Results 71 to 80 of about 1,114,983 (242)
Design and Performance Evaluation of a Hybrid Active Power Filter Controller
EnergiesThis paper introduces a novel hybrid filter topology that combines passive and active components to enhance harmonic filtering and resonance damping in electrical power systems.
Leopold Herman +2 more
doaj +1 more source
Mathematical models and simulations of phase noise in phase-locked loops [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2007 Phase noises in Phase-Locked Loops (PLLs) are a key parameter for communication systems that contribute the bit-rate-error of communication systems and cause synchronization problems.
Sethapong Limkumnerd +1 more
doaj
Laser‐Induced Graphene from Waste Almond Shells
Advanced Functional Materials, EarlyView.Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova +9 more
wiley +1 more source
Design of Passive Filter for Three-level Medium-voltage Converter
Kongzhi Yu Xinxi Jishu, 2015 Medium-voltage converters use long cable to connect the inverter to the motor side in middle and long distance pulse width modulation driving system, which brings some notable adverse effects simultaneously such as PWM pulse over-voltage and common mode ...
HUANG Yang, HU Jiaxi, MA Zhenyu, ZHU Wu
doaj
Sustainable Energy ResearchExcessive voltage harmonic distortion in distribution grids is a major power quality disturbance that negatively impacts micro-grids. The rise of contemporary industry and the expansion of power electronics in the grid contribute significantly to these ...
Ahmed Refaie Ali +4 more
doaj +1 more source
Advanced Functional Materials, EarlyView.ABSTRACT Chitosan, a polysaccharide upcycled from biowaste, has long promised sustainable, biocompatible, and antimicrobial films and devices, an appeal reinforced by its recent regulatory recognition, with several chitosan‐based antibacterial dressings gaining clearance through the Food and Drug Administration's 510(k) pathway.
Jacopo Nicoletti +16 more
wiley +1 more source
Advances in Sustainable and Wearable Textile Based Soft Robotics
Advanced Functional Materials, EarlyView.This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas +6 more
wiley +1 more source
Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies
Advanced Functional Materials, EarlyView.Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke +3 more
wiley +1 more source
Hybrid Filters To Damp Harmonic Resonance In Power Transmission Systems
Eletrônica de Potência, 2006 Problems related to harmonic propagation in transmission systems have been noticed in the last years. Passive filters, commonly used to attenuate noncharacteristic harmonics in HVDC systems, stay at risk of disconnection from the system due to ...
Lucas F. Encarnação +4 more
doaj +1 more source
LCL filter design for VSC-HVDC systems supplying passive grids [PDF]
, 2017 This paper presents an LCL passive filter design methodology for high voltage direct current systems based on voltage source converters (VSC-HVDC) connected to passive grids.
Machado Monaro, Renato +5 more
core +1 more source