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Sideband Vibro-acoustics Suppression and Loss Analysis Based on Discontinuous Pulse-width Modulation Strategy in Permanent Magnet Synchronous Motor
Technical Paper
2022-01-7045
ISSN: 0148-7191, e-ISSN: 2688-3627
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Language:
English
Abstract
This paper proposes a hybrid carrier spread spectrum modulation (HCSM) technique
based on dynamically adjusting the spatial zero-vectors action time to suppress
the sideband vibro-acoustic responses introduced by the discontinuous
pulse-width modulation (DPWM) in permanent magnet synchronous motor (PMSM) for
electric vehicles (EVs). Firstly, the space vector principle of DPWM is
presented, and the relationship between current harmonics and space zero-vectors
is analyzed. Then, the HCSM technique is proposed to suppress the current
harmonics and vibro-acoustic responses based on the variation trend of
zero-vectors action time in six sectors, and the suppression effect of HCSM on
sideband components is predicted by the finite element method. Finally, with a
12-slots/10-poles prototype PMSM, the sideband vibro-acoustic responses and the
electric drive system loss caused by DPWM and classical space vector pulse-width
modulation (SVPWM) before and after using HCSM are analyzed. The results show
that the HCSM method can effectively suppress the sideband vibro-acoustic
responses caused by the DPWM strategy, and has no obvious effect on the loss of
the electric drive system.
Authors
Citation
Zhang, L., Chen, Y., Cheng, H., Wu, Y. et al., "Sideband Vibro-acoustics Suppression and Loss Analysis Based on Discontinuous Pulse-width Modulation Strategy in Permanent Magnet Synchronous Motor," SAE Technical Paper 2022-01-7045, 2022, https://doi.org/10.4271/2022-01-7045.Also In
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