发明授权
- 专利标题： Power converter with ground fault detection function and fault detection method
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申请号： US16361929申请日： 2019-03-22
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公开(公告)号： US11502507B2公开(公告)日： 2022-11-15
- 发明人: Peng Xiao , Hongwei Xiao , Hongjian Gan , Jianping Ying
- 申请人： Delta Electronics,Inc.
- 申请人地址： CN Taoyuan
- 专利权人： Delta Electronics,Inc.
- 当前专利权人： Delta Electronics,Inc.
- 当前专利权人地址： CN Taoyuan
- 代理商 Qinghong Xu
- 优先权： CN201810301724.8 20180404
- 主分类号： H02H7/12
- IPC分类号： H02H7/12 ; H02H7/122 ; H02M1/32 ; H02M5/451
摘要：
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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