Noise control of electrical vehicles

Abstract

Due to their very low to zero carbon emissions, low noise, great efficiency, and flexibility in grid operation and integration, Electric Vehicles (EVs) are a viable technology for establishing a sustainable transportation sector in the future. However, there are considerable obstacles to the widespread adoption of electric vehicles, including battery technology constraints, high purchasing costs, and a lack of recharging infrastructure, NVH problem for electric vehicle. The high frequency electromagnetic noise emitted from electric power train system could significantly affect the driving comfort and has become an important NVH problem of electric vehicles. One of the primary issues with electric vehicles is noise reduction, as noise range of electric motors is distinct from that of traditional ICEs, and human insight is considerably more vulnerable to it. In this work, taking IPMSM for electric vehicles Electromagnetic forces, for example, were investigated using an ANSYS work bench and a multiple physical field finite - element framework. The main cause of EM noise is the electromagnetism of the motor's stator teeth. We can optimize the slot structure of a rotor to To optimize a magnetic field of rotor, enhance EM vibrations of stators tooth and reduce the EM vibrations of motor. So, in this experiment, the electromagnetic noise of the stator is lowered by refining the design and changing the shape of the IPMSM rotor. We offer two distinct rotor structures for this purpose. By comparing and analysing the EM forces, acoustic field, and magnetic field of different structures, as well as comparing their outcomes before and after optimization, the most suited structure may be discovered.