Open AccessSliding mode‐based velocity and torque controllers for permanent magnet synchronous motor drives system
Author(s) -
Zhao Kaihui,
Yin Tonghuan,
Zhang Changfan,
Li Xiangfei,
Chen Yue,
Li Tao,
He Jing
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.9065
Subject(s) - permanent magnet synchronous motor , control theory (sociology) , torque motor , torque , direct torque control , mode (computer interface) , magnet , synchronous motor , computer science , physics , engineering , electrical engineering , voltage , induction motor , control (management) , artificial intelligence , thermodynamics , operating system
To minimise the torque ripple for vector control of interior permanent magnet synchronous motor (IPMSM) of railway traction system, this study proposes a new velocity, torque and current three‐loop control system, and designs a velocity and torque sliding mode controller (SMC) for permanent magnet synchronous motor (PMSM) driven system. First, the mathematical model of IPMSM is described and the new velocity and torque closed‐loop control system for PMSM is designed. Second, the velocity SMC and torque SMC are designed. The fast convergence of the motor velocity and torque is realised, and the torque ripple is reduced effectively. The stability of the designed SMC is analysed. Finally, the effectiveness of the proposed scheme was compared with PI by simulations and experiments. The results show that the proposed method has good control performance and strong robustness.