Journal ArticleDOI
Influence of Parallel Paths on Current-Regulated Sine-Wave Interior-Permanent-Magnet Machines With Rotor Eccentricity
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In this paper, the behavior of rotor eccentricities in current-regulated interior-permanent magnet machines is investigated and the effect of stator-winding parallel paths is examined for both cases.Abstract:
The behavior of rotor eccentricities in current-regulated interior-permanent-magnet machines is investigated The study focuses on two typical topologies of significant industrial relevance: machines with distributed windings with two slots per pole and phase and motors with concentrated coils and three slots per pole pair The effect of stator-winding parallel paths is examined for both cases Coil and terminal electrical quantities and radial forces were simulated using finite-element analysis Unbalanced operation, where the currents are not equal in parallel phase connections due to eccentricity, is also investigated Experimental measurements of electrical quantities and forces on motors with static eccentricity are carried out using two special test setups The experimental measurements validated the simulation resultsread more
Citations
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Journal ArticleDOI
Noise and vibration suppression in hybrid electric vehicles: State of the art and challenges
TL;DR: A compact state-of-the-art review of both NVH characteristics and relevant suppression methods for HEVs that can provide both substantially improved ride-comfort and reduced energy-consumption is provided.
Journal ArticleDOI
Fault Diagnosis Techniques for Permanent Magnet AC Machine and Drives—A Review of Current State of the Art
Seungdeog Choi,Moinul Shahidul Haque,Tawhid Bin Tarek,Vamsi Mulpuri,Yao Duan,Sanjoy Das,Vijay K. Garg,Dan M. Ionel,M. Abul Masrur,Behrooz Mirafzal,Hamid A. Toliyat +10 more
TL;DR: Issues related to common abnormalities and specific faults in PM machines and drives, such as magnet damage and demagnetization, rotor eccentricity, unbalanced magnetic pull, open- and short-circuit windings, and switch faults are discussed.
Journal ArticleDOI
Damper Windings in Induction Machines for Reduction of Unbalanced Magnetic Pull and Bearing Wear
TL;DR: In this article, the use of stator damper windings to reduce the sideband flux waves and attenuate the unbalanced magnetic pull (UMP) was investigated in wind turbines.
Journal ArticleDOI
Rotor Eccentricity Effect on Cogging Torque of PM Generators for Small Wind Turbines
Min-Fu Hsieh,Yu-Han Yeh +1 more
TL;DR: In this paper, the effect of rotor eccentricity on cogging torque of a permanent magnet generator applied to small wind turbines is discussed, and the relationship between the starting torque provided by turbine blades and the cogging torque is also discussed.
Journal ArticleDOI
Measurement and Calculation of Unbalanced Magnetic Pull in Wound Rotor Induction Machine
David G. Dorrell,Obaid Kayani +1 more
TL;DR: The force calculation method and a method for splitting the UMP and torque are detailed and a new rig for measuring UMP is presented.
References
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BookDOI
Finite element analysis of electrical machines
TL;DR: The aim of this chapter is to clarify the role of magnetism in the design of Induction Machines and to provide a procedure for integrating magnetism into the model of the motor.
Journal ArticleDOI
Unbalanced magnetic forces in permanent magnet brushless machines with diametrically asymmetric phase windings
TL;DR: In this paper, a general analytical model was developed to predict the unbalanced magnetic force, which results in permanent-magnet brushless ac and dc machines having a diametrically asymmetric disposition of slots and phase windings.
Journal ArticleDOI
Calculation and measurement of unbalanced magnetic pull in cage induction motors with eccentric rotors. I. Analytical model
A.C. Smith,D.G. Dorrell +1 more
TL;DR: In this paper, an analytical model for cage induction motors with a static eccentric rotor is described, based on an airgap permeance approach including stator and rotor MMF harmonics.
Journal ArticleDOI
Magnetic field calculation in permanent magnet motors with rotor eccentricity: without slotting effect
TL;DR: In this paper, an analytical technique for predicting the instantaneous magnetic field distribution in the air gap region of permanent magnet motors with rotor eccentricity is developed, where the governing equations and associated boundary conditions are formulated and solved by a perturbation method.
Journal ArticleDOI
Magnetic field calculation in permanent magnet motors with rotor eccentricity: with slotting effect considered
TL;DR: In this paper, an analytical technique has been developed to predict the instantaneous magnetic field distribution in the air gap of a permanent magnet motor, where the effect of stator slotting and rotor eccentricity on the magnetic field has been considered.