电气传动2018，Vol.48Issue(1)：76-80,5.DOI:10.19457/j.1001-2095.20180115
PWM整流器主回路开关器件故障诊断
Fault Diagnosis of Main Circuit Switching Device in PWM Rectifier
顾马荣 1沈佳 2龚立锋 1丁丽萍 1李悦1
作者信息
- 1. 国网张家港市供电公司,江苏 苏州 215600
- 2. 中国矿业大学电动学院,江苏 徐州 221008
- 折叠
摘要
Abstract
A new solution to locate the open circuit fault of switching device IGBT and diode in the main circuit of PWM rectifier was proposed. It was analyzed that part of the current waveform will change or miss,when the single IGBT and diode open circuit fault occured. So it could be concluded that the power corresponding to the positive and negative current of one phase would be reduced,when IGBT and diode open circuit fault occured in this phase. C mx ,the normalized value of power corresponding to the positive and negative current of each phase was used to locate the fault phase. Then,dxn ,1/4 cycle power difference of the fault phase current,was utilized to make a distinction between the IGBT fault and the diode fault.The simulation proves that it is highly reliable and load independent except in the light load condition. Besides,it can be also adopted in part of the condition where two IGBTs or diodes open circuit occur.关键词
PWM整流器/IGBT开路/二极管开路/正负半波功率/1/4周期功率差Key words
pulse-width modulation rectifier/insulated gate bipolar translator open circuit/diode open circuit/power corresponding to the positive and negative current/1/4 cycle power difference分类
信息技术与安全科学引用本文复制引用
顾马荣,沈佳,龚立锋,丁丽萍,李悦..PWM整流器主回路开关器件故障诊断[J].电气传动,2018,48(1):76-80,5.
