Comparative Iron Loss Analysis of the Interior PMSMs for Electric Vehicles Considering the Effects of Temperature Variation

Accurately calculating iron loss in the extensively-used interior permanent magnet synchronous machines (IPMSMs) is challenging due to the effects of temperature variations, which can also be significant in automotive applications for optimizing efficiency. While the finite element method is a valuable tool for simulating and analyzing complex systems, including electric vehicle (EV) traction motors, it is essential to be aware of its limitations on computational cost and potential challenges when calculating iron loss in analyzing multi-physics effects. Therefore, this paper presents a comparative iron loss analysis between the improved analytical iron loss calculation model, finite element results, and experimental measurements of an IPMSM used in EVs, with a specific focus on considering the effects of temperature variation. By investigating the impact of temperature changes on iron loss by these obtained data, this study aims to provide valuable insights into validating the improved model’s accuracy, assessing its computational efficiency, and identifying potential areas for improvement.