PWM Harmonic Cancellation of Permanent Magnet Synchronous Motor Based on Periodic Spread Spectrum Modulation

Aiming at the problem of harmonic energy aggregation under the traditional space vector pulse width modulation (SVPWM) technique, a periodic pulse width modulation technique with a variable switching frequency band is proposed in the present study. PWM harmonic dispersion and suppression are achieve...

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Bibliographic Details
Published in:Journal of electrical engineering & technology 2024, 19(4), , pp.2413-2423
Main Authors: Liu, Jia-Kang, Yao, Xiao-Dong, Liu, Hai-Long
Format: Article
Language:English
Subjects:
Electrical Engineering
Electrical Machines and Networks
Electronics and Microelectronics
Engineering
Instrumentation
Original Article
Power Electronics
전기공학
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Summary:Aiming at the problem of harmonic energy aggregation under the traditional space vector pulse width modulation (SVPWM) technique, a periodic pulse width modulation technique with a variable switching frequency band is proposed in the present study. PWM harmonic dispersion and suppression are achieved by periodizing the carrier frequency of two typical function signals. Then, the analytical model of periodic spread spectrum PWM technology is built to realize the dynamic adjustment of the random switching band. Based on the modulation theory, we analyze the inner mechanism of spread-spectrum modulation from the frequency domain perspective, revealing the relationship between bandwidth and PWM harmonic suppression effect. The harmonic suppression effects under different kinds of modulation functions and different spreading widths are compared by simulation and experiment, and the simulation and experimental results verify the effectiveness of the technique. It provides a reference for studying harmonic suppression of power converters by period spread spectrum PWM technology.
ISSN:1975-0102
2093-7423
DOI:10.1007/s42835-023-01731-5