Results 71 to 80 of about 40,902 (281)

High step‐up quasi‐Z‐source converter with full soft switching range, continuous input current and low auxiliary elements

open access: yesIET Power Electronics, 2023
This paper presents a fully soft switched high step‐up DC–DC converter based on quasi‐Z‐source converter. The voltage gain is boosted by combining coupled inductors and switched capacitor techniques.
Maryam Hajilou   +2 more
doaj   +1 more source

Engineering Deformation and Failure in Diamond Triply Periodic Minimal Surface Lattices via 3D Wall‐Thickness Grading

open access: yesAdvanced Engineering Materials, EarlyView.
The work demonstrates that strategic wall‐thickness grading in diamond triply periodic minimal surface lattices enables precise tuning of deformation and failure behavior under compression. Different gradation patterns guide how and where the structure collapses, improving energy absorption or promoting controlled brittle failure.
Giovanni Rizza   +3 more
wiley   +1 more source

Comparison of VSC and Z-source converter: power system application approach [PDF]

open access: yes, 2017
Application of equipment with power electronic converter interface such as distributed generation, FACTS and HVDC, is growing up intensively. On the other hand, various types of topologies have been proposed and each of them has some advantages ...
Kouhanjani, Masoud Jokar   +1 more
core   +2 more sources

A new soft‐switching multi‐input quasi‐Z‐source converter for hybrid sources systems

open access: yesIET Renewable Power Generation, 2021
This study focuses on a zero voltage transition multi‐input quasi‐Z‐source converter (qZSC). This topology can be used for input sources with different voltages and currents to provide a constant output voltage.
Amir Torki Harchegani   +2 more
doaj   +1 more source

Averaged Dynamic Modeling and Control of a Quasi-Z-Source Inverter for Wind Power Applications

open access: yesIEEE Access, 2021
Typically, permanent magnet synchronous generator (PMSG)-driven wind turbines (WTs) present a two-stage power converter topology based on a DC/DC boost converter and voltage source inverter.
Emanuel P. P. Soares-Ramos   +5 more
doaj   +1 more source

Organic Electrochemical Transistor Channel Materials: Copolymerization Versus Physical Mixing of Glycolated and Alkoxylated Polymers

open access: yesAdvanced Functional Materials, EarlyView.
This work discusses the use of blended channel materials in OECTs. It explores how mixing glycolated and alkoxylated polymers in various ratios offers a simpler and more efficient route to tuning OECT properties. The performance of the polymer blends is compared to the corresponding copolymers, demonstrating similar OECT characteristics, swelling ...
Lize Bynens   +14 more
wiley   +1 more source

Design and Development of Grid-connected Quasi-Z-Source PV Inverter [PDF]

open access: yes, 2018
An inverter system applied with the PV source typically has a problem of lower input voltage due to constraint in the PV strings connection. As a countermeasure a DC-DC boost converter is placed in between to achieve a higher voltage at the inverter DC ...
Azri, Maaspaliza   +4 more
core   +2 more sources

Improved vector selection model predictive control strategy for quasi‐Z‐source inverter virtual synchronous generator grid‐connected system

open access: yesThe Journal of Engineering
Conventional inverter control methods reduce the grid inertia and are susceptible to parameter variations, resulting in a gradual weakening of grid stability.
Zhun Cheng   +3 more
doaj   +1 more source

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

open access: yesAdvanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong   +16 more
wiley   +1 more source

New Multicell Switched-Inductor Quasi-Z-Source Inverter

open access: yesElectronics, 2023
To address the problems of quasi-Z-source inverters with limited boosting ability and high voltage stress, a novel class of multicell switched-inductor quasi-Z-source inverters is proposed. The new inverter is based on the quasi-Z-source inverter in which the inductors in the impedance source network are replaced by a multicell switched-inductors.
Renxi Gong   +3 more
openaire   +1 more source

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