Results 11 to 20 of about 5,684 (263)
IET Electric Power Applications, 2023 Different from the copper loss of general permanent magnet (PM) motors, the copper loss of ultra‐high‐speed permanent magnet motors (UHSPMSM) includes DC losses and eddy current losses, which lead to difficulty in analysis.
Qixing Gao +3 more
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FIELD ORIENTED CONTROL ( FOC) FOR BLDC MOTOR [PDF]
Fiabilitate şi Durabilitate, 2021 The advent of DC or AC motors has revolutionized the industry. Over time the engine characteristics have been improved but the existence of brushes is still the major disadvantage.
Florin GROFU
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Features of operation of ship electrical power systems with electrical propulsion systems
Известия высших учебных заведений: Проблемы энергетики, 2022 THE PURPOSE. Consider the issue of the presence of distortions in the form of sinusoidal voltage and current in autonomous electrical power systems with electrical propulsion systems, built on the principle of the unified electric power system.
A. E. Savenko, P. S. Savenko
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Energies, 2023 In some power systems, the voltage waveform contains frequency components less than fundamental, called subharmonics or subsynchronous interharmonics. Voltage subharmonics can be both positive- and negative-sequence, independent of their frequency (order)
Piotr Gnaciński +3 more
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Induction motor control through AC/DC/AC converters [PDF]
Proceedings of the 2010 American Control Conference, 2010 We are considering the problem of controlling inductions motors driven through AC/DC rectifiers and DC/AC inverters. The control objectives are threefold: (i) forcing the motor speed to track a reference signal, (ii) regulating the DC Link voltage, (iii) assuring a satisfactory power factor correction (PFC) with respect to the power supply net.
Abderrahim Elfadili +5 more
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Energies, 2023 In modern power systems, interharmonics have emerged as noninteger frequency components that appear in current or voltage signals. Double-stage AC-DC-AC converters have been identified as a primary source of interharmonics.
Alberto Gudiño-Ochoa +3 more
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Performance of halbach magnetized brushless ac motors [PDF]
IEEE Transactions on Magnetics, 2003 In this paper, an anisotropic bonded NdFeB Halbach magnetised ring magnet, which is oriented in powder alignment system during injection moulding and subsequently impulse magnetised, is employed. The features of such a Halbach magnetised machine, in terms of the airgap field distribution, and the back-emf and cogging torque waveforms, etc.
Zhu, Z.Q. +5 more
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High temperature machine: Characterization of materials for the electrical insulation
Open Physics, 2020 This paper aims to present and analyze the materials adapted to design a machine that can work with a high current density without any specific cooling system. In other words, the machine is equipped with material that supports high internal temperature,
Lecointe Jean-Philippe +4 more
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New trends in electric motors and selection for electric vehicle propulsion systems
IET Electrical Systems in Transportation, 2021 The increase in the numbers of electric vehicles (EVs) is seen as an upgrading of the existing vehicles for various reasons. This calls for an in‐depth analysis of the heart of these vehicles—the motor. A motor in an electric vehicle propulsion system is
Sreedhar Madichetty +2 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Survival after relapse in pediatric acute myeloid leukemia (AML) remains poor, highlighting the critical importance of identifying prognostic factors to guide optimal relapse management. Methods We investigated the prognostic impact of multiparameter flow cytometry (MFC) measurable residual disease (MRD) in 188 patients with first ...
Camilla Poulsen +21 more
wiley +1 more source