Study of An Improved Biased Flux Intermodular Permanent Magnet Motor
A new published paper in IEEE Transactions on Transportation Electrification Authors: Mohammad Amirkhani; Ehsan Farmahini Farahani; Mojtaba Mirsalim Abstract: This paper proposes an improved biased-flux motor in which the permanent magnets (PMs) are placed between the stator modules, therefore called intermodular PM (IMPM) motor. The proposed structure has increased the torque density while maintaining a low torque ripple. Moreover, due to the specific placement of PMs, the PMs are extensively protected from demagnetization. The operation principle of the proposed IMPM motor is thoroughly discussed using flux modulation theory and is comparatively analysed with other biased-flux structures. Based on this analysis, a new theoretical formulation is also drawn to calculate the power factor, which involves design related parameters. It has been studied that since the PMs are far from armature winding in the…