电源学报2024，Vol.22Issue(4)：292-300,9.DOI:10.13234/j.issn.2095-2805.2024.4.292
计及磁链和电流的PMSM DTC系统中功率器件键合线老化监测方法
Aging Monitoring Method for Power Device Bond Wires in PMSM DTC System Involving Flux Linkage and Current
摘要
Abstract
In a closed-loop control system,the aging monitoring method for power devices based on electrical parameters is one of the difficulties in the field of power electronics reliability.The direct torque control(DTC)system of a permanent magnet synchronous motor(PMSM)is taken as an example,and an on-line monitoring method for the aged state of power devices in a power inverter is studied based on the phase diagram of flux linkage and current.First,the aged characteristics of power devices are analyzed,and it is concluded that the on-state resistance will increase due to the aging of bond wires.Second,the relationship between power device bond wires aging and the phase diagram of flux linkage and the relationship between aging and direct axis current and three-phase current peak value are studied,and the aging monitoring methods are proposed accordingly.Finally,through several groups of simulation experiments,it is verified that both the monitoring method based on the phase diagram of flux linkage and the monitoring method based on current can realize on-line monitoring of the aged state of power device bond wires in the power inverter.The monitoring method based on the phase diagram of flux linkage is easy to observe when there are some fluctuations in the system flux,so it is not desirable considering that the power device has already been in a failure state at the same time.In compar-ison,the monitoring method based on three-phase current can more accurately monitor the aged state of power devices,and its effect is more advantageous.关键词
永磁同步电机/直接转矩控制/功率器件/键合线/老化监测/磁链相图1Key words
Permanent magnet synchronous motor(PMSM)/direct torque control(DTC)/power device/bond wire/aging monitoring/phase diagram of flux linkage分类
信息技术与安全科学引用本文复制引用
赵相睿,董超,姚婉荣,杜明星..计及磁链和电流的PMSM DTC系统中功率器件键合线老化监测方法[J].电源学报,2024,22(4):292-300,9.基金项目
天津市技术创新引导专项(基金)资助项目(20YDTPJC00510)This work is supported by Tianjin Special Project for Guiding Technological Innovation(Fund)under the grant 20YDTPJC00510 （基金）
