Design and control of high-capacity and low-speed doubly fed start-up permanent magnet synchronous motor

A novel rotor structure with a set of compensation winding for line-start permanent magnet synchronous motors for high capacity and low speed, which can meet the requirements of a ball mill with a high moment of inertia, is proposed to improve the motor-starting performance. A control strategy for t...

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Bibliographic Details
Published in:IET electric power applications 2018-11, Vol.12 (9), p.1350-1356
Main Authors: Gao, Xinmai, Wang, Xuefan, Wei, Zhongcao
Format: Article
Language:English
Subjects:
15 times rotor inertia
compensation current
control method
control strategy
finite element analysis
high capacity
high‐inertia load
line‐start permanent magnet synchronous motors
low speed
low‐speed doubly fed start‐up permanent magnet synchronous motor
motor‐starting performance
permanent magnet motor
permanent magnet motors
Research Article
rotors
synchronous motors
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Summary:A novel rotor structure with a set of compensation winding for line-start permanent magnet synchronous motors for high capacity and low speed, which can meet the requirements of a ball mill with a high moment of inertia, is proposed to improve the motor-starting performance. A control strategy for the compensation winding current is implemented to increase the synchronisation ability with a high-inertia load. The compensation current and its control method are analysed using a mathematical model and verified using a time-step finite-element analysis. The simulation shows that the permanent magnet motor proposed in this study can successfully start at a load of 15 times rotor inertia.
ISSN:1751-8660
1751-8679
1751-8679
DOI:10.1049/iet-epa.2018.5093