Fault-tolerant matrix-converter-controlled IPMSM-drive system using a predictive controller and sliding-mode estimator

The Journal of Engineering

Tian-Hua Liu¹  Shuo-Feng Chang¹ 

[1] National Taiwan University of Science and Technology;

关键词: matrix convertors;    stators;    rotors;    electric current control;    permanent magnet motors;    torque control;    predictive control;    digital signal processing chips;    synchronous motor drives;    variable structure systems;    fault tolerant control;    velocity control;    state estimation;    transient response;    fault-tolerant matrix-converter-controlled ipmsm-drive system;    sliding-mode estimator;    predictive speed-loop controller;    encoder fault;    hall-effect current sensor fault;    predictive current-loop controller;    dynamic responses;    transient responses;    load disturbance responses;    rotor position;    rotor speed;    stator currents;    state-estimating algorithm;    digital signal processor;   

DOI  :  10.1049/joe.2019.0084

来源: DOAJ

【 摘 要 】

This study proposes a fault-tolerant matrix-converter-controlled IPMSM-drive system, in which a predictive speed-loop controller and a predictive current-loop controller are implemented to improve its dynamic responses, including transient responses and load disturbance responses of the IPMSM-drive system in both normal and faulty conditions. In addition, a sliding-mode estimator is used to estimate the rotor position, rotor speed, and stator currents of the IPMSM when the encoder or current sensor in the IPMSM-drive system is faulty. As a result, the IPMSM-drive system allows for either an encoder fault or a Hall-effect sensor fault. The detailed fault detection, diagnosis, and control are discussed here. In case of an encoder fault or a Hall-effect current sensor fault, the IPMSM-drive system still functions. A digital signal processor, TMS 320LF2407A, is used as a control centre to execute the fault-tolerant algorithm, state-estimating algorithm, and control algorithm. Experimental results can validate the correctness and feasibility of the proposed fault-tolerant and predictive control methods.

【 授权许可】

Unknown