The invention provides vehicle ground fault detection. A vehicle power system includes a traction battery, a non-isolated power converter, a current sensor that measures phase current input to the non-isolated power converter during charging of the traction battery with grid power, and a controller. The controller interrupts an electrical connection between the traction battery and a source of thegrid power responsive to a magnitude of a 3rd harmonic component of the phase current exceeding a threshold value to prevent further charging of the traction battery.
本公开提供了“车辆接地故障检测”。一种车辆电力系统包括牵引电池、非隔离电力转换器、在用电网电力给所述牵引电池充电期间测量所述非隔离电力转换器的相电流输入的电流传感器和控制器。所述控制器响应于所述相电流的三次谐波分量的量值超过阈值来中断在所述牵引电池和电网电源之间的电连接以防止对所述牵引电池进一步充电。
Vehicle ground fault detection
车辆接地故障检测
2020-11-10
Patent
Elektronische Ressource
Chinesisch