Fault-tolerant stator flux oriented decoupling control for dual three-phase permanent magnet motor without diagnosis and reconfiguration

作     者：HUANG LinSen ZHAO WenXiang TAO Tao CUI Jia ZHANG Qiang 

作者机构：School of Electrical and Information EngineeringNational Center for International Research on Structural Health Management of Critical ComponentsJiangsu UniversityZhenjiang 212013China 

出 版 物：《Science China(Technological Sciences)》 (中国科学(技术科学英文版))

年 卷 期：2023年第66卷第11期

页      面：3206-3218页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.52025073 and 52107047) the Priority Academic Program Development of Jiangsu Higher Education Institutions。 

主　　题：dual three-phase motor stator flux orientation decoupling control fault-tolerant control open-phase fault 

摘      要：In this paper,the fault-tolerant capability of the existing stator-flux-oriented decoupling control(SFOC)for the DTP-PM motor is investigated,and a simple fault-tolerant SFOC is further designed to enhance fault tolerance.Firstly,the mathematical model of the DTP-PM motor in the stator-flux-oriented rotating coordinate system is analyzed.An SFOC is proposed to guarantee healthy operation performance,considering torque,flux linkage,and harmonic currents.Secondly,the coupling relationship under open-phase conditions is assessed.The assessed result shows that the coupling relationship between the harmonic and fundamental components results in conflicts and poor post-fault operation.Thirdly,the proposed SFOC includes an automatic deactivation module to detect conflicts with a variable threshold.The conflicted harmonic current controllers can be excluded automatically.Hence,fault-tolerant control can be remedied without diagnosing the specific fault scenario,and excellent faulttolerant capability can be achieved.Finally,experiments on a DTP-PM motor are carried out to verify the feasibility and effectiveness of the proposed strategy.