Results 71 to 80 of about 472,625 (280)

Comparative Evaluation of Efficiency and Reliability of Single-Phase Five-Level NPC Inverters for Photovoltaic Systems

open access: yesIEEE Access, 2021
It is required to reduce the cost of PV energy to be competitive as an alternative energy source. The efficiency and reliability of PV inverters are important aspects to be enhanced to reduce the cost of PV energy since they contribute to the reduction ...
Ui-Min Choi, Taerim Ryu
doaj   +1 more source

Investigation of Fault-Tolerant Capabilities in an Advanced Three-Level Active T-Type Converter [PDF]

open access: yes, 2019
A novel fault-tolerant three-level power converter topology, named advanced three-level active T-Type (A3L-ATT) converter, is introduced to increase the reliability of multilevel power converters used in safety-critical applications.
He, Jiangbiao   +2 more
core   +1 more source

A hybrid inverter system for medium voltage applications using a low voltage auxiliary CSI [PDF]

open access: yes, 2014
Hybrid converters consist of a main inverter processing the bulk of the power with poor waveform performance and a fast and versatile auxiliary inverter to correct the distortion. In this paper, the main converter is a medium voltage NPC inverter and the
Klumpner, Christian   +3 more
core   +1 more source

Unveiling a New Link: Cholesterol Deficiency in Smith–Lemli–Opitz and Niemann–Pick C as a Driver of Ciliopathies

open access: yesAmerican Journal of Medical Genetics Part A, EarlyView.
ABSTRACT The ciliopathies are a group of genetic disorders caused by defective function of either the primary cilia (a large number) or the motile cilia (a much smaller number). These have been defined as diseases with mutations in genes encoding individual ciliary or cilia‐associated proteins.
Robert P. Erickson   +1 more
wiley   +1 more source

Reinforced Droop for Active Current Sharing in Parallel NPC Inverter for Islanded AC Microgrid Application

open access: yesEnergies, 2019
The paper investigates the current sharing in parallel 3-level Neutral point clamped inverter for islanded AC microgrid application. In Distributed generation, parallel power electronic interface based microgrid suffers from power quality issues due to ...
Monica Purushotham, Kowsalya Muniswamy
doaj   +1 more source

Triangle Carrier-Based DPWM for Three-Level NPC Inverters [PDF]

open access: yesIEEE Journal of Emerging and Selected Topics in Power Electronics, 2018
This paper proposes a triangle carrier-based discontinuous pulsewidth modulation (TCB-DPWM) implement method for three-level neutral-point-clamped (3L-NPC) inverters. The function equivalent relationship of the proposed TCB-DPWM and space vector-based DPWM (SVB-DPWM) is mathematically analyzed in this paper.
Kai Li   +5 more
openaire   +2 more sources

Guidelines for Weighting Factors Adjustment in Finite State Model Predictive Control of Power Converters and Drives [PDF]

open access: yes, 2009
INTERNATIONAL CONFERENCE ON INDUSTRIAL TECHNOLOGY () (.2009.VICTORIA, AUSTRALIA)Model Predictive Control with a finite control set has emerged as a promising control tool for power converters and drives.
Cortés, Patricio   +7 more
core  

Impedance modeling and stability analysis of three-phase three-level NPC inverter connected to grid

open access: yesCSEE Journal of Power and Energy Systems, 2020
The interaction between grid-connected inverters and the grid may cause stability issues, and compromise the reliable operation of the inverters. This study investigates the stability of a three-level neutral point clamped (NPC) inverter connected to the
Bo Zhang   +4 more
semanticscholar   +1 more source

Techno‐economic and environmental assessment of a hybrid renewable energy system for a date molasses factory in Iraq using HOMER Pro

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Iraq currently faces a significant electricity deficit estimated at approximately 18 000 MW, resulting in frequent and sometimes prolonged power outages that disrupt both economic activities and social life. The widening gap between energy supply and demand, combined with environmental concerns associated with fossil fuel consumption ...
Safaa Malik Abbas   +3 more
wiley   +1 more source

Independent Upper- and Lower-Arm Switching Scheme Based on Reference Current Polarity for Three-Level NPC Inverters

open access: yesEnergies, 2021
This study presents a novel switching scheme for three-level neutral point clamped (NPC) inverters. The proposed switching method independently drives the upper- and lower-arm elements of the inverter based on the polarity information of the reference ...
Kangsoon Ahn   +3 more
doaj   +1 more source

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