Distinction Direction of Flux for PMs Used to Analyze Slotless Linear Motors with Buried PMs with Considering Finite Iron Core for HEVs Usages

The purpose of this paperisto present a mathematical model of the magnetic field distribution in planar linear buried permanent-magnet (PM) synchronous motors. The suggested strategy is based on 2D and can be utilized in any slotless linear buried PM machine that has any number of phases, remarkable advantage of buried PMs is high-speed capability due to planar force of zero at motion also, no need of epoxy resin glue to hold despite surface mounted linear PMSMs. The motor uses PDEs for seven regions to formulate its partial differential equations (PDEs): mover-side exterior, mover back iron, PMs, air-gap, winding, stator back-iron and stator-side exterior. Four different magnetization patterns, i.e. parallel, ideal Halbach, 2-segment Halbach and bar magnets in shifting directions magnetization patterns are considered to calculate the tangential and normal components of the open-circuit magnetic flux density, and armature response of the motor below the examination. The winding brings on voltage, flux linkage, self- and mutual inductances, and standard and tangential components of force are computed. The validity of the proposed method is shown by comparing the analytical results with those obtained from 2D finite-element analysis.