Results 31 to 40 of about 133,244 (304)

A Study on Neutral-Point Potential in Three-Level NPC Converters

open access: yesEnergies, 2019
This paper proposes an accurate mathematical model of three-level neutral-point-clamped (NPC) converters that can accurately represent the midpoint potential drift of the DC link with parameter perturbation.
Maosong Zhang   +6 more
doaj   +1 more source

Neutral-Point Voltage Balance Control of Three-Level Converter Based on Selection Method of Dynamical Adjustment for Small Voltage Vector

open access: yesApplied Sciences, 2021
The balance control of neutral-point voltage (NPV) is important in the three-level converter. In this paper, this problem is studied by taking the VIENNA circuit as an example.
Hongyan Zhao, Yan Li, Fei Lin, Yian Yan
doaj   +1 more source

Analysis of loss distribution for power devices of active neutral point clamped three-level inverter

open access: yesGong-kuang zidonghua, 2014
In view of problem of uneven loss distribution of power devices in running process of traditional neutral point clamped three level inverter, this paper introduced working principle and basic modulation strategy of active neutral point clamped three ...
ZHAO Xia   +4 more
doaj   +1 more source

Nonlinear Dynamics of Capacitive Charging and Desalination by Porous Electrodes

open access: yes, 2009
The rapid and efficient exchange of ions between porous electrodes and aqueous solutions is important in many applications, such as electrical energy storage by super-capacitors, water desalination and purification by capacitive deionization (or ...
A. Frumkin   +8 more
core   +2 more sources

Slowing and cooling molecules and neutral atoms by time-varying electric field gradients [PDF]

open access: yes, 1999
A method of slowing, accelerating, cooling, and bunching molecules and neutral atoms using time-varying electric field gradients is demonstrated with cesium atoms in a fountain. The effects are measured and found to be in agreement with calculation. Time-
A. Cable   +62 more
core   +2 more sources

Dexamethasone for Chemotherapy‐Induced Nausea and Vomiting Prevention in Pediatric Patients: International Consensus

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background An international Delphi panel of experts developed consensus statements to delineate the circumstances where the risks of dexamethasone as an antiemetic do and do not outweigh its benefits. Procedure Experts in supportive care of pediatric patients were invited to participate.
Negar Shavandi   +20 more
wiley   +1 more source

An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications [PDF]

open access: yes, 2018
Electrical starter/generator (ESG) system is one of the key innovations of more-electric aircraft initiative. The ESG cranks the engine and accelerates it up to self-sustained speed using electric energy (starter mode) and then runs as a generator to ...
Bozhko, Serhiy   +5 more
core  

The origin of switching noise in GaAs/AlGaAs lateral gated devices [PDF]

open access: yes, 2005
We have studied the origin of switching (telegraph) noise at low temperature in lateral quantum structures defined electrostatically in GaAs/AlGaAs heterostructures by surface gates.
A. R. Long   +12 more
core   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

A High-Power-Density Single-Phase Rectifier Based on Three-Level Neutral-Point Clamped Circuits

open access: yesEnergies, 2017
A single-phase three-level converter is suitable for medium-power applications, with an interface voltage that is higher than that of a traditional two-level configuration. The three-level neutral-point clamped converter is adopted using four switches in
Tao Zhou   +5 more
doaj   +1 more source

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