Results 81 to 90 of about 472,625 (280)

Embryonic cerebrospinal fluid pressure in fetal mice in utero: External factors pressurize the intraventricular space

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Previous experiments inducing leakage of embryonic cerebrospinal fluid (CSF) suggest the necessity of intraventricular CSF pressure (PCSF) for brain morphogenesis. Nevertheless, how embryonic PCSF occurs is unclear, especially in utero. Results Using a Landis water manometer, we measured PCSF in fetal mice isolated from the amniotic
Koichiro Tsujikawa   +2 more
wiley   +1 more source

Fault Diagnosis and Tolerant Control of Three-Level Neutral-Point Clamped Inverters in Motor Drives

open access: yesEnergies, 2020
This paper presents an extension theory-based assessment method to perform fault diagnosis for inverters in motor driving systems. First, a three-level neutral-point clamped (NPC) inverter is created using the PSIM software package to simulate faults for
Kuei-Hsiang Chao, Chen-Hou Ke
doaj   +1 more source

Potential neuroprotective and therapeutic agents and their mechanisms for irradiation‐induced brain injury

open access: yesIbrain, EarlyView.
In this review, agents such baicalein, troxerutin, epigallocatechin gallate, quercetin, melatonin, valproic acid, lithium, neurosteroid progesterone, as well as minocycline have been implicated as neuroprotective agents for irradiation‐induced neurological deficits. Also, agents such as glucocorticoids, methylphenidate, vitamin E, bisdemethoxycurcumin,
Seidu A. Richard   +2 more
wiley   +1 more source

A Novel Control Scheme for Traction Inverters in Electric Vehicles With an Optimal Efficiency Across the Entire Speed Range

open access: yesIEEE Access
In the context of the electric vehicle (EV) industry, multi-level inverters (MLIs) have garnered increasing attention due to their potential to harness the advantages of higher DC link voltages.
Yousefreza Jafarian Jelodar   +4 more
doaj   +1 more source

Multi-Step Predictive Current Control for NPC Grid-Connected Inverter

open access: yesIEEE Access, 2019
Aiming at improving the quality of output current when the inverter is connected to the grid, this paper proposes a control strategy of neutral point clamped (NPC) grid-connected inverter based on radial basis function neural network (RBFNN) multi-step ...
Yunjun Yu, Xianzheng Wang
doaj   +1 more source

A zero‐current‐transition soft‐switching technique for T‐type NPC three‐level inverter

open access: yesIET Power Electronics, 2023
Based on the commutation property of the T‐type neutral point clamped (T‐NPC) three‐level inverter, a novel zero‐current‐transition (ZCT) soft‐switching topology is proposed.
Jingyuan Yin, Xiuyuan Yao, Jinke Li
doaj   +1 more source

Multiple low frequency dual reference PWM control of a grid connected photovoltaic three phase NPC inverter with DC/DC boost converter [PDF]

open access: yes, 2014
In recent years, power demand of industrial applications has increased significantly reaching some megawatts. The use of multilevel converters for applications of medium and high powers is proposed as a solution to drawback semiconductor ...
Azoui Boubekeur, Mechouma Rabiaa
core   +1 more source

A three level NPC inverter fault detection and identification using voltage vector residual evaluation based on current path tracking method

open access: yese-Prime: Advances in Electrical Engineering, Electronics and Energy
This research describes open circuit detection and fault location for active 3-level NPC (neutral point clamped) inverter switches during normal and connected to the neutral point.
Selvakumar P, Muthukumaran G
doaj   +1 more source

Robust vector control of SynRM using a three-level NPC inverter [PDF]

open access: yesEPJ Web of Conferences
This research aims to evolve a robust vector command of a 3-phase synchronous reluctance motor (SynRM). The conventional 2-level inverter is replaced by a 3-level neutral-point-clamped (NPC) inverter.
Fahassa Chaymae   +2 more
doaj   +1 more source

NPC photovoltaic grid-connected inverter using proportional-resonant controller [PDF]

open access: yes2014 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 2014
Multi-megawatt photovoltaic (PV) power plants are widespread in electrical power systems because of the drastic decrease in the PV panel prices. The multi-string structure is considered for high power PV systems due to the increase in the overall energy conversion efficiency and the modularity when compared to the centralized topology.
Maswood, Ali Iftekhar   +4 more
openaire   +2 more sources

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