Journal ArticleDOI
Core losses estimation in a multiple teeth per stator pole switched reluctance motor
TLDR
In this article, the authors present a suitable approach to loss prediction in a multiple-teeth-per-stator-pole switched reluctance motor based upon the conventional core losses equation and taking into account the complicated flux variations in the magnetic circuit.Abstract:
This paper presents a suitable approach to loss prediction in a multiple-teeth-per-stator-pole switched reluctance motor based upon the conventional core losses equation and taking into account the complicated flux variations in the magnetic circuit. Flux waveform in a part of the stator yoke is measured and used to predict the flux waveforms of the other parts of the magnetic circuit of the motor. These flux waveforms are then used to predict the core losses in the motor. Comparison between the predicted and measured values shows a 25.8% discrepancy. >read more
Citations
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Journal ArticleDOI
Core losses in motor laminations exposed to high frequency or nonsinusoidal excitation
L.T. Mthombeni,Pragasen Pillay +1 more
TL;DR: In this article, a comparison of the Epstein frame and toroid test results for annealed and unannealed steel was presented for core loss under nonsinusoidal supplies, and the combination of the improved loss separation algorithm and the form factor concept was found to yield results close to the measured losses under high frequency supplies such as pulse width modulated waveforms.
Journal ArticleDOI
Design of a New Enhanced Torque In-Wheel Switched Reluctance Motor With Divided Teeth for Electric Vehicles
TL;DR: A new switched reluctance motor with wide speed range for the application of electric vehicles with an in-wheel structure for direct drive and multiple teeth per stator pole to enhance output torque is presented.
Journal ArticleDOI
Temperature Rise Analysis of Switched Reluctance Motors Due to Electromagnetic Losses
TL;DR: In this article, a finite-element analysis of the temperature rise of switched reluctance motors (SRM) due to electromagnetic losses is presented, including core loss in the lamination as well as copper and eddy-current losses in windings.
Journal ArticleDOI
Lamination core losses in motors with nonsinusoidal excitation with particular reference to PWM and SRM excitation waveforms
T.L. Mthombeni,Pragasen Pillay +1 more
TL;DR: In this paper, the effects of varying the modulation index and the switching frequency on steel lamination core losses when excited with pulse width modulated waveforms are investigated, and a switched reluctance motor flux model is also developed and flux waveforms for different parts of the machine are synthesized.
Journal ArticleDOI
Design and Analysis of a New Enhanced Torque Hybrid Switched Reluctance Motor
TL;DR: Simulation and experimental results indicate that the proposed topology can achieve high torque density and high PM utilization factor simultaneously.
References
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Journal ArticleDOI
Variable-speed switched reluctance motors
TL;DR: In this article, the theory and potential of a family of doubly salient electronically-switched reluctance motors is explored. But the most recent prototype has achieved a continuous rating which is 1.4 times that of the equivalent induction motor.
Journal ArticleDOI
Computation of torque and current in doubly salient reluctance motors from nonlinear magnetisation data
J.M. Stephenson,J. Corda +1 more
TL;DR: A new method is presented for accurately calculating the torque and current of a variable-reluctance stepping motor from measured or computed flux-linkage/current/rotor position data that is more accurate and uses less input data than previously known procedures.
Journal ArticleDOI
Estimation of switched reluctance motor losses
P.N. Materu,R. Krishnan +1 more
TL;DR: In this article, a method of predicting switched reluctance motor (SRM) losses under operating conditions inclusive of saturation is described, where Fourier analysis is applied to decompose the flux waveforms into their constituent sinusoidal components, which are then combined with the loss characteristics of the core material to estimate the corresponding loss components.
Journal ArticleDOI
Determination of iron core losses under influence of third-harmonic flux component
TL;DR: In this paper, a method for predicting the position, size, and number of minor loops formed in the B-H loop, while harmonics of known magnitude and phase angle occur along with the fundamental under distorted excitation, is presented.