Results 71 to 80 of about 290,345 (381)

A Fault-Tolerant T-Type Multilevel Inverter Topology with Soft-Switching Capability Based on Si and SiC Hybrid Phase Legs [PDF]

open access: yes, 2016
The performance of a novel three-phase four-leg fault-tolerant T-Type inverter topology is presented in this paper, which significantly improves the inverter\u27s fault-tolerant capability regarding device switch faults.
Demerdash, Nabeel   +4 more
core   +1 more source

A novel soft-switching double modulation converter (DMC) [PDF]

open access: yes, 1995
This paper introduces a new and simple power converter topology by which both the amplitude and the duty cycle are modulated to achieve soft switching characteristic in a standard half bridge configuration.
Ho, WC, Pong, MH, Poon, FNK
core   +1 more source

Adaptable Tile‐Based Pneumatic Origami through Structurally Coupled Localized Actuation

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents tile‐based pneumatic origami structures with rigid tiles and flexible fabric creases, achieving adaptable properties including morphing shape, selective multistability, and tunable stiffness. Independently pressurized folding bladders at each crease enable structurally coupled localized actuation of origami structures.
Tiantian Li, Jonathan Luntz, Diann Brei
wiley   +1 more source

Isolated High Step-Up Soft-Switching Quasi-Z-Source DC–DC Converter

open access: yesIEEE Access
The DC microgrid with energy storage cells has strong stability, simple control, and a convenient power supply for DC loads, increasingly becoming the grid-connected structure of distributed generation systems.
Guosheng Tian   +4 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

An optimized scheme for OLTCs of distribution transformers using flywheel motors

open access: yesZhejiang dianli
In the switching process of on-load tap changers (OLTCs) for distribution transformers, electric arcs are likely to occur at the contacts, which have an adverse impact on the service life and normal operation of the equipment.
LI Jiang, GUO Surong, LIU Bo
doaj   +1 more source

Modelling and regulation of dual-output LCLC resonant converters [PDF]

open access: yes, 2007
The analysis, design and control of 4th-order LCLC voltage-output series-parallel resonant converters (SPRCs) for the provision of multiple regulated outputs, is described.
Ang, Y   +3 more
core   +1 more source

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song   +4 more
wiley   +1 more source

Computer aided design of a crossing current resonant converter (XCRC) [PDF]

open access: yes, 1994
Computer aided design of the new Crossing Current Resonant Converter (XCRC) is introduced. The XCRC enables zero voltage switching without excessive voltage and current stresses. This makes the converter operate with minimum dissipation. A systematic way
Pong, MH, Poon, NK
core   +1 more source

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