Computation of 3D electromagnetic field and torques in spherical motors

Abstract

A spherical motor is a novel electromechanical device that has obtained worldwide attention for its attractive advantages. A general analysis of electromagnetic torque in double excited spherical motor has been completed on the calculation of its 3D electromagnetic field distributions. The analysis accounts for the effect of open‐end region in the stator. Double scalar magnetic potentials method has been used in the FEM numerical analysis. On the computation results, the other electromagnetic parameters can be calculated, which will be very significant in the design and performance prediction of the spherical motor. The calculation results indicate that the device is capable of continuous speed control and efficient torque production.

Citation

Ruan, J., Huang, S. and Zhou, K. (1998), "Computation of 3D electromagnetic field and torques in spherical motors", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 17 No. 1, pp. 106-110. https://doi.org/10.1108/03321649810203026