Results 11 to 20 of about 2,985 (187)

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

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

Speed Control of 6-Phase PMSM using Fuzzy Controllers [PDF]

open access: yesE3S Web of Conferences
the article introduces a method for controlling the speed of a six-phase permanent magnet synchronous motor (PMSM) drive with the help of fuzzy logic controllers (FLCs).
Ravikumar N.V.A.   +2 more
doaj   +1 more source

Multiobjective Optimization of PID Controller of PMSM [PDF]

open access: yesJournal of Control Science and Engineering, 2014
PID controller is used in most of the current-speed closed-loop control of permanent magnet synchronous motors (PMSM) servo system. However,Kp,Ki, andKdof PID are difficult to tune due to the multiple objectives. In order to obtain the optimal PID parameters, we adopt a NSGA-II to optimize the PID parameters in this paper.
Qingyang Xu   +3 more
openaire   +3 more sources

Permanent Magnet Synchronous Motors (PMSM). Parameters influence on the synchronization Process of a PMSM [PDF]

open access: yesRE&PQJ
This   paper    deals    with    the   finite    element estimation  of  cogging  torque  oscillations  that  occur  in  multi-pole permanent magnets synchronous wind generators.  The  numerical analysis  is  carried  out  using a  2D  plane-parallel finite  element  model  of  the  machine  and  afterward  a  more elaborated  3D  model  able  to  take
null T. Tudorache   +3 more
openaire   +2 more sources

Control of PMSM chaos using backstepping-based adaptive fuzzy method in the presence of uncertainty and disturbance

open access: yesSystems Science & Control Engineering, 2021
This paper presents a novel nonlinear control strategy based on a backstepping fuzzy adaptive approach to avoid chaos in a synchronous motor. In the controller design and stability proof, the parameter uncertainty and the system disturbance are taken ...
Jie Zhang   +4 more
doaj   +1 more source

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

Study of Excitation Characteristics of Traction Machine/Drive Systems

open access: yesEnergies, 2019
In order to accurately evaluate the performance of a traction machine/drive system, it is necessary to have an accurate excitation source which considers current harmonics.
Wenying Jiang, Qiqi Guo, Zhen Zhang
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

A Combined Methodology of H∞ Fuzzy Tracking Control and Virtual Reference Model for a PMSM

open access: yesAdvances in Electrical and Electronic Engineering, 2015
The aim of this paper is to present a new fuzzy tracking strategy for a permanent magnet synchronous machine (PMSM) by using Takagi-Sugeno models (T-S).
Djamel Ounnas   +3 more
doaj   +1 more source

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