Results 81 to 90 of about 58,304 (309)

Development of a DC-Side Direct Current Controlled Active Ripple Filter for Eliminating the Double-Line-Frequency Current Ripple in a Single-Phase DC/AC Conversion System

open access: yesEnergies, 2020
The objective of this paper is to propose an active ripple filter (ARF) using the patented DC-side direct current control for eliminating the double-line-frequency current ripple in a single-phase DC/AC conversion system. The proposed ARF and its control
Ying-Chieh Chen   +4 more
doaj   +1 more source

Line current ripple reduction of two paralleled three‐phase two‐level converter using optimized common‐mode voltage injections

open access: yesIET Power Electronics, 2021
This paper proposes a common‐mode voltage injection‐based pulse width modulation strategy to optimize the AC current ripple of parallel interleaved converters.
Shengfu Liu   +4 more
doaj   +1 more source

Very Low Power Cockcroft-Walton Voltage Multiplier for RF Energy Harvesting Applications [PDF]

open access: yes, 2019
A device was required that could harvest the electromagnetic energy present in ambient radio frequency (RF) signals. A part of this device must convert the AC RF signal received by the antenna into a DC signal that can be used in an embedded application.
Langdon, Trace
core   +2 more sources

A cascaded H-bridge BLDC drive incorporating battery management [PDF]

open access: yes, 2007
A multilevel BLDC drive is proposed using cascaded H-bridges with isolated sources to provide superior output waveforms and reduced current ripple whilst incorporating observer based SoC estimation.
Bingham, Chris   +3 more
core   +1 more source

Electric vehicle battery performance investigation based on real world current harmonics [PDF]

open access: yes, 2020
Electric vehicle (EV) powertrains consist of power electronic components as well as electric machines to manage the energy flow between different powertrain subsystems and to deliver the necessary torque and power requirements at the wheels.
Amamra, Sid-Ali   +4 more
core   +1 more source

Remote Assessment of Ataxia Severity in SCA3 Across Multiple Centers and Time Points

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Spinocerebellar ataxia type 3 (SCA3) is a genetically defined ataxia. The Scale for Assessment and Rating of Ataxia (SARA) is a clinician‐reported outcome that measures ataxia severity at a single time point. In its standard application, SARA fails to capture short‐term fluctuations, limiting its sensitivity in trials.
Marcus Grobe‐Einsler   +20 more
wiley   +1 more source

Optimal control of torque ripple for direct torque control system of mine hoist

open access: yesGong-kuang zidonghua, 2014
In view of problem of large torque ripple existed in low speed range of direct torque control system of mine hoist, an optimal control method of torque ripple for mine hoist was proposed.
WANG Zhen, CHEN Zhaolei, CAO Xiaodong
doaj   +1 more source

Estimation of Output Voltage Ripple in Phase-Staggered Series-Connected Two-Quadrant Power Converters for Electromagnets in Particle Accelerators

open access: yesPower Electronics and Drives, 2023
In booster synchrotron, fast-ramped power converters (FRPCs) are used for ramping up the magnetic field of electromagnets connected in series, at a fast rate, typically 1,000s of ampere per second.
Rohidas Pokharkar Rahul   +4 more
doaj   +1 more source

Comparative aspects in control strategies for hybrid DC-DC converters [PDF]

open access: yes, 2016
Linear-switching hybrid DC/DC converters consist of a voltage linear regulator (classic NPN or nMOS topologies and LDO) connected in parallel with a switching DC/DC converter.
Cosp Vilella, Jordi   +1 more
core   +3 more sources

A 73‐Year‐Old Man With Several Years of Difficulty Climbing Stairs and Frequent Tripping

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT A 73‐year‐old man presented with progressive weakness and atrophy predominantly affecting the distal finger flexors and quadriceps muscles. Electrophysiological studies demonstrated mixed myogenic and neurogenic features. Muscle MRI showed inflammatory changes, and muscle biopsy revealed granulomatous myositis with histologic features ...
Mehmet Can Sari   +3 more
wiley   +1 more source

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