三相正弦波逆变器容错控制  

Fault Tolerant Control of Three-Phase Sine Wave Inverter

作　　者：洪雪梅[1] 金福江[1] 李扬森[1] 李平[1] 

机构地区：[1]华侨大学信息科学与工程学院,福建厦门361021

出　　处：《华侨大学学报（自然科学版）》2016年第4期497-502,共6页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学基金资助项目(61273069);中央高校基本科研业务费资助项目(JB-ZR1204)

摘　　要：针对变频器逆变模块故障率高的问题,建立三相正弦波脉宽调制(SPWM)逆变模块中的绝缘栅双极型晶体管(IGBT)发生短路故障后逆变模块的数学模型.根据这个故障模型,实现对系统故障的有效诊断,同时结合硬件冗余的容错控制策略对电路拓扑进行重构,使得三相逆变器在短路故障情况下仍能正常工作,从而提高系统硬件层的容错能力和可靠性.在MATLAB/Simulink环境下实施系统仿真,验证了三相正弦波逆变器容错控制的有效性和可行性.Regard to the high failure rate of inverter module for the inverter,the mathematical model of the inverter module has been established after the short-circuit fault of the IGBT was occurred in the three-phase SPWM inverter module.Based on the fault model,the effective diagnosis of system failure was achieved,sim-ultaneously the circuit topology was restructured by hardware redundancy in the proposed fault-tolerant control strategy,so that the three-phase inverter still worked well when short-circuit was occurred and the fault toler-ance and reliability of the system hardware layer was improved .Based on the MATLAB/Simulink circum-stance,the result of system simulation demonstrated the effectiveness and feasibility of fault-tolerant control for the three-phase sine-wave inverter.

关 键 词：三相正弦波逆变器 绝缘栅双极型晶体管 短路故障 容错控制 硬件冗余 

分 类 号：TM273[一般工业技术—材料科学与工程]