Order Feature Analysis of Torque Ripple in Permanent Magnet Synchronous Motor for Electric Vehicle

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Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (13) : 81-87.

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Order Feature Analysis of Torque Ripple in Permanent Magnet Synchronous Motor for Electric Vehicle

MA Cong-Gan1, ZUO Shu-Guang1,Yang De-Liang2, HE Lv-Chang1, MENG Shu1 SUN Qing1

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Abstract

for torque ripple of permanent magnet synchronous motor (PMSM) which causes the body structure vibration and noise in distributed drive electric vehicle, firstly, the dynamical and high order torque signals of PMSM are measured, whose order features are revealed and analyzed. Then, an analytical model of torque ripple in PMSM considering non-sinusoidal magnetic field distribution and slotting is built. Orders and frequencies of torque ripple are predicted and then the rotate speed criterion for the measurement of dynamical and high order torque signals is presented. Both test study and theoretical study show that torque of PMSM has a feature of order ripple and the main orders are the (h-1) th orders, the 2(h-1) th orders, the (6i+h-1) th orders and the (6i+h-1) th orders(h∈N; i∈N) . The hth order current causes the (h-1) th order and the 2(h-1) th order torque ripple. The hth order current, non-sinusoidal magnetic field distribution and slotting cause the (6i+h-1) th order and the (6i-h+1) th order torque ripple

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electric vehicle / permanent magnet synchronous motor / high order torque ripple / order analysis

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MA Cong-Gan;ZUO Shu-Guang;Yang De-Liang;HE Lv-Chang;MENG Shu SUN Qing. Order Feature Analysis of Torque Ripple in Permanent Magnet Synchronous Motor for Electric Vehicle[J]. Journal of Vibration and Shock, 2013, 32(13): 81-87