Design and Analysis of Interior Permanent Magnet Synchronous Machine /

Abstract

As the need for more compact and highly efficient electrical machines rises—particularly for Electric Vehicles (EVs)—new Interior Permanent Magnet Synchronous (IPMS) machine topologies are becoming more and more important. The AIPM-III, a novel topology that combines a spoke-type configuration with an inverted V-type asymmetric barrier, four poles, and twelve slots, is introduced in the present research. Concentrated winding techniques are incorporated throughout the design to significantly decrease copper losses and increase the machine's overall efficiency. The AIPM-III design is noteworthy for having a significantly lower stack length than typical designs—roughly 50% shorter—while keeping the permanent magnets' volume and material composition the same. This shorter stack length is especially useful for electric vehicle applications, where limitations on weight and space are paramount. By contrasting it with traditional topologies, namely the AIPM-I and AIPM-II models, this research offers an in-depth evaluation of the AIPM-III design. This comparison primarily focuses on torque density, a significant performance metric. Compared to the conventional designs, the AIPM-III exhibits several important advantages, including a notable increase in torque density, efficient attenuation of torque ripples, and significant cost savings. Simplified installation and maintenance procedures are made possible by the AIPM-III's weight decrease. A multi-objective genetic algorithm has been employed to optimize the AIPM-III design. This optimization procedure aims to achieve the best possible balance of performance measures by enhancing torque output and decreasing torque ripples. The AIPM-III's enhanced applicability and efficiency are a direct outcome of this alteration. When efficiency, copper losses, and iron losses are compared, the AIPM-III performs more effectively than conventional designs in these areas. With its improved torque density and xvi lower production costs, the AIPM-III design offers a highly efficient option for present EV applications. It is an appealing alternative in applications where operating performance and efficiency are crucial since it satisfies strict requirements for thermal control and weight constraints.