Open AccessDesign and control of high‐capacity and low‐speed doubly fed start‐up permanent magnet synchronous motor
Author(s) -
Gao Xinmai,
Wang Xuefan,
Wei Zhongcao
Publication year - 2018
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
ISSN - 1751-8679
DOI - 10.1049/iet-epa.2018.5093
Subject(s) - control theory (sociology) , inertia , moment of inertia , magnet , rotor (electric) , synchronous motor , compensation (psychology) , finite element method , engineering , computer science , control (management) , mechanical engineering , physics , electrical engineering , structural engineering , psychology , classical mechanics , quantum mechanics , artificial intelligence , psychoanalysis
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.