Results 211 to 220 of about 338,387 (269)
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IEEE Transactions on Transportation Electrification
Flux switching permanent magnet (FSPM) machine exhibits high-cogging torque due to the doubly salient topology and high air gap flux density. This article proposes a new axial-modular FSPM (AM-FSPM) machine, which has an improved torque capability and ...
P. Su +4 more
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Flux switching permanent magnet (FSPM) machine exhibits high-cogging torque due to the doubly salient topology and high air gap flux density. This article proposes a new axial-modular FSPM (AM-FSPM) machine, which has an improved torque capability and ...
P. Su +4 more
semanticscholar +1 more source
IEEE transactions on industrial electronics (1982. Print)
In this article, the surface-mounted permanent magnet machine is regarded as a salient pole reluctance machine to take into account the effect of stator teeth.
Jiawei Zhou +5 more
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In this article, the surface-mounted permanent magnet machine is regarded as a salient pole reluctance machine to take into account the effect of stator teeth.
Jiawei Zhou +5 more
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Magnetic gear: Radial force, cogging torque, skewing and optimization
2015 IEEE Energy Conversion Congress and Exposition (ECCE), 2015Magnetic gears are able to transmit torque between an input and an output shaft without mechanical contact. As for electrical drives, torque density, acoustic noise, and torque ripple are of primary concern. This paper describes the influence of the pole numbers on the radial forces and the cogging torques.
Gerald Jungmayr +4 more
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Cogging torque and torque ripple reduction of modular permanent magnet machines
2016 XXII International Conference on Electrical Machines (ICEM), 2016In order to minimize the cogging torque and torque ripple for surface mounted permanent magnet (SPM) machines, this paper proposes a C-core modular stator which can be obtained by inserting flux gaps (FGs) into every stator tooth. The electromagnetic performances of C-core modular PM machines such as open-circuit flux linkage, phase back-EMF, cogging ...
G. J. Li, B. Ren, Z. Q. Zhu
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IEEE transactions on magnetics
The high power density, high efficiency, and wide speed range of permanent magnet synchronous motors (PMSMs) are attractive features. However, the cogging torque and unsuppressed torque ripple of PMSMs degrade torque quality and reliability and cause ...
Yun-Jae Won +3 more
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The high power density, high efficiency, and wide speed range of permanent magnet synchronous motors (PMSMs) are attractive features. However, the cogging torque and unsuppressed torque ripple of PMSMs degrade torque quality and reliability and cause ...
Yun-Jae Won +3 more
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New Approach to Cogging Torque Simulation Using Numerical Functions
IEEE Transactions on Industry Applications, 2011The paper presents a new method for simulation of the cogging torque in a PM machine. The method benefits the numerical functions for modeling the magnetic system of the electrical machine. To compute the cogging torque by the numerical functions, it is necessary to model the permanent magnets and permeance of the machine.
SAIED, SEYEDAMIN +3 more
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Reduction of Cogging Torque in AFPM Machine Using Elliptical-Trapezoidal-Shaped Permanent Magnet
Applied Computational Electromagnetics Society, 2021─ The reduction in cogging torque enables smooth operation and an increase in the torque density of the machine. This research aims to minimize cogging torque in dual rotor single stator axial flux permanent magnet (AFPM) machine.
S. Ali +6 more
semanticscholar +1 more source
2005 European Conference on Power Electronics and Applications, 2005
In this paper the cogging torque of an existing permanent magnet DC motor must be increased. Thus motors are frequently used in motor vehicles. In order to hold a position the motor must be under current, because in most cases the cogging torque is too small to keep the motor in position.
J. Bacher, G. Maier
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In this paper the cogging torque of an existing permanent magnet DC motor must be increased. Thus motors are frequently used in motor vehicles. In order to hold a position the motor must be under current, because in most cases the cogging torque is too small to keep the motor in position.
J. Bacher, G. Maier
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IEEE transactions on industry applications
This paper investigates the interaction effects of permanent magnet (PM) tolerances and rotor eccentricities of 12-slot/10-pole PM machines by finite element method (FEM) and phasor analysis. It is found that the relative location between diversified PMs
Dong Xiang +5 more
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This paper investigates the interaction effects of permanent magnet (PM) tolerances and rotor eccentricities of 12-slot/10-pole PM machines by finite element method (FEM) and phasor analysis. It is found that the relative location between diversified PMs
Dong Xiang +5 more
semanticscholar +1 more source
Torque and cogging torque in sandwich type CD-ROM spindle motor
IEEE Transactions on Magnetics, 1998The sandwich type CD-ROM spindle motor has intrinsic dominance of manufacture and cost. This paper will propose a reference formula of torque constant Kt according to the experimental results, accounting for the mechanism of dead point, and finally introducing a design method to prevent dead point and to reduce the cogging torque.
C.M. Chao +4 more
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