Results 21 to 30 of about 285 (175)

Reducing Rotor Temperature Rise in Concentrated Winding Motor by Using Magnetic Powder Mixed Resin Ring

open access: yesEnergies, 2020
The demand for high-speed servomotors is increasing, and minimal losses in both high-speed and high-torque regions are required. Copper loss reduction in permanent magnet motors can be achieved by configuring concentrated winding, but there are more ...
Mitsuhide Sato   +7 more
doaj   +1 more source

Synchronous reluctance machines with new type of fractional‐slot concentrated‐windings based on the concept of stator slot shifting

open access: yesIET Electric Power Applications, 2023
Fractional‐slot concentrated‐windings are appreciated for their simple construction, short end‐winding length, high copper fill factor, low cogging torque, good field‐weakening capability and fault‐tolerant ability.
Seyed Mahdiar Taghavi Araghi   +2 more
doaj   +1 more source

Loss characteristics investigation of FSCW-PMSM under SVPWM inverter supply

open access: yes电力工程技术, 2023
To investigate the effects of time-harmonic current introduced by inverter on loss characteristics of fractional-slot concentrated-winding permanent magnet synchronous machine (FSCW-PMSM), a method is proposed to analyze the harmonic characteristics of ...
CHEN Zhenfei   +4 more
doaj   +1 more source

Eccentricity fault detection in brushless doubly fed induction machines

open access: yesIET Electric Power Applications, 2021
A new fault diagnosis method for detecting the rotor eccentricity faults including static, dynamic and mixed eccentricity is proposed for brushless doubly‐fed induction machines (BDFIMs). BDFIMs are attractive alternatives for the conventional doubly‐fed
Mojtaba Afshar   +4 more
doaj   +1 more source

Performance Evaluation of Harmonic Reduced Non-Overlap Winding Wound Rotor Synchronous Machine

open access: yesEnergies, 2021
The analysis and performance evaluation of a harmonic reduction strategy of a non-overlap winding wound rotor synchronous machine is conducted in this paper.
Karen S. Garner   +2 more
doaj   +1 more source

Optimising the flux barriers of interior permanent magnet machine for noise reduction under certain load conditions

open access: yesIET Electric Power Applications, 2021
This study proposes a method to reduce the electromagnetic noise of a double‐layer interior permanent magnet synchronous motor (DIPMSM) by optimising the flux barrier.
Haorui Ge   +7 more
doaj   +1 more source

Solid Rotor Core vs. Lamination Rotor Core in Fractional-Slot PMSM Motor with High Power Density

open access: yesEnergies, 2022
Fractional-slot PMSM motors allow for obtaining high values of power density factors, but at the same time, they are characterized by high values of rotor losses—in the rotor core and permanent magnets.
Tomasz Wolnik, Tomasz Jarek
doaj   +1 more source

Experimental and Comparative Study of Rotor Vibrations of Permanent Magnet Machines with Two Different Fractional Pole/Slot Combinations

open access: yesApplied Sciences, 2020
This study deals with the noise, vibration, and harshness (NVH) characteristic analysis of permanent magnet synchronous motors (PMSMs) for electrical machines, such as electrically driven tools that are used in industries.
Tae-Kyoung Bang   +5 more
doaj   +1 more source

Electromagnetic Torque Fluctuating Properties under Dynamic RISC Fault in Turbogenerators

open access: yesEnergies, 2022
This paper analyzes the electromagnetic torque (EMT) fluctuation characteristics in synchronous generators under rotor interturn short-circuit (DRISC) fault.
Yuling He   +6 more
doaj   +1 more source

Selection of Rotor Geometry to Minimize the Contribution of Stator Slot Harmonics to the Torque Ripple of a SynRM Motor

open access: yesApplied Sciences
This article discusses the process of determining the shape and size of flux barriers in the rotor of a SynRM motor. This approach aims to reduce the contribution of stator slot harmonics to torque ripple.
Zbigniew Gmyrek
doaj   +1 more source

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