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Magnetic Field Analysis in Shell-Like Spherical Induction Machines with Zenithal Traveling Waves

Machado, VMM ; Fernandes, J. Fernandes ; Branco, P. J.Costa Branco

IEEE Transactions on Energy Conversion Vol. 32, Nº 3, pp. 1081 - 1089, September, 2017.

ISSN (print): 0885-8969
ISSN (online):

Journal Impact Factor: 2,617 (in 2008)

Digital Object Identifier: 10.1109/TEC.2017.2696164

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In this paper a magnetic field analysis is done for
spherical Shell-like induction machines with a zenithal
progressive magnetic travelling wave, using an analytical model
in spherical coordinates. These analytical models have major
importance in the simulation, project and preliminary
optimization of devices due to its analytical solutions and physical
insight. The magnetic field analysis is made for a shell-like
induction machine for the study of its electromagnetic and
mechanical quantities, as the magnetic field, induced currents
and electromagnetic torque. The developed model is validated,
first with a set of generic windings distributions using the results
of a commercial Finite Element Analysis (FEA) tool and,
secondly, validated by comparing with the results from the shelllike
induction machine prototype. The results obtained from the
analytical model are very close to the ones obtained by the FEA
tool and from the prototype tests.