Research on Low Switching Frequency Modulation Strategy of High Power PMSM based on Metro Traction System

In recent years, permanent magnet synchronous motor (PMSM) has attracted extensive attention because of its high efficiency in the field of rail transit. According to the characteristics of the rail transit traction system, combined with the mathematical model of PMSM, central 60 degree modulation a...

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Bibliographic Details
Published in:	2021 IEEE 1st International Power Electronics and Application Symposium (PEAS) pp. 1 - 8
Main Authors:	Zhang, Ruifeng, Yin, Zhonggang, Liu, Jian, Yu, Senlin
Format:	Conference Proceeding
Language:	English
Published:	IEEE 13-11-2021
Subjects:	central 60 degree modulation Digital signal processing Frequency modulation hybrid modulation Modulation PMSM Rails SHEPWM Switches Switching frequency Torque
Online Access:	Get full text
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Summary:	In recent years, permanent magnet synchronous motor (PMSM) has attracted extensive attention because of its high efficiency in the field of rail transit. According to the characteristics of the rail transit traction system, combined with the mathematical model of PMSM, central 60 degree modulation and selective harmonic elimination PWM (SHEPWM) are analyzed theoretically. The strategy of harmonic current and torque harmonic characteristics were compared, the advantages and disadvantages of the SHEPWM 0-60°, SHEPWM 0-90° and central 60 degree modulation were analyzed. Finally, through experiment on a 180kW PMSM, the correctness of the theoretical analysis is verified.
DOI:	10.1109/PEAS53589.2021.9628436