Results 51 to 60 of about 1,482,768 (155)

Effects of manufacturing tolerances of permanent magnets in fractional slot permanent magnet synchronous machines

open access: yesThe Journal of Engineering, 2019
The fractional slot permanent magnet synchronous machines are well-known for their low torque ripple. However, in mass-production machines, not all the permanent magnets are identical due to the manufacturing tolerances and new torque harmonics could ...
Sergio Zarate   +5 more
doaj   +1 more source

Design and analysis of a new outer-rotor permanent-magnet flux-switching machine for electric vehicle propulsion

open access: yes, 2011
Purpose − The purpose of this paper is to propose a new outer-rotor permanent- magnet flux-switching machine for in-wheel electric vehicle propulsion.
Patrick Chi‐Kwong Luk   +7 more
core   +1 more source

A Self-Learning Solution for Torque Ripple Reduction for Non-Sinusoidal Permanent Magnet Motor Drives Based on Artificial Neural Networks [PDF]

open access: yes, 2013
This paper presents an original method, based on artificial neural networks, to reduce the torque ripple in a permanent-magnet non-sinusoidal synchronous motor.
WIRA, Patrick   +7 more
core   +1 more source

Impact of Permanent Magnet Field on Inductance Variation of a PMLSM [PDF]

open access: yes, 2007
Analytical models of Surface Mounted Permanent Magnet Linear Synchronous Motors are generally presented with constant inductances. However, the impact of powerful rare-earth PMs in the saturation phenomena cannot be neglected anymore.
REMY, Ghislain   +9 more
core   +1 more source

Architecture choices for high-temperature synchronous machines

open access: yesOpen Physics, 2020
The article proposes an analysis of the possible architectures of synchronous machines with an ability to operate at high temperatures of over 200°C in their environment.
Juszczak Ewa Napieralska   +4 more
doaj   +1 more source

Position-sensorless control of permanent-magnet-assisted synchronous reluctance motor [PDF]

open access: yes, 2003
The sensorless control of permanent-magnet-assisted synchronous reluctance (PMASR) motors is investigated, in order to conjugate the advantages of the sensorless control with full exploitation of the allowed operating area, for a given inverter.
Pastorelli, Michele Angelo   +12 more
core   +1 more source

Sensorless position control of permanent magnet motors with pulsating current injection and compensation of motor end-effects [PDF]

open access: yes, 2011
The sensorless position control of permanent-magnet motors is successfully implemented by superimposing a high-frequency voltage signal on the voltage reference or adding a high-frequency current signal to the current reference.
G Pellegrino   +14 more
core   +1 more source

Optimal Design Solutions for Permanent Magnet Synchronous Machines

open access: yesAdvances in Electrical and Computer Engineering, 2011
This paper presents optimal design solutions for reducing the cogging torque of permanent magnets synchronous machines. A first solution proposed in the paper consists in using closed stator slots that determines a nearly isotropic magnetic structure ...
POPESCU, M., TUDORACHE, T.
doaj   +1 more source

The Temperature Prediction of Permanent Magnet Synchronous Machines Based on Proximal Policy Optimization

open access: yesInformation, 2020
Accurate temperature prediction plays an important role in the thermal protection of permanent magnet synchronous motors. A temperature prediction method of permanent magnet synchronous machines (PMSMs) based on proximal policy optimization is proposed ...
Yuefeng Cen   +4 more
doaj   +1 more source

Position estimation delays in signal injection-based sensorless PMSM drives [PDF]

open access: yes, 2012
The causes of position estimation delays and their effects on the sensorless control of permanent magnet synchronous motor drives are investigated. The position of a permanent magnet synchronous machine is estimated via the injection of high frequency ...
A. Altomare   +9 more
core   +1 more source

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