Open AccessControl strategy for dual three‐phase PMSM based on reduced order mathematical model under fault condition due to open phases
Author(s) -
Changpan Zhou,
Wei Tang,
Xiang dong Sun,
Zhaoji Zhou,
Guijie Yang,
Jianyong Su
Publication year - 2018
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.0061
Subject(s) - control theory (sociology) , stator , subspace topology , fault tolerance , fault (geology) , computer science , vector control , torque , dual (grammatical number) , phase (matter) , three phase , induction motor , control engineering , control (management) , engineering , physics , artificial intelligence , mechanical engineering , art , distributed computing , electrical engineering , literature , quantum mechanics , voltage , seismology , thermodynamics , geology
The high fault‐tolerance ability is one important application characteristic of multiphase motors. At present, researches on fault‐tolerant control of multiphase motors are focused on open‐phase faults. When an open‐phase fault occurs for the dual three‐phase machine, the α – β subspace and z 1– z 2 subspace currents are no longer decoupled, so the mathematical model with open phases should be set up. In this study, the mathematical model of the dual three‐phase permanent‐magnet synchronous motor (PMSM) with one open phase is set up by the vector space decomposition modelling method, and two optimal current control modes of minimum stator loss and maximum torque output are achieved by vector control strategy. The experimental results demonstrate the effectiveness and feasibility of the proposed strategy.