Patent ID: 11927639
Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Field: Transport (Mechanical engineering)
Classification: CPC B  G  Y | IPC B  G

Claim 17:
18. The fault detection method of claim 17, wherein the first driving signal and the second driving signal are both pulse signals, and determining, by the fault detection module, the fault of the high-voltage component under detection according to the first detection signal comprises:
determining, by the fault detection module, that the short power supply fault occurs in the high-voltage component under detection, under a condition that a second short power supply determination condition is met, wherein the second short power supply determination condition comprises at least one of following sub-conditions: a high-level voltage of the first detection signal is equal to a first reference short power supply voltage, a low-level voltage of the first detection signal is equal to a second reference short power supply voltage, and the third detection signal is always a low-level signal and the fourth detection signal is always a high-level signal;
determining, by the fault detection module, that the open-circuit fault occurs in the high-voltage component under detection, under a condition that a second open-circuit determination condition is met, wherein the second open-circuit determination condition comprises at least one of following sub-conditions: the high-level voltage of the first detection signal is equal to a first reference open-circuit voltage, the low-level voltage of the first detection signal is equal to a second reference open-circuit voltage, and both the third detection signal and the fourth detection signal are always low-level signals;
determining, by the fault detection module, that the short-ground fault occurs in the high-voltage component under detection, under a condition that a second short-ground determination condition is met, wherein the second short-ground determination condition comprises at least one of following sub-conditions: the high-level voltage of the first detection signal is equal to a first reference short-ground voltage, the low-level voltage of the first detection signal is equal to a second reference short-ground voltage, the third detection signal comprises a high-level signal and a low-level signal and the fourth detection signal is a low-level signal.