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Modelling, Calculation and Analysis of Electromagnetic Force and Vibroacoustic Behavior of Integer-Slot Permanent Magnet Synchronous Motor Considering Current Harmonics

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Abstract

Background and Purpose

The comfort of electric vehicles (EVs) is closely related to the vibroacoustic performance of integer-slot permanent magnet synchronous motors (ISPMSMs). This study provides a detailed investigation on the radial electromagnetic force and vibroacoustic behavior of ISPMSMs considering current harmonics.

Methods

First, the origin and order feature of dead-time current harmonics are introduced and validated through the phase current test. Subsequently, a theoretical model of radial force considering dead-time current harmonics is built, the spatial and temporal characteristics of radial force are analyzed and verified via the 2-D Fourier decomposition. Then, a multiphysics model including the control model, the electromagnetic model, the equivalent structural model, and the acoustic radiation model is established to calculate the vibration and noise of an ISPMSM used for EVs. Moreover, the orthotropic material parameters of the stator and the non-uniform distribution of the radial force are also taken into account. The accuracy of the multiphysics model is validated through the vibration and noise tests. Finally, the vibroacoustic mechanism of the ISPMSM is clarified based on the multiphysics model, the effect of dead-time current harmonics on the vibration and noise is also analyzed.

Conclusions

It is found that the 0-order and 2-order modal responses, which are commonly caused by the 0-order and slot-order radial forces, are the roots of vibration and noise in ISPMSMs. By changing the amplitudes of corresponding radial force harmonics, the dead-time current harmonics have a certain impact on the vibration and noise peaks, but the specific influence depends on their amplitudes and phase angles. This study provides guidance for the development of low-vibration and noise ISPMSMs.

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Acknowledgements

This work was supported by a Grant (Project 51875410) from the National Natural Science Foundation of China.

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Authors and Affiliations

  1. School of Automotive Studies, Tongji University, Shanghai, China

    Zhipeng Wu, Shuguang Zuo, Zhiyong Huang, Xiaorui Hu, Siyue Chen & Chang Liu

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  1. Zhipeng Wu
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  2. Shuguang Zuo
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  3. Zhiyong Huang
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  4. Xiaorui Hu
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  5. Siyue Chen
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  6. Chang Liu
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Correspondence to Shuguang Zuo.

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Wu, Z., Zuo, S., Huang, Z. et al. Modelling, Calculation and Analysis of Electromagnetic Force and Vibroacoustic Behavior of Integer-Slot Permanent Magnet Synchronous Motor Considering Current Harmonics. J. Vib. Eng. Technol. 10, 1135–1152 (2022). https://doi.org/10.1007/s42417-022-00434-x

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  • DOI: https://doi.org/10.1007/s42417-022-00434-x

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