POWER CONVERTER AND DETECTION METHOD THEREOF
卷宗概要
申请人
Huawei Digital Power Technologies Co., Ltd.
发明人
Defeng Xin; Mingxiao Fu; Zheng Ma
IPC 分类
CPC 分类
A power converter and a detection method thereof. The power converter includes a power conversion circuit and a control circuit. Three branches are formed between three phase wires of the power conversion circuit and an N wire, and the three branches form current imbalance branches. When the control circuit determines that the differences are less than the specified threshold, it is considered that the N wire is normal. When the N wire is faulty, a voltage of the N wire deviates from a center point due to the current imbalance branches. Therefore, differences between every two of the three phase voltages are greater than a specified threshold. When the control circuit determines that a difference is greater than the specified threshold, it is considered that the N wire is abnormally connected, and an N-wire fault alarm signal is output.
原文（中文）
A power converter and a detection method thereof. The power converter includes a power conversion circuit and a control circuit. Three branches are formed between three phase wires of the power conversion circuit and an N wire, and the three branches form current imbalance branches. When the control circuit determines that the differences are less than the specified threshold, it is considered that the N wire is normal. When the N wire is faulty, a voltage of the N wire deviates from a center point due to the current imbalance branches. Therefore, differences between every two of the three phase voltages are greater than a specified threshold. When the control circuit determines that a difference is greater than the specified threshold, it is considered that the N wire is abnormally connected, and an N-wire fault alarm signal is output.