Abstract
In order to provide a complete solution for designing and analyzing the axial flux permanent magnet synchronous motor (AFPMSM) for electric vehicles, this paper covers the electromagnetic design and multi-physics analysis technology of AFPMSM in depth. Firstly, an electromagnetic evaluation method based on an analytical algorithm for efficient evaluation of AFPMSM was studied. The simulation results were compared with the 3D electromagnetic field simulation results to verify the correctness of the analytical algorithm. Secondly, the stator core was used to open the auxiliary slot to optimize the torque ripple of the AFPMSM, which reduced the torque ripple peak-to-peak value by 2%. From the perspective of ensuring the reliability, safety, and driving comfort of the traction motor in-vehicle working conditions, multi-physics analysis software was used to analyze and check the vibration and noise characteristics and temperature rise of several key operating conditions of the automotive AFPMSM. The analysis results showed that the motor designed in this paper can operate reliably.
Highlights
Drive motors used in new energy vehicles require frequent start-ups and shutdowns, are subject to large accelerations or decelerations, and require high-speed, low-torque mode operation
This paper focuses on the design and optimization of the axial flux permanent magnet synchronous motors (AFPMSM) for electric vehicles
The torque ripple of the auxiliary slot method is reduced by about 4%, so the torque ripple optimization method of the auxiliary slot can effectively attenuate the load torque ripple under constant power conditions
Summary
Drive motors used in new energy vehicles require frequent start-ups and shutdowns, are subject to large accelerations or decelerations, and require high-speed, low-torque mode operation. A surrogate assisted multi-objective optimization algorithm was applied to significantly reduce function calls, effectively reducing motor design time [9]. AFPMSM electric magnet synchronous motors, an analysis model based on Maxwell’s equation magneticfor equivalent vehicles hasintroduced a complicated andalgorithm the use ofcan. AFPMSM, its structure is complex, and the analytical algorithm can effectively reduce designing the motor. The AFPMSM for electric vehicles has a complicated structure, and the usethe of development time in motor design.time. The authors of Reference [12,13] to optimized ripple the control and torque output quality It is necessary analyze the andtorque optimize its from the control method. In and design of aofdual-stator-single-rotor structure of the the new energy vehicle traction
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