Open AccessComposite Decoupling Control of PMSM Based on Extended State Observer
Author(s) -
Hao Yan,
Yan Geng,
Weizhi Zhai
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2137/1/012003
Subject(s) - control theory (sociology) , decoupling (probability) , torque , voltage drop , state observer , internal model , computer science , voltage , permanent magnet synchronous motor , stator , composite number , control engineering , engineering , control (management) , physics , nonlinear system , mechanical engineering , electrical engineering , artificial intelligence , quantum mechanics , thermodynamics , algorithm
In order to solve the problem that the dynamic decoupling performance of the traditional decoupling method is reduced due to the parameter disturbance of permanent magnet synchronous motor (PMSM), a composite decoupling control method based on extended state observer (ESO) is proposed in this paper. In this method, voltage drop across stator resistance, cross coupling terms, internal uncertains and external load torque are taken as disturbances. The disturbance is observed in real time by using the extended state observer and compensated to the output end of the current controller, so as to realize the current decoupling control of the system and achieve the purpose of precise control of the current loop. The results of theoretical analysis show and simulation show that the composite decoupling control strategy based on extended state observer has better dynamic decoupling effect.