Results 71 to 80 of about 27,096 (210)

Simulation of the Circulating Bearing Currents for Different Stator Designs of Electric Traction Machines

open access: yesMachines, 2023
Pulse–width modulated inverters are commonly used to control electrical drives, generating a common mode voltage and current with high–frequency components that excite the parasitic capacitances within electric machines, such as permanent magnet ...
Yusa Tombul   +2 more
doaj   +1 more source

Calculation of equivalent circuit parameters with finite element method for electrical machine [PDF]

open access: yes, 2011
Tato práce slouží k seznámení s konstrukcí a matematickým modelem synchronního stroje s permanentními magnety. Cílem je vytvořit model synchronního motoru s permanentními magnety v programu FEMM, který vyhodnocuje úlohy pomocí metody konečných prvků, a ...
Michaliczek, Jan
core  

Torque prediction using the flux-MMF diagram in AC, DC, and reluctance motors [PDF]

open access: yes, 1996
This paper uses the flux-MMF diagram to compare and contrast the torque production mechanism in seven common types of electric motor. The flux-MMF diagram is a generalized version of the flux-linkage versus current (ψ-i) diagram for switched-reluctance ...
Deodhar, R.P.   +3 more
core   +1 more source

Investigations on the performances of the electrical generator of a rim-driven marine current turbine” [PDF]

open access: yes, 2014
In this paper, the electrical generator of a rim-driven horizontal-axis current turbine is modeled in detail. Its main characteristics and performances are evaluated (efficiency, mass, cost, etc).
CHARPENTIER, Jean-Frederic   +3 more
core   +1 more source

Detection of partial demagnetization fault in PMSMs operating under nonstationary conditions [PDF]

open access: yes, 2016
Demagnetization fault detection of in-service permanent magnet synchronous machines (PMSMs) is a challenging task, because most PMSMs operate under nonstationary circumstances in industrial applications.
Blaabjerg, Frede   +5 more
core   +3 more sources

Online optimal flux-weakening control of permanent-magnet brushless AC drives [PDF]

open access: yes, 2000
An enhanced online optimal control strategy, which maximizes the flux-weakening performance of a brushless AC motor, is described, and applied to motors having different rotor topologies: interior (radial or circumferential), inset, and surface-mounted ...
Chen, Y.S., Howe, D., Zhu, Z.Q.
core   +1 more source

Analysis of Current Signals in a Partially Demagnetized Vector Controlled Interior Permanent Magnet Generator

open access: yesPower Electronics and Drives, 2019
This manuscript analyzes the operation of an interior permanent magnet (IPM) machine working as a permanent magnet synchronous generator (PMSG). The partial demagnetization operation is analyzed.
Quintal-Palomo Roberto Eduardo
doaj   +1 more source

Electromagnetic Characteristic Analysis of Permanent Magnet Synchronous Machine Considering Current Waveform According to Static Rotor Eccentricity

open access: yesApplied Sciences, 2020
In this study, we performed an electromagnetic characteristic analysis of a permanent magnet synchronous machine considering the current waveform based on static rotor eccentricity. First, the characteristics of the back electromotive force were analyzed
Hoon Ki Lee   +4 more
doaj   +1 more source

Impact of the motor magnetic model on direct flux vector control of interior PM motors [PDF]

open access: yes, 2011
The stator-field-oriented, direct-flux vector control has been proven to be effective in terms of linear torque control and model independent performance at limited voltage and current (i.e. in flux weakening) for AC drives of various types.
Bojoi, R.   +2 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

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