The open-switch fault of three-phase voltage source rectifiers (VSR) may lead to ac current distortion. In the past decade. some current-based fault diagnosis methods have been proposed. which directly used the phenomenon of current distortion but lacked a detailed analysis of the cause of it. https://www.roneverhart.com/Burl-Audio-B2-Bomber-ADC-2-channel-AD-Converter-p17722/