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公开(公告)号：US11502507B2
公开(公告)日：2022-11-15
申请号：US16361929
申请日：2019-03-22
Applicant: Delta Electronics,Inc.
Inventor： Peng Xiao , Hongwei Xiao , Hongjian Gan , Jianping Ying
Abstract: A ground fault detection method for a power converter is provided, including: measuring, by a voltage sensor, a first voltage and a second voltage respectively, and converting the first voltage and the second voltage into a first digital voltage signal and a second digital voltage signal; receiving, by a controller, the first digital voltage signal and the second digital voltage signal, extracting a corresponding feature quantity of the first voltage and a corresponding feature quantity of the second voltage according to the first digital voltage signal and the second digital voltage signal; and further determining a type of the ground fault of the power converter and locating a ground fault; and when the power converter has a ground fault, shutting down the power converter.
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