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Z. Zhu, D. Howe (1992)
Analytical prediction of the cogging torque in radial-field permanent magnet brushless motorsIEEE Transactions on Magnetics, 28
S. Salon, K. Sivasubramaniam, Tukenmez‐Ergene
An approach for determining the source of torque harmonics in brushless DC motors
N. Bianchi, S. Bolognani (2000)
Reducing Torque Ripple in PM Synchronous Motors by Pole Shifting
Presents an approach to determine sources of cogging torque harmonics in permanent magnet electrical machines on the basis of variations of air‐gap magnetic flux density with time and space. The magnetic flux density is determined from the two‐dimensional (2D) finite element model and decomposed into the double Fourier series through the 2D fast Fourier transform (FFT). The real trigonometric form of the Fourier series is used for the purpose to identify those space and time harmonics of magnetic flux density whose involvement in the cogging torque is the greatest relative contribution. Carries out calculations for a symmetric permanent magnet brushless machine for several rotor eccentricities and imbalances.
COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering – Emerald Publishing
Published: Sep 1, 2004
Keywords: Magnetic devices; Torque; Flux density; Fourier transforms
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