Electromagnetic Force Analysis of Permanent Magnet Synchronous Motor

Permanent Magnet Synchronous Motor (PMSM) is a synchronous motor variant that relies on permanent magnets to produce the required magnetic field, eliminating the need for excitation current. Because of its high efficiency, high torque density, and ability to precisely control speed, it is frequently employed in a variety of applications. When calculating design motor, one of the parameters that must be taken into account is the electromagnetic force as it's the main reason for vibration of the motor. The loudness, harshness, and vibration of the motors are all decreased when the electromagnetic parameters are computed to minimize the radial electromagnetic force. The purpose of this paper is to evaluate how radial electromagnetic force affects the electromagnetic parameters of a 72-slot PMSM with 6, 8, and 12 poles which is utilized in electric cars. The radial force's spatial order and frequency order properties are examined in this work. The number of poles on the rotor dictates the harmonic amplitude of the electromagnetic force. This study will optimize vibration and acoustics by estimating the number and size of poles in the rotor, simulating the effect, assessing and enhancing the overall effectiveness of the optimization process.