基于端电压检测的无刷直流电机单管开路故障研究  

Study of Single-Switch Open-circuit Fault in Brushless DC Motor by Detecting Output Voltage

作　　者：贺虎成[1] 王永宾[1] 张玉峰[1] 周奇勋[1] 

机构地区：[1]西安科技大学电气与控制工程学院,西安710054

出　　处：《微电机》2014年第12期66-70,共5页Micromotors

基　　金：国家自然科学基金资助项目(51307137)

摘　　要：故障诊断是实现容错控制的基础,为进一步提高逆变器单管开路故障诊断和定位的可靠性,提出了通过检测逆变器输出端电压实现单管开路故障的识别与定位的方法。通过分析逆变器在正常工作和开路故障两种状态下工作相逆变器的端电压,综合换相信号和PWM控制信号,采用简单的逆变器输出端电压检测方法实现了单管开路故障的识别与定位。仿真结果表明该方法能够快速有效地诊断和定位逆变器的单管开路故障。Fault diagnosis is the basis for the realization of fault-tolerant control. To improve the reliability of fault diagnosis and location in inverter, a novel fault diagnosis and location method for single-switch open- circuit was proposed by detecting the inverter output voltage. Through synthesis of the inverter output voltage in normal work condition and open-circuit fault, commutation signals and PWM control signals, single-switch open-circuit fault in inverter was detected and recognized. Simulation results show that the proposed method can quickly and effectively diagnosis and localize single-switch open-circuit fault.

关 键 词：端电压 故障诊断 故障定位 PWM控制 无刷直流电机 

分 类 号：TM464[电气工程—电器] TM361