Results 21 to 30 of about 12,534 (231)

Cogging torque sensitivity considering imperfect magnet positioning for permanent magnet machines of different slot and pole count

open access: yesCES Transactions on Electrical Machines and Systems, 2020
This work is about analyzing surface mounted permanent magnet machines regarding their sensitiveness related to erroneous magnet positioning. A finite element analysis based approach is presented and different topologies in terms of slot and pole count ...
Gerd Bramerdorfer   +2 more
doaj   +1 more source

Universal System for Detection and Compensation of Current Sensor Faults in Three-Phase Power Electronic Systems

open access: yesPower Electronics and Drives, 2022
The article discusses the universal current sensor fault detection and compensation mechanism, which can be applied in three-phase power electronics (PE) symmetrical system.
Dybkowski Mateusz, Jankowska Kamila Anna
doaj   +1 more source

UMA SEQUÊNCIA DIDÁTICA PARA INTEGRAR SABERES AMBIENTAIS NOS SEXTOS ANOS DO ENSINO FUNDAMENTAL

open access: yesRevista Ensino de Geografia, 2019
No atual contexto, devem-se desenvolver propostas pedagógicas voltadas a Educação Ambiental, que conduzam aos estudantes a reflexões sobre o Planeta em que vivemos e a sua qualidade ambiental. Neste sentido, o presente trabalho teve como objetivo relatar
Natália Lampert Batista   +2 more
doaj   +1 more source

Ensino de Humanidades: O Percurso Geográfico e Histórico da Reforma Protestante

open access: yesRELACult, 2018
No ensino de humanidades, o constante contato com a Filosofia, a Arte, a Literatura, a História e a Geografia, o uso da imagem aliada ao texto renova a prática da indução e da reflexão do conhecimento.
Elsbeth Léia Spode Becker   +2 more
doaj   +1 more source

Fault Diagnosis of Bearings Based on SSWT, Bayes Optimisation and CNN

open access: yesPolish Maritime Research, 2023
Bearings are important components of rotating machinery and transmission systems, and are often damaged by wear, overload and shocks. Due to the low resolution of traditional time-frequency analysis for the diagnosis of bearing faults, a synchrosqueezed ...
Yan Guohua, Hu Yihuai, Shi Qingguo
doaj   +1 more source

PENSANDO A GLOBALIZAÇÃO COM ALUNOS DO ENSINO FUNDAMENTAL: UM RELATO DE PRÁTICA

open access: yesRevista Ensino de Geografia, 2018
O conteúdo programático do 8º ano, do Ensino Fundamental, da EMEF Junto ao CAIC Luizinho de Grandi, prevê a abordagem do tema Globalização como um elemento essencial do currículo escolar.
Natália Lampert Batista   +2 more
doaj   +1 more source

Comparative Study on Torque Performance of Five-phase Single-Stator and Double-Stator Permanent Magnet Synchronous Motors

open access: yesCES Transactions on Electrical Machines and Systems, 2022
This paper compares the torque characteristics of single stator permanent magnet synchronous motor(PMSM) and double-stator PMSM under different split-ratios, air-gap lengths and shaft diameters by finite element method.
Jing Zhao   +3 more
doaj   +1 more source

Analytical Optimal Currents for Multiphase PMSMs Under Fault Conditions and Saturation [PDF]

open access: yes, 2014
An original analytical expression is presented in this paper to obtain optimal currents minimizing the copper losses of a multi-phase Permanent Magnet Synchronous Motor (PMSM) under fault conditions.
NGUYEN, Ngac Ky   +8 more
core   +1 more source

Enhanced Torque Control of a PMSM Supplied by a Four-Leg Voltage Source Inverter Using the Third Harmonic [PDF]

open access: yes, 2008
This paper investigates an electrical drive composed of a four-leg voltage source inverter and a three-phase starconnected surface permanent magnet synchronous machine with concentrated windings. The inverter fourth leg is clamped to the neutral point of
Johan Gyselinck   +5 more
core   +1 more source

PMSM drive with adaptive state feedback speed controller [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2020
In this paper, the issue related to control of the plant with nonconstant parameters is addressed. In order to assure the unchanged response of the system, an adaptive state feedback speed controller for permanent magnet synchronous motor is proposed ...
R. Szczepanski   +2 more
doaj   +1 more source

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