more source

Fused Collapsing for Wide BVH Construction

open access: yesComputer Graphics Forum, EarlyView.
Abstract We propose a novel approach for constructing wide bounding volume hierarchies on the GPU by integrating a simple bottom‐up collapsing procedure within an existing binary bottom‐up BVH builder. Our approach directly constructs a wide BVH without traversing a temporary binary BVH as done by previous approaches and achieves 1.4 – 1.6 × lower ...
Wilhem Barbier, Mathias Paulin
wiley   +1 more source

PERFORMANCE EVALUATION OF LINE AND CAPACITOR COMMUTATED CONVERTER BASED HVDC SYSTEM IN SIMULINK ENVIRONMENT

open access: yesElectrica, 2008
Most of HVDC systems consist of line commutated converters. The demand of reactive power is supplied by filter or capacitor banks which are connected on the primary side of the converter transformer.
M. KHATIR   +4 more
doaj   +2 more sources

Efficiency evaluation of DC transmission system based on voltage source converter [PDF]

open access: yes, 2010
This paper discusses efficiency evaluation of DC transmission system based on voltage source converter. It was presented at the 5th IET International Conference on Power Electronics, Machines and Drives in April ...
Adam, Grain Philip   +2 more
core   +1 more source

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