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Optimization of Interior Permanent Magnet Machine Embedded with Ferrite Magnets by Varying Air-gap and Width of Permanent Magnets

This paper proposes the optimized design of an interior permanent magnet synchronous machine (IPMSMs) using widely used low-priced ferrite magnets. Four types of IPMSM analyzed in this paper which has been named with different tags according to changing air gap length and width of permanent magnets (PM) of the machine. The analysis simply shows how efficiency and performances of IPMSM changes by varying the air-gap length and width of PM. I-shaped PM was considered in this thesis. To analyze the efficiency and torque ripple, Finite Element Analysis (FEA) was used and simulation done by Lua scripting which is compatible in the MATLAB environment.