Vibration noise suppression algorithm of permanent magnet synchronous motor for new energy vehicles Online publication date: Mon, 06-Jun-2022
by Zizhen Qiu; Yong Chen; Yuming Guan; Yang Kang
International Journal of Heavy Vehicle Systems (IJHVS), Vol. 29, No. 1, 2022
Abstract: Taking the permanent magnet synchronous motor (PMSM) for new energy vehicles as the research object, the causes and mechanisms of electromagnetic vibro-acoustics of fractional-slot PMSM are analysed and summarised. According to the analysis results, a novel control strategy-hysteresis current tracking technology is proposed to suppress the torque ripple and reduce electromagnetic noise. On the basis of the above, the band-stop filter method is introduced to quantitatively analyse the influence of controller parameters. The finite element method is used to study the relationship among the initial phase angle, frequency and amplitude of the electromagnetic force and the injected harmonic voltage of the stator. The analysis and experimental results show that the error rate curve of the proposed algorithm is closer to the curve without phase noise when the phase noise line width is small. The vibro-acoustics can be effectively reduced by injecting the corresponding harmonic voltage with the optimisation results.
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